| Oracle® Call Interface Programmer's Guide 11g Release 2 (11.2) Part Number E10646-08 |
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PDF · Mobi · ePub |
| Oracle® Call Interface Programmer's Guide 11g Release 2 (11.2) Part Number E10646-08 |
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PDF · Mobi · ePub |
Table 19-4 describes the OCI date and interval functions that are described in this section.
| Function | Purpose |
|---|---|
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Add or subtract days |
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Add or subtract months |
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|
Assign date |
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Check if the given date is valid |
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Compare dates |
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Get number of days between two dates |
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|
Convert string to date |
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|
Get the date portion of a date |
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|
Get the time portion of a date |
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|
Get date of last day of month |
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|
Get date of next day |
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|
Set the date portion of a date |
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Set the time portion of a date |
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|
Get the current system date and time |
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Perform a datetime assignment |
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|
Check if the given date is valid |
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|
Compare two datetime values |
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|
Construct a datetime descriptor |
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|
Convert one datetime type to another |
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|
Convert an array of size |
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|
Convert the given string to Oracle datetime type in the |
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Get the date (year, month, day) portion of a datetime value |
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Get the time (hour, min, second, fractional second) of a datetime value |
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Get the time zone name portion of a datetime value |
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Get the time zone (hour, minute) portion of a datetime value |
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Add an interval to a datetime to produce a resulting datetime |
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Subtract an interval from a datetime and store the result in a datetime |
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Take two datetimes as input and store their difference in an interval |
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Get the system current date and time as a time stamp with time zone |
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Convert an |
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Convert the given date to a string according to the specified format |
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|
Convert date to string |
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Convert date from one time zone to another zone |
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Add two intervals to produce a resulting interval |
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Copy one interval to another |
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Check the validity of an interval |
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Compare two intervals |
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Divide an interval by an Oracle |
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Convert an Oracle |
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When given an interval string, return the interval represented by the string |
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Return an |
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Get values of day, hour, minute, and second from an interval |
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Get year and month from an interval |
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Multiply an interval by an Oracle |
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Set day, hour, minute, and second in an interval |
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Set year and month in an interval |
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Subtract two intervals and stores the result in an interval |
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|
Convert an interval to an Oracle NUMBER |
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|
When given an interval, produce a string representing the interval |
Adds or subtracts days from a given date.
sword OCIDateAddDays ( OCIError *err,
const OCIDate *date,
sb4 num_days,
OCIDate *result );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
The given date from which to add or subtract.
Number of days to be added or subtracted. A negative value is subtracted.
Result of adding days to, or subtracting days from, date.
This function returns an error if an invalid date is passed to it.
OCIErrorGet(), OCIDateAddMonths()
Adds or subtracts months from a given date.
sword OCIDateAddMonths ( OCIError *err,
const OCIDate *date,
sb4 num_months,
OCIDate *result );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
The given date from which to add or subtract.
Number of months to be added or subtracted. A negative value is subtracted.
Result of adding days to, or subtracting days from, date.
If the input date is the last day of a month, then the appropriate adjustments are made to ensure that the output date is also the last day of the month. For example, Feb. 28 + 1 month = March 31, and November 30 – 3 months = August 31. Otherwise the result date has the same day component as date.
This function returns an error if an invalid date is passed to it.
OCIErrorGet(), OCIDateAddDays()
Performs a date assignment.
sword OCIDateAssign ( OCIError *err,
const OCIDate *from,
OCIDate *to );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Date to be assigned.
Target of assignment.
This function assigns a value from one OCIDate variable to another.
Checks if the given date is valid.
sword OCIDateCheck ( OCIError *err,
const OCIDate *date,
uword *valid );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Date to be checked.
Returns zero for a valid date; otherwise, it returns the logical operator OR combination of all error bits specified in Table 19-5.
Table 19-5 Error Bits Returned by the valid Parameter for OCIDateCheck()
| Macro Name | Bit Number | Error |
|---|---|---|
|
|
0x1 |
Bad day |
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|
0x2 |
Bad day low/high bit (1=low) |
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|
0x4 |
Bad month |
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|
0x8 |
Bad month low/high bit (1=low) |
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0x10 |
Bad year |
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0x20 |
Bad year low/high bit (1=low) |
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0x40 |
Bad hour |
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0x80 |
Bad hour low/high bit (1=low) |
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0x100 |
Bad minute |
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0x200 |
Bad minute low/high bit (1=low) |
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0x400 |
Bad second |
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0x800 |
Bad second low/high bit (1=low) |
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0x1000 |
Day is one of those missing from 1582 |
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0x2000 |
Year may not equal zero |
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0x8000 |
Bad date format input |
For example, if the date passed in was 2/0/1990 25:61:10 in (month/day/year hours:minutes:seconds format), the error returned is:
OCI_DATE_INVALID_DAY | OCI_DATE_DAY_BELOW_VALID | OCI_DATE_INVALID_HOUR | OCI_DATE_INVALID_MINUTE.
This function returns an error if date or valid pointer is NULL.
OCIErrorGet(), OCIDateCompare()
Compares two dates.
sword OCIDateCompare ( OCIError *err,
const OCIDate *date1,
const OCIDate *date2,
sword *result );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Dates to be compared.
Comparison result as listed in Table 19-6.
| Comparison Result | Output in result Parameter |
|---|---|
|
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-1 |
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0 |
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|
1 |
This function returns an error if an invalid date is passed to it.
Gets the number of days between two dates.
sword OCIDateDaysBetween ( OCIError *err,
const OCIDate *date1,
const OCIDate *date2,
sb4 *num_days );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Input date.
Input date.
Number of days between date1 and date2.
When the number of days between date1 and date2 is computed, the time is ignored.
This function returns an error if an invalid date is passed to it.
Converts a character string to a date type according to the specified format.
sword OCIDateFromText ( OCIError *err,
const OraText *date_str,
ub4 d_str_length,
const OraText *fmt,
ub1 fmt_length,
const OraText *lang_name,
ub4 lang_length,
OCIDate *date );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Input string to be converted to Oracle date.
Size of the input string. If the length is –1, then date_str is treated as a NULL-terminated string.
Conversion format. If fmt is a NULL pointer, then the string is expected to be in "DD-MON-YY" format.
Length of the fmt parameter.
Language in which the names and abbreviations of days and months are specified. If lang_name is a NULL string, (text *)0, then the default language of the session is used.
Length of the lang_name parameter.
Given string converted to date.
See the TO_DATE conversion function described in the Oracle Database SQL Language Reference for a description of format and multilingual arguments.
This function returns an error if it receives an invalid format, language, or input string.
OCIErrorGet(), OCIDateToText()
Gets the year, month, and day stored in an Oracle date.
void OCIDateGetDate ( const OCIDate *date,
sb2 *year,
ub1 *month,
ub1 *day );
Oracle date whose year, month, day data is retrieved.
Year value returned.
Month value returned.
Day value returned.
None.
OCIDateSetDate(), OCIDateGetTime()
Gets the time stored in an Oracle date.
void OCIDateGetTime ( const OCIDate *date,
ub1 *hour,
ub1 *min,
ub1 *sec );
Oracle date whose time data is retrieved.
Hour value returned.
Minute value returned.
Second value returned.
Returns the time information in the form: hour, minute and seconds.
OCIDateSetTime(), OCIDateGetDate()
Gets the date of the last day of the month in a specified date.
sword OCIDateLastDay ( OCIError *err,
const OCIDate *date,
OCIDate *last_day );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Input date.
Last day of the month in date.
This function returns an error if an invalid date is passed to it.
OCIErrorGet(), OCIDateGetDate()
Gets the date of the next day of the week after a given date.
sword OCIDateNextDay ( OCIError *err,
const OCIDate *date,
const OraText *day,
ub4 day_length,
OCIDate *next_day );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Returned date should be later than this date.
First day of the week named by this is returned.
Length in bytes of string day.
First day of the week named by day that is later than date.
Returns the date of the first day of the week named by day that is later than date.
Example 19-3 shows how to get the date of the next Monday after April 18, 1996 (a Thursday).
Example 19-3 Getting the Date for a Specific Day After a Specified Date
OCIDate one_day, next_day;
/* Add code here to set one_day to be '18-APR-96' */
OCIDateNextDay(err, &one_day, "MONDAY", strlen("MONDAY"), &next_day);
OCIDateNextDay() returns "22-APR-96".
This function returns an error if an invalid date or day is passed to it.
OCIErrorGet(), OCIDateGetDate()
Set the values in an Oracle date.
void OCIDateSetDate ( OCIDate *date,
sb2 year,
ub1 month,
ub1 day );
Oracle date whose time data is set.
Year value to be set.
Month value to be set.
Day value to be set.
None.
Sets the time information in an Oracle date.
void OCIDateSetTime ( OCIDate *date,
ub1 hour,
ub1 min,
ub1 sec );
Oracle date whose time data is set.
Hour value to be set.
Minute value to be set.
Second value to be set.
None.
Gets the current system date and time of the client.
sword OCIDateSysDate ( OCIError *err,
OCIDate *sys_date );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Current system date and time of the client.
None.
Performs a datetime assignment.
sword OCIDateTimeAssign ( void *hndl,
OCIError *err,
const OCIDateTime *from,
OCIDateTime *to );
The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Source, right-hand side (rhs) datetime to be assigned.
Target, left-hand side (lhs) of assignment.
This function performs an assignment from the from datetime to the to datetime for any of the datetime types listed in the description of the type parameter.
The type of the output is the same as that of the input.
OCI_SUCCESS; or OCI_ERROR.
OCIDateTimeCheck(), OCIDateTimeConstruct()
Checks if the given date is valid.
sword OCIDateTimeCheck ( void *hndl,
OCIError *err,
const OCIDateTime *date,
ub4 *valid );
The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR, otherwise, the default is used.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
The date to be checked.
Returns zero for a valid date; otherwise, it returns the logical operator OR combination of all the error bits specified in Table 19-7.
Table 19-7 Error Bits Returned by the valid Parameter for OCIDateTimeCheck()
| Macro Name | Bit Number | Error |
|---|---|---|
|
|
0x1 |
Bad day |
|
|
0x2 |
Bad day low/high bit (1=low) |
|
|
0x4 |
Bad month |
|
|
0x8 |
Bad month low/high bit (1=low) |
|
|
0x10 |
Bad year |
|
|
0x20 |
Bad year low/high bit (1=low) |
|
|
0x40 |
Bad hour |
|
|
0x80 |
Bad hour low/high bit (1=low) |
|
|
0x100 |
Bad minute |
|
|
0x200 |
Bad minute low/high bit (1=low) |
|
|
0x400 |
Bad second |
|
|
0x800 |
Bad second low/high bit (1=low) |
|
|
0x1000 |
Day is one of those missing from 1582 |
|
|
0x2000 |
Year may not equal zero |
|
|
0x4000 |
Bad time zone |
|
|
0x8000 |
Bad date format input |
So, for example, if the date passed in was 2/0/1990 25:61:10 in (month/day/year hours:minutes:seconds format), the error returned is:
OCI_DT_INVALID_DAY | OCI_DT_DAY_BELOW_VALID |
OCI_DT_INVALID_HOUR | OCI_DT_INVALID_MINUTE.
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; OCI_ERROR, if date or valid is a NULL pointer.
Compares two datetime values.
sword OCIDateTimeCompare ( void *hndl,
OCIError *err,
const OCIDateTime *date1,
const OCIDateTime *date2,
sword *result );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Dates to be compared.
Comparison result as listed in Table 19-8.
Table 19-8 Comparison Results Returned by the result Parameter for OCIDateTimeCompare()
| Comparison Result | Output in result Parameter |
|---|---|
|
|
-1 |
|
|
0 |
|
|
1 |
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; OCI_ERROR, if an invalid date is used or if the input date arguments are not of mutually comparable types.
Constructs a datetime descriptor.
sword OCIDateTimeConstruct ( void *hndl,
OCIError *err,
OCIDateTime *datetime,
sb2 year,
ub1 month,
ub1 day,
ub1 hour,
ub1 min,
ub1 sec,
ub4 fsec,
OraText *timezone,
size_t timezone_length );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor.
Year value.
Month value.
Day value.
Hour value.
Minute value.
Second value.
Fractional second value.
Time zone string. A string representation of time zone displacement is the difference (in hours and minutes) between local time and UTC (Coordinated Universal Time—formerly Greenwich Mean Time) in the format "[+|-][HH:MM]". For example, "-08:00".
Length of the time zone string.
The type of the datetime is the type of the OCIDateTime descriptor. Only the relevant fields based on the type are used. For types with a time zone, the date and time fields are assumed to be in the local time of the specified time zone.
If the time zone is not specified, then the session default time zone is assumed.
OCI_SUCCESS; or OCI_ERROR, if datetime is not valid.
OCIDateTimeAssign(), OCIDateTimeConvert()
Converts one datetime type to another.
sword OCIDateTimeConvert ( void *hndl,
OCIError *err,
OCIDateTime *indate,
OCIDateTime *outdate );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
A pointer to the input date.
A pointer to the output datetime.
This function converts one datetime type to another. The result type is the type of the outdate descriptor. The session default time zone (ORA_SDTZ) is used when converting a datetime without a time zone to one with a time zone.
OCI_SUCCESS; OCI_INVALID_HANDLE if err is NULL; or OCI_ERROR, if the conversion is not possible with the given input values.
Converts an array containing a date to an OCIDateTime descriptor.
sword OCIDateTimeFromArray ( void *hndl,
OCIError *err,
const ub1 *inarray,
ub4 *len
ub1 type,
OCIDateTime *datetime,
const OCIInterval *reftz,
ub1 fsprec );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Array of ub1, containing the date.
Length of inarray.
Type of the resulting datetime. The array is converted to the specific SQLT type.
Pointer to an OCIDateTime descriptor.
Descriptor for OCIInterval used as a reference when converting a SQLT_TIMESTAMP_LTZ type.
Fractional second precision of the resulting datetime.
OCI_SUCCESS; or OCI_ERROR if type is invalid.
OCIDateTimeFromText(), OCIDateTimeToArray()
Converts the given string to an Oracle datetime type in the OCIDateTime descriptor, according to the specified format.
sword OCIDateTimeFromText ( void *hndl,
OCIError *err,
const OraText *date_str,
size_t dstr_length,
const OraText *fmt,
ub1 fmt_length,
const OraText *lang_name,
size_t lang_length,
OCIDateTime *datetime );
The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
The input string to be converted to an Oracle datetime.
The size of the input string. If the length is –1, then date_str is treated as a NULL-terminated string.
The conversion format. If fmt is a NULL pointer, then the string is expected to be in the default format for the datetime type.
The length of the fmt parameter.
Specifies the language in which the names and abbreviations of months and days are specified. The default language of the session is used if lang_name is NULL (lang_name = (text *)0).
The length of the lang_name parameter.
The given string converted to a date.
See the description of the TO_DATE conversion function in the Oracle Database SQL Language Reference for a description of the format argument.
OCI_SUCCESS; OCI_INVALID_HANDLE if err is NULL; or OCI_ERROR, if any of the following is true:
An invalid format is used.
An unknown language is used.
An invalid input string is used.
OCIDateTimeToText(), OCIDateTimeFromArray().
Gets the date (year, month, day) portion of a datetime value.
void OCIDateTimeGetDate ( void *hndl,
OCIError *err,
const OCIDateTime *datetime,
sb2 *year,
ub1 *month,
ub1 *day );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor from which date information is retrieved.
The retrieved year, month, and day values.
This function gets the date (year, month, day) portion of a datetime value.
OCI_SUCCESS; or OCI_ERROR, if the input type is SQLT_TIME or OCI_TIME_TZ.
Gets the time (hour, min, second, fractional second) of a datetime value.
void OCIDateTimeGetTime ( void *hndl,
OCIError *err,
OCIDateTime *datetime,
ub1 *hour,
ub1 *min,
ub1 *sec,
ub4 *fsec );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor from which time information is retrieved.
The retrieved hour value.
The retrieved minute value.
The retrieved second value.
The retrieved fractional second value.
This function gets the time portion (hour, min, second, fractional second) from a given datetime value.
This function returns an error if the given datetime does not contain time information.
OCI_SUCCESS; or OCI_ERROR, if datetime does not contain time (SQLT_DATE).
Gets the time zone name portion of a datetime value.
void OCIDateTimeGetTimeZoneName ( void *hndl,
OCIError *err,
const OCIDateTime *datetime,
ub1 *buf,
ub4 *buflen, );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor.
Buffer to store the retrieved time zone name.
The size of the buffer (IN). The size of the name field (OUT)
This function gets the time portion (hour, min, second, fractional second) from a given datetime value.
This function returns an error if the given datetime does not contain time information.
OCI_SUCCESS; or OCI_ERROR, if datetime does not contain a time zone (SQLT_DATE, SQLT_TIMESTAMP).
OCIDateTimeGetDate(), OCIDateTimeGetTimeZoneOffset()
Gets the time zone (hour, minute) portion of a datetime value.
void OCIDateTimeGetTimeZoneOffset ( void *hndl,
OCIError *err,
const OCIDateTime *datetime,
sb1 *hour,
sb1 *min, );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor.
The retrieved time zone hour value.
The retrieved time zone minute value.
This function gets the time zone hour and the time zone minute portion from a given datetime value.
This function returns an error if the given datetime does not contain time information.
OCI_SUCCESS; or OCI_ERROR, if datetime does not contain a time zone (SQLT_DATE, SQLT_TIMESTAMP).
OCIDateTimeGetDate(), OCIDateTimeGetTimeZoneName()
Adds an interval to a datetime to produce a resulting datetime.
sword OCIDateTimeIntervalAdd ( void *hndl,
OCIError *err,
OCIDateTime *datetime,
OCIInterval *inter,
OCIDateTime *outdatetime );
The user session or environment handle. If a session handle is passed, the addition occurs in the session default calendar.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to the input datetime.
Pointer to the input interval.
Pointer to the output datetime. The output datetime is of same type as the input datetime.
OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the resulting date is before Jan 1, -4713 or is after Dec 31, 9999.
Subtracts an interval from a datetime and stores the result in a datetime.
sword OCIDateTimeIntervalSub ( void *hndl,
OCIError *err,
OCIDateTime *datetime,
OCIInterval *inter,
OCIDateTime *outdatetime );
The user session or environment handle. If a session handle is passed, the subtraction occurs in the session default calendar. The interval is assumed to be in the session calendar.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to the input datetime value.
Pointer to the input interval.
Pointer to the output datetime. The output datetime is of same type as the input datetime.
OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the resulting date is before Jan 1, -4713 or is after Dec 31, 9999.
Takes two datetimes as input and stores their difference in an interval.
sword OCIDateTimeSubtract ( void *hndl,
OCIError *err,
OCIDateTime *indate1,
OCIDateTime *indate2,
OCIInterval *inter );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to the subtrahend (number to be subtracted).
Pointer to the minuend (number to be subtracted from).
Pointer to the output interval.
OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE if err is NULL pointer; or OCI_ERROR, if the input datetimes are not of comparable types.
Gets the system current date and time as a time stamp with time zone.
sword OCIDateTimeSysTimeStamp ( void *hndl,
OCIError *err,
OCIDateTime *sys_date );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to the output time stamp.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Converts an OCIDateTime descriptor to an array.
sword OCIDateTimeToArray ( void *hndl,
OCIError *err,
const OCIDateTime *datetime,
const OCIInterval *reftz,
ub1 *outarray,
ub4 *len
ub1 fsprec );
The OCI user session handle or environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to an OCIDateTime descriptor.
Descriptor for the OCIInterval used as a reference when converting the SQL_TIMESTAMP_LTZ type.
Array of bytes containing the date.
Length of outarray.
Fractional second precision in the array.
The array is allocated by OCI and its length is returned.
OCI_SUCCESS; or OCI_ERROR, if datetime is invalid.
OCIDateTimeToText(), OCIDateTimeFromArray()
Converts the given date to a string according to the specified format.
sword OCIDateTimeToText ( void *hndl,
OCIError *err,
const OCIDateTime *date,
const OraText *fmt,
ub1 fmt_length,
ub1 fsprec,
const OraText *lang_name,
size_t lang_length,
ub4 *buf_size,
OraText *buf );
The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Oracle datetime value to be converted.
The conversion format. If it is a NULL string pointer, (text*)0, then the date is converted to a character string in the default format for that type.
The length of the fmt parameter.
Specifies the precision in which the fractional seconds value is returned.
Specifies the language in which the names and abbreviations of months and days are returned. The default language of the session is used if lang_name is NULL (lang_name = (OraText *)0).
The length of the lang_name parameter.
The size of the buf buffer (IN).
The size of the resulting string after the conversion (OUT).
The buffer into which the converted string is placed.
See the description of the TO_DATE conversion function in the Oracle Database SQL Language Reference for a description of format and multilingual arguments. The converted NULL-terminated date string is stored in the buffer buf.
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is NULL; or OCI_ERROR, if any of the following statements is true:
The buffer is too small.
An invalid format is used.
An unknown language is used.
There is an overflow error.
Converts a date type to a character string.
sword OCIDateToText ( OCIError *err,
const OCIDate *date,
const OraText *fmt,
ub1 fmt_length,
const OraText *lang_name,
ub4 lang_length,
ub4 *buf_size,
OraText *buf );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Oracle date to be converted.
Conversion format. If NULL, (text *)0, then the date is converted to a character string in the default date format, DD-MON-YY.
Length of the fmt parameter.
Specifies the language in which names and abbreviations of months and days are returned; the default language of the session is used if lang_name is NULL ((text *)0).
Length of the lang_name parameter.
Size of the buffer (IN). Size of the resulting string is returned with this parameter (OUT).
Buffer into which the converted string is placed.
Converts the given date to a string according to the specified format. The converted NULL-terminated date string is stored in buf.
See the TO_DATE conversion function described in the Oracle Database SQL Language Reference for a description of format and multilingual arguments.
This function returns an error if the buffer is too small, or if the function is passed an invalid format or unknown language. Overflow also causes an error. For example, converting a value of 10 into format '9' causes an error.
OCIErrorGet(), OCIDateFromText()
Converts a date from one time zone to another.
sword OCIDateZoneToZone ( OCIError *err,
const OCIDate *date1,
const OraText *zon1,
ub4 zon1_length,
const OraText *zon2,
ub4 zon2_length,
OCIDate *date2 );
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Date to convert.
Zone of the input date.
Length in bytes of zon1.
Zone to be converted to.
Length in bytes of zon2.
Converted date (in zon2).
Converts a given date date1 in time zone zon1 to a date date2 in time zone zon2. Works only with North American time zones.
For a list of valid zone strings, see the description of the NEW_TIME function in the Oracle Database SQL Language Reference. Examples of valid zone strings include:
AST, Atlantic Standard Time
ADT, Atlantic Daylight Time
BST, Bering Standard Time
BDT, Bering Daylight Time
This function returns an error if an invalid date or time zone is passed to it.
Adds two intervals to produce a resulting interval.
sword OCIIntervalAdd ( void *hndl,
OCIError *err,
OCIInterval *addend1,
OCIInterval *addend2,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be added.
Interval to be added.
The resulting interval (addend1 + addend2).
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:
The two input intervals are not mutually comparable.
The resulting year is greater than SB4MAXVAL.
The resulting year is less than SB4MINVAL.
Copies one interval to another.
void OCIIntervalAssign ( void *hndl,
OCIError *err,
const OCIInterval *inpinter,
OCIInterval *outinter );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Input interval.
Output interval.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Checks the validity of an interval.
sword OCIIntervalCheck ( void *hndl,
OCIError *err,
const OCIInterval *interval,
ub4 *valid );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be checked.
Returns zero if the interval is valid; otherwise, it returns the logical operator OR combination of the codes specified in Table 19-9.
Table 19-9 Error Bits Returned by the valid Parameter for OCIIntervalCheck()
| Macro Name | Bit Number | Error |
|---|---|---|
|
|
0x1 |
Bad day |
|
|
0x2 |
Bad day low/high bit (1=low) |
|
|
0x4 |
Bad month |
|
|
0x8 |
Bad month low/high bit (1=low) |
|
|
0x10 |
Bad year |
|
|
0x20 |
Bad year low/high bit (1=low) |
|
|
0x40 |
Bad hour |
|
|
0x80 |
Bad hour low/high bit (1=low) |
|
|
0x100 |
Bad minute |
|
|
0x200 |
Bad minute low/high bit (1=low) |
|
|
0x400 |
Bad second |
|
|
0x800 |
Bad second low/high bit (1=low) |
|
|
0x1000 |
Bad fractional second |
|
|
0x2000 |
Bad fractional second low/high bit (1=low) |
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, on error.
Compares two intervals.
sword OCIIntervalCompare (void *hndl,
OCIError *err,
OCIInterval *inter1,
OCIInterval *inter2,
sword *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be compared.
Interval to be compared.
Comparison result as specified in Table 19-10.
Table 19-10 Comparison Results Returned by the result Parameter for OCIIntervalCompare()
| Comparison Result | Output in result Parameter |
|---|---|
|
|
-1 |
|
|
0 |
|
|
1 |
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the input values are not mutually comparable.
Divides an interval by an Oracle NUMBER to produce an interval.
sword OCIIntervalDivide ( void *hndl,
OCIError *err,
OCIInterval *dividend,
OCINumber *divisor,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be divided.
Oracle NUMBER dividing dividend.
The resulting interval ( dividend / divisor).
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Converts an Oracle NUMBER to an interval.
sword OCIIntervalFromNumber ( void *hndl,
OCIError *err,
OCIInterval *interval,
OCINumber *number );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval result.
Oracle NUMBER to be converted (in years for YEAR TO MONTH intervals and in days for DAY TO SECOND intervals).
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
When given an interval string, returns the interval represented by the string. The type of the interval is the type of the result descriptor.
sword OCIIntervalFromText ( void *hndl,
OCIError *err,
const OraText *inpstring,
size_t str_len,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Input string.
Length of the input string.
Resultant interval.
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:
There are too many fields in the literal string.
The year is out of range (–4713 to 9999).
The month is out of range (1 to 12).
The day of month is out of range (1 to 28...31).
The hour is out of range (0 to 23).
The hour is out of range (0 to 11).
The minutes are out of range (0 to 59).
The seconds in the minute are out of range (0 to 59).
The seconds in the day are out of range (0 to 86399).
The interval is invalid.
Returns an OCI_DTYPE_INTERVAL_DS of data type OCIInterval with the region ID set (if the region is specified in the input string) and the current absolute offset, or an absolute offset with the region ID set to 0.
sword OCIIntervalFromTZ ( void *hndl,
OCIError *err,
const oratext *inpstring,
size_t str_len,
OCIInterval *result ) ;
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Pointer to the input string.
Length of inpstring.
Output interval.
OCI_SUCCESS, on success; OCI_INVALID_HANDLE, if err is NULL; or OCI_ERROR, if there is a bad interval type or there are time zone errors.
The input string must be of the form [+/-]TZH:TZM or 'TZR [TZD]'
Gets values of day, hour, minute, and second from an interval.
sword OCIIntervalGetDaySecond (void *hndl,
OCIError *err,
sb4 *dy,
sb4 *hr,
sb4 *mm,
sb4 *ss,
sb4 *fsec,
const OCIInterval *interval );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Number of days.
Number of hours.
Number of minutes.
Number of seconds.
Number of fractional seconds.
The input interval.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Gets year and month from an interval.
sword OCIIntervalGetYearMonth ( void *hndl,
OCIError *err,
sb4 *yr,
sb4 *mnth,
const OCIInterval *interval );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Year value.
Month value.
The input interval.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Multiplies an interval by an Oracle NUMBER to produce an interval.
sword OCIIntervalMultiply ( void *hndl,
OCIError *err,
const OCIInterval *inter,
OCINumber *nfactor,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be multiplied.
Oracle NUMBER to be multiplied.
The resulting interval (inter * nfactor).
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:
The resulting year is greater than SB4MAXVAL.
The resulting year is less than SB4MINVAL.
Sets day, hour, minute, and second in an interval.
sword OCIIntervalSetDaySecond ( void *hndl,
OCIError *err,
sb4 dy,
sb4 hr,
sb4 mm,
sb4 ss,
sb4 fsec,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Number of days.
Number of hours.
Number of minutes.
Number of seconds.
Number of fractional seconds.
The resulting interval.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
Sets year and month in an interval.
sword OCIIntervalSetYearMonth ( void *hndl,
OCIError *err,
sb4 yr,
sb4 mnth,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Year value.
Month value.
The resulting interval.
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:
The resulting year is greater than SB4MAXVAL.
The resulting year is less than SB4MINVAL.
Subtracts two intervals and stores the result in an interval.
sword OCIIntervalSubtract ( void *hndl,
OCIError *err,
OCIInterval *minuend,
OCIInterval *subtrahend,
OCIInterval *result );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
The interval to be subtracted from.
The interval subtracted from minuend.
The resulting interval (minuend - subtrahend).
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:
The resulting year is greater than SB4MAXVAL.
The resulting year is less than SB4MINVAL.
The two input intervals are not mutually comparable.
Converts an interval to an Oracle NUMBER.
sword OCIIntervalToNumber ( void *hndl,
OCIError *err,
OCIInterval *interval,
OCINumber *number );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be converted.
Oracle NUMBER result (in years for YEARMONTH interval and in days for DAYSECOND).
Fractional portions of the date (for instance, minutes and seconds if the unit chosen is hours) are included in the Oracle NUMBER produced. Excess precision is truncated.
OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.
When given an interval, produces a string representing the interval.
sword OCIIntervalToText ( void *hndl,
OCIError *err,
const OCIInterval *interval,
ub1 lfprec,
ub1 fsprec,
OraText *buffer,
size_t buflen,
size_t *resultlen );
The OCI user session handle or the environment handle.
The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().
Interval to be converted.
Leading field precision. (The number of digits used to represent the leading field.)
Fractional second precision of the interval (the number of digits used to represent the fractional seconds).
Buffer to hold the result.
The length of buffer.
The length of the result placed into buffer.
The interval literal is output as 'year' or '[year-]month' for INTERVAL YEAR TO MONTH intervals and as 'seconds' or 'minutes[:seconds]' or 'hours[:minutes[:seconds]]' or 'days[ hours[:minutes[:seconds]]]' for INTERVAL DAY TO SECOND intervals (where optional fields are surrounded by brackets).
OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the buffer is not large enough to hold the result.
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