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$CALC_DATE calculates a new date from a specified date or column_date using a numeric positive or negative offset. The offset defaults to days but can be changed by using the date_unit optional argument.
Result = $calc_date( <date_column | 'date_string' >, offset [, date_unit [, options])
Returns a floating point value.
An expression resulting in date-class or string-class datatype.
An expression resulting in a numeric-class (integer or floating point) value.
Negative values supported.
A string containing unit abbreviation that tell the $calc_date function to add or subtract the number of date_units.
Valid datefield Options:
Date_field | Description |
---|---|
YEAR | Year |
MONTH | Month |
DAY | Day |
HOUR | Hour |
MINUTE | Minute |
SECOND | Second |
W | Day of the week number (1-Sunday, 2-Monday) |
WW | Three-character day-of-week abbreviation (Sun, Mon) |
WWW | Fully spelled day-of-week (Sunday, Monday) |
M | Non-zero-filled month number (1-January, 2-February) |
0M | Zero-filled day-of-month number (01-January, 02-February) |
MM | Three-character month abbreviation (Jan, Feb) |
MMM | Fully spelled month (January, February) |
D | Non-zero-filled day-of-month (1, 2, 3) |
0D | Zero-filled day-of-month (01, 02, 03) |
J | Non-zero-filled Julian date (1, 2) |
0J | Zero-filled Julian date (01, 02) |
YY | Two-digit year (99, 00) |
YYYY | Four-digit year (1999, 2000) |
H | 12-hour, non-zero-filled hour of day (12, 1) |
0H | 12-hour, zero-filled hour of day (12, 01) |
HH | 24-hour, non-zero-filled hour of day (24, 1) |
0HH | 24-hour, zero-filled hour of day (24, 01) |
N | Non-zero-filled minute of hour (1, 2) |
0N | Zero-filled minute of hour (01, 02) |
S | Non-zero-filled second of minute (1, 2) |
0S | Zero-filled second of minute (01, 02) |
F | Non-zero-filled fraction of a second (1, 2) |
0F | Zero-filled fraction of a second (01, 02) |
A | Lowercase am/pm indicator |
AA | Uppercase AM/PM indicator |
There are no options currently for this function.
> select $calc_date('20090101', -5) from $omnidex $CALC_DATE('20090101', ---------------------- 2008-12-27
> select $calc_date('20090101', -5,YEAR) from $omnidex $CALC_DATE('20090101', ---------------------- 2004-01-01