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| - | ====== Omnidex SQL Function: EXTRACT ====== | ||
| - | ===== Description ===== | ||
| - | The EXTRACT function extracts one or more portions of a date, such as a day, month or year. This is useful for performing logic on portions of a date, such as performing certain actions in certain months. This is also useful for assembling a date string in a specific format. | ||
| - | This function returns a different datatype based on the requested field value. | ||
| - | ===== Syntax ===== | ||
| - | |||
| - | EXTRACT(date_tokens FROM date_column) | ||
| - | |||
| - | == date_tokens == | ||
| - | |||
| - | Required. One or more tokens representing the portions of date to be extracted, as determined by one or more of the strings shown in the table below. | ||
| - | |||
| - | {{page>dev:appendix:date_tokens&noheader&nofooter&noeditbtn}} | ||
| - | |||
| - | |||
| - | == date_column == | ||
| - | |||
| - | Required. A column that is declared as a date_class datatype. The date_class datatypes are any of the date or time oriented datatypes found in the list of [[dev:appendix:reference:datatypes|Omnidex datatypes]]. | ||
| - | |||
| - | |||
| - | ===== Example ===== | ||
| - | ==== Example 1: EXTRACT of MONTH ==== | ||
| - | |||
| - | <code> | ||
| - | > select birthdate, extract(month from birthdate) mon from individuals; | ||
| - | |||
| - | BIRTHDATE MON | ||
| - | ------------ ----------- | ||
| - | 1938-07-14 7 | ||
| - | 1957-11-22 11 | ||
| - | 1960-07-28 7 | ||
| - | 1929-08-22 8 | ||
| - | 1933-07-09 7 | ||
| - | 1944-08-01 8 | ||
| - | 2004-09-14 9 | ||
| - | </code> | ||
| - | |||
| - | ==== Example 2: $RANDOM with a seed ==== | ||
| - | |||
| - | <code> | ||
| - | > select $random(12345) rnd from $omnidex; | ||
| - | |||
| - | RND | ||
| - | ----------- | ||
| - | 1255939488 | ||
| - | </code> | ||
| - | |||
| - | ====== Additional Resources ====== | ||
| - | |||
| - | See also: | ||
| - | {{page>dev:sql:functions:see_also_date&noheader&nofooter&noeditbtn}} | ||
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| - | |||
| - | {{page>:bottom_add&nofooter&noeditbtn}} | ||
| - | |||
| - | |||
| - | ### | ||
| - | |||
| - | ===== Example ===== | ||
| - | |||
| - | <code> | ||
| - | select status, | ||
| - | extract(mmm FROM orders.order_date) | ||
| - | from orders | ||
| - | where product_no='PRN4356' | ||
| - | |||
| - | ORDR JANUARY | ||
| - | ORDR DECEMBER | ||
| - | CNCL MARCH | ||
| - | </code> | ||
| - | |||
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