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TIMESTAMP_CMP_DATE function - Amazon Redshift

TIMESTAMP_CMP_DATE function

TIMESTAMP_CMP_DATE compares the value of a timestamp and a date. If the timestamp and date values are identical, the function returns 0. If the timestamp is greater chronologically, the function returns 1. If the date is greater, the function returns -1.

Syntax

TIMESTAMP_CMP_DATE(timestamp, date)

Arguments

timestamp

A column of data type TIMESTAMP or an expression that implicitly evaluates to a TIMESTAMP type.

date

A column of data type DATE or an expression that implicitly evaluates to a DATE type.

Return type

INTEGER

Examples

The following example compares LISTTIME to the date 2008-06-18. Listings made after this date return 1; listings made before this date return -1. LISTTIME values are timestamps.

select listid, listtime, timestamp_cmp_date(listtime, '2008-06-18') from listing order by 1, 2, 3 limit 10; listid | listtime | timestamp_cmp_date --------+---------------------+-------------------- 1 | 2008-01-24 06:43:29 | -1 2 | 2008-03-05 12:25:29 | -1 3 | 2008-11-01 07:35:33 | 1 4 | 2008-05-24 01:18:37 | -1 5 | 2008-05-17 02:29:11 | -1 6 | 2008-08-15 02:08:13 | 1 7 | 2008-11-15 09:38:15 | 1 8 | 2008-11-09 05:07:30 | 1 9 | 2008-09-09 08:03:36 | 1 10 | 2008-06-17 09:44:54 | -1 (10 rows)
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