Extract Year and Month from Date String in PostgreSQL
Use PostgreSQL regexp_matches to extract year and month components from date strings. SQL examples for date parsing.
The Regex Pattern
Regex pattern
^(\d{4})-(\d{2})Use this pattern with PostgreSQL's ~ operator.
PostgreSQL SQL Example
-- Extract year and month from date strings in a PostgreSQL reporting or analytics table for period-based grouping
SELECT *
FROM your_table
WHERE your_column ~ '^(\\d{4})-(\\d{2})';How This Works
Extract year and month from date strings in a PostgreSQL reporting or analytics table for period-based grouping. The regex pattern is used with PostgreSQL's ~ operator to filter rows at the database level.
Using regex directly in SQL is efficient for use cases like data extraction — it avoids loading data into application memory just to filter it with a regex.
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