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Diffstat (limited to 'doc/FAQ')
-rw-r--r-- | doc/FAQ | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -1,7 +1,7 @@ Frequently Asked Questions (FAQ) for PostgreSQL - Last updated: Sun Jan 16 21:40:18 EST 2005 + Last updated: Sun Jan 16 22:01:06 EST 2005 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) @@ -690,7 +690,10 @@ log_* ALTER TABLE new_table RENAME TO old_table; COMMIT; - To change the data type of a column, do this: + Changing the data type of a column can be done easily in 8.0 and later + with ALTER TABLE ALTER COLUMN TYPE. + + In earlier releases, do this: BEGIN; ALTER TABLE tab ADD COLUMN new_col new_data_type; UPDATE tab SET new_col = CAST(old_col AS new_data_type); |