diff --git a/doc/FAQ b/doc/FAQ index eb767689e1d..1cbbd35a68a 100644 --- a/doc/FAQ +++ b/doc/FAQ @@ -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); diff --git a/doc/src/FAQ/FAQ.html b/doc/src/FAQ/FAQ.html index b69e3c66ccc..3117b90e6bd 100644 --- a/doc/src/FAQ/FAQ.html +++ b/doc/src/FAQ/FAQ.html @@ -10,7 +10,7 @@ alink="#0000ff">
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)
@@ -854,8 +854,8 @@
DROP COLUMN functionality was added in release 7.3 with - ALTER TABLE DROP COLUMN. In earlier versions, +
DROP COLUMN functionality was added in release 7.3 + with ALTER TABLE DROP COLUMN. In earlier versions, you can do this:
BEGIN; @@ -868,7 +868,10 @@ 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;