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Diffstat (limited to 'doc/FAQ')
| -rw-r--r-- | doc/FAQ | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -1,7 +1,7 @@ Frequently Asked Questions (FAQ) for PostgreSQL - Last updated: Mon Mar 29 00:07:11 EST 2004 + Last updated: Fri Jun 4 00:09:16 EDT 2004 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) @@ -965,11 +965,11 @@ BYTEA bytea variable-length byte array (null-byte safe) all databases. If you want to change the OID to something else, or if you want to make a copy of the table, with the original OIDs, there is no reason you can't do it: - CREATE TABLE new_table(old_oid oid, mycol int); - SELECT old_oid, mycol INTO new FROM old; - COPY new TO '/tmp/pgtable'; - DELETE FROM new; - COPY new WITH OIDS FROM '/tmp/pgtable'; + CREATE TABLE new_table(mycol int); + SELECT oid AS old_oid, mycol INTO tmp_table FROM old_table; + COPY tmp_table TO '/tmp/pgtable'; + COPY new_table WITH OIDS FROM '/tmp/pgtable'; + DROP TABLE tmp_table; OIDs are stored as 4-byte integers, and will overflow at 4 billion. No one has reported this ever happening, and we plan to have the limit |