add column if not exists postgres
You'll need to write your own stored procedure in Plpgsql to check if the table has this column. For this you'll need the tables PG_ATTRIBUTE ...,When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]. This form adds ... ,When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]. This form adds ... , When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]., Here's a short-and-sweet version using the "DO" statement: DO $$ BEGIN BEGIN ALTER TABLE <table_name> ADD COLUMN ..., , Looks like you found a minor bug. I can recreate it in Postgres 9.6 and 10: db<>fiddle here. In fact, it has been reported in Sept 2017. An attempt ...
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 add column if not exists postgres 相關參考資料
Add Column If Not Exists in Postgresql - Stack Overflow
You'll need to write your own stored procedure in Plpgsql to check if the table has this column. For this you'll need the tables PG_ATTRIBUTE ... https://stackoverflow.com Documentation: 10: ALTER TABLE - PostgreSQL
When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]. This form adds ... https://www.postgresql.org Documentation: 12: ALTER TABLE - PostgreSQL
When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]. This form adds ... https://www.postgresql.org Documentation: 9.6: ALTER TABLE - PostgreSQL
When multiple subcommands are given, the lock acquired will be the strictest one required by any subcommand. ADD COLUMN [ IF NOT EXISTS ]. https://www.postgresql.org How to add column if not exists on PostgreSQL? - Stack ...
Here's a short-and-sweet version using the "DO" statement: DO $$ BEGIN BEGIN ALTER TABLE <table_name> ADD COLUMN ... https://stackoverflow.com How to Perform the Postgres ADD COLUMN IF NOT EXISTS ...
https://kb.objectrocket.com Postgresql ADD SERIAL COLUMN IF NOT EXISTS still ...
Looks like you found a minor bug. I can recreate it in Postgres 9.6 and 10: db<>fiddle here. In fact, it has been reported in Sept 2017. An attempt ... https://stackoverflow.com |