WebHow to Create a Table. How to Use DISTKEY, SORTKEY and Define Column Compression Encoding. How to Drop a Table. How to Rename a Table. How to Truncate a Table. How to Duplicate a Table. How to Add a Column. How to Drop … WebRename Table in PostgreSQL Use the ALTER TABLE RENAME TO statement to change name of the existing table. When you rename the table and give it a new name, …
PostgreSQL ADD COLUMN: Add One Or More Columns To a Table
WebOct 30, 2013 · The new table has a new table OID, but concurrent transaction have already resolved the table name to the OID of the previous table. When the lock is finally released, they try to lock the table themselves before writing to it and find that it's gone. Postgres will answer: ERROR: could not open relation with OID 123456 WebNov 15, 2024 · 1 The problem is that when you get around the access lock you still have the problem of errors with missing table after you renamed it. Oracle has a atomic switch, not sure if PG has one. So maybe downtime is a good solution after all. (Or a application side pool which allows to freeze new dB activity) – eckes Nov 15, 2024 at 11:54 2 sighten software
postgresql - Best way to populate a new column in a large table ...
http://docs-cn.greenplum.org/v5/ref_guide/sql_commands/ALTER_TABLE.html WebNov 29, 2014 · In Rails 4.0 when a column or a table is renamed the related indexes are also renamed. If you have migrations which rename the indexes, they are no longer needed. So ActiveRecord will automatically rename indexes to match the new table or column names when you rename the table or column. Thanks to sequielo for the heads-up on … WebFeb 9, 2024 · Description. ALTER VIEW changes various auxiliary properties of a view. (If you want to modify the view's defining query, use CREATE OR REPLACE VIEW .) You … sighten solar software