https://www.postgresql.org › docs › current › sql-droptable.htm
PostgreSQL: Documentation: 17: DROP TABLELearn how to use DROP TABLE to remove a table from the database, with or without the IF EXISTS option. See the syntax, parameters, examples, and compatibility of this SQL command.
Description. DROP TABLE removes tables from the database. Only its owner may destroy a table. To empty a table of rows, without destroying the table, use DELETE.. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table. However, to drop a table that is referenced by a view or a foreign-key constraint of another table, CASCADE must be specified.
DROP TABLESPACE removes a tablespace from the system. A tablespace can only be dropped by its owner or a superuser. The tablespace must be empty of all database objects before it can be dropped. It is possible that objects in other databases might still reside in the tablespace even if no objects in the current database are using the tablespace.
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DROP EXPRESSION [ IF EXISTS ] # This form turns a stored generated column into a normal base column. Existing data in the columns is retained, but future changes will no longer apply the generation expression. If DROP EXPRESSION IF EXISTS is specified and the column is not a stored generated column, no error is thrown. In this case a ...
with_query. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the DELETE query. See Section 7.8 and SELECT for details.. table_name. The name (optionally schema-qualified) of the table to delete rows from. If ONLY is specified before the table name, matching rows are deleted from the named table only. If ONLY is not specified, matching rows are also ...
https://stackoverflow.com › questions › 24488730
Drop table if exists in PostgreSQL database - Stack OverflowI am trying to drop table if it is exists in the present working database of PostgreSQL. For which I am trying the following query. Example: var1 := 'IF EXISTS (select * from INFORMATION_SCHEMA.TABLES WHERE name = ''Table_'|| Suffix ||''') then. DROP TABLE Table_'||Suffix||''; execute var1; But getting error near IF.
https://www.postgresqltutorial.com › postgresql-tutorial › postgresql-drop-table
PostgreSQL DROP TABLELearn how to use the DROP TABLE statement to remove one or more tables from the database. See how to use the IF EXISTS, CASCADE, and RESTRICT options and how to handle dependent objects.
https://database.guide › drop-table-if-exists-example-in-postgresql
DROP TABLE IF EXISTS Example in PostgreSQL - Database.GuideLearn how to use the IF EXISTS clause of the DROP TABLE statement to check and drop a table in PostgreSQL. See the difference between using and not using IF EXISTS, and the error and notice messages.
https://docs.postgresql.fr › 17 › sql-droptable.html
DROP TABLE - PostgreSQLDROP TABLE supprime tout index, règle, trigger ou contrainte qui existe sur la table cible. Néanmoins, pour supprimer une table référencée par une vue ou par une contrainte de clé étrangère d'une autre table, CASCADE doit être ajouté.
https://www.slingacademy.com › article › how-to-drop-a-table-in-postgresql-if-it-exists
How to Drop a Table in PostgreSQL if It Exists - Sling AcademyLearn how to use the DROP TABLE command with IF EXISTS clause to avoid errors when deleting tables in PostgreSQL. Explore advanced topics such as dropping multiple tables, batch operations, scripting, error handling, and maintenance.
https://commandprompt.com › education › postgresql-drop-if-exists-vs-drop
PostgreSQL Drop if Exists VS Drop - CommandPrompt Inc.Learn how to use the DROP and DROP IF EXISTS commands in PostgreSQL to delete tables. See the difference between them and how to avoid errors with examples.
https://www.postgresql.org › docs › current › sql-altertable.htm
PostgreSQL: Documentation: 17: ALTER TABLEDROP EXPRESSION [ IF EXISTS ] # This form turns a stored generated column into a normal base column. Existing data in the columns is retained, but future changes will no longer apply the generation expression. If DROP EXPRESSION IF EXISTS is specified and the column is not a stored generated column, no error is thrown. In this case a ...
https://database.guide › drop-table-if-exists-in-sql
DROP TABLE IF EXISTS in SQL - Database.GuideIn SQL, we can use the DROP TABLE IF EXISTS statement to drop a table only if it exists. While it may seem obvious that we can only drop a table if it exists (i.e. we can’t drop a table that doesn’t exist), there’s a good reason for using this statement.
https://postgrespro.com › docs › postgresql › 10 › sql-droptable.html
PostgreSQL : Documentation: 10: DROP TABLE : Postgres ProfessionalDROP TABLE removes tables from the database. Only the table owner, the schema owner, and superuser can drop a table. To empty a table of rows without destroying the table, use DELETE or TRUNCATE. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table.
