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  1. stackoverflow.com › questions › 24488730Drop table if exists in PostgreSQL database - Stack Overflow

    30 Ιουν 2014 · I 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.

  2. stackoverflow.com › questions › 48102295postgresql - Rename column only if exists - Stack Overflow

    30 Απρ 2020 · Rename Column Only If Exists in PostgreSQL. DO $$ BEGIN. IF EXISTS(SELECT * FROM information_schema.columns. WHERE table_name='your_table' and column_name='your_column') THEN. ALTER TABLE "public"."your_table" RENAME COLUMN "your_column" TO "your_new_column"; END IF;

  3. www.baeldung.com › sql › drop-table-if-existsDropping a Database Table if It Exists in SQL - Baeldung

    7 Σεπ 2024 · In this article, we learned how to drop a table in a database using the DROP TABLE clause while compensating for a possible non-existent table using the IF EXISTS modifier. This is helpful for automation, where SQL scripts run autonomously.

  4. database.guide › drop-table-if-exists-in-sqlDROP TABLE IF EXISTS in SQL - Database.Guide

    23 Δεκ 2023 · In 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.

  5. database.guide › drop-table-if-exists-example-in-postgresqlDROP TABLE IF EXISTS Example in PostgreSQL - Database.Guide

    5 Ιαν 2022 · In PostgreSQL, we can use the IF EXISTS clause of the DROP TABLE statement to check whether the table exists or not before dropping it. Example. Here’s an example to demonstrate: DROP TABLE IF EXISTS t1; That statement drops a table called t1 if it exists.

  6. www.slingacademy.com › article › how-to-drop-a-table-in-postgresql-if-it-existsHow to Drop a Table in PostgreSQL if It Exists - Sling Academy

    4 Ιαν 2024 · The DROP TABLE command in SQL is used to delete a table and its data from the database. In its simplest form, you can drop a table by running: DROP TABLE table_name; Checking for Table Existence. Directly dropping a table without checking can lead to errors if the table doesn’t exist.

  7. www.postgresql.org › docs › currentPostgreSQL: Documentation: 17: DROP TABLE

    26 Σεπ 2024 · DROP 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.