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TRUNCATE TABLE. The TRUNCATE TABLE command deletes the data inside a table, but not the table itself. The following SQL truncates the table "Categories":
Sep 6, 2024 · The TRUNCATE TABLE statement in SQL is used to quickly remove all rows from a table, effectively emptying the table. Unlike the DELETE statement, which removes rows one at a time and can be rolled back (depending on the database support for transactions).
IF EXISTS can be used for check if a table is empty. IF EXISTS (select * from YourTable) SELECT 'Table is not empty' ELSE SELECT 'Table is empty'
Feb 27, 2009 · SELECT table_name, column_name, is_nullable, data_type, character_maximum_length FROM INFORMATION_SCHEMA.Columns WHERE table_name = 'employees' In your case, all you need are the column names; SELECT column_name FROM INFORMATION_SCHEMA.Columns WHERE table_name = 'employees'
Jan 25, 2024 · Often, one needs to clear out all data from a table without deleting the table itself, which maintains its structure for future data. This tutorial will show you how to empty a table in MySQL 8, ensuring that all the data is erased but the table structure remains intact.
Introduction to the SQL TRUNCATE TABLE statement. To delete all data from a table, you use the DELETE statement without a WHERE clause. For a big table that has few million rows, the DELETE statement is slow and not efficient. To delete all rows from a big table fast, you use the following TRUNCATE TABLE statement:
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The SQL TRUNCATE TABLE command is used to empty a table. This command is a sequence of DROP TABLE and CREATE TABLE statements and requires the DROP privilege.