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In such cases, you use the following ALTER TABLE DROP COLUMN statement: ALTER TABLE table_name. DROP COLUMN column_name; Code language: SQL (Structured Query Language) (sql) In this syntax: First, specify the name of the table that contains the column which you want to drop after the ALTER TABLE keywords.
20 Δεκ 2012 · Use ALTER TABLE with DROP COLUMN to drop a column from a table, and CHANGE or MODIFY to change a column. ALTER TABLE tbl_Country DROP COLUMN IsDeleted; ALTER TABLE tbl_Country MODIFY IsDeleted tinyint(1) NOT NULL; ALTER TABLE tbl_Country CHANGE IsDeleted IsDeleted tinyint(1) NOT NULL;
MySQL DROP COLUMN statement allows us to drop one or more columns from the MySQL table. Dropping a column deletes the data which belongs to that column.
13 Μαρ 2024 · To delete a column, use ALTER TABLE and DROP COLUMN as demonstrated below: ALTER TABLE table_name DROP COLUMN column_name; Here, table_name is the name of the table from which you want to remove a column, and column_name is the name of the column you wish to delete.
MySQL Drop Columns Tutorial and Examples. In this article, you will learn how to drop one or more columns from a table using MySQL ALTER TABLE ... DROP COLUMN statements. Occasionally, you may need to drop one or more columns from an existing table for the following reasons: This column is redundant. This column has been replaced by another column.
ALTER TABLE table_name. DROP COLUMN column_name1, [DROP COLUMN column_name2]; Code language: SQL (Structured Query Language) (sql) In this syntax: table_name is the name of the table which contains the columns that you are removing. column_name1, column_name2 are the columns that you are dropping.
