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drop primary key constraint sql. Constraints prevent the deletion of a table if there are dependencies. SQL CREATE TABLE emp( 6 CONSTRAINT dept deptno pk PRIMARY KEY(deptno)) . 11-5 Remove the PRIMARY KEY constraint on the DEPT table and drop the  If the DROP option is specified, drop statements are created for tables, views, and sequences. If the block . Removes a constraint or a primary key from a table. Dropping Unnamed or Named Foreign Key Constraints. New in version In the case of a SQL script, the values are rendered inline into the statement. e.g. . Issue a “create primary key� instruction using the current migration context. e.g. SQL primary key with sql, tutorial, examples, insert, update, delete, select, join, When we specify a primary key constraint for a table, database engine If you want to DROP (remove) a primary key constraint, you should use following syntax . SQL select first query with sql, tutorial, examples, insert, update, delete, select, When we specify a primary key constraint for a table, database engine If you want to DROP (remove) a primary key constraint, you should use following syntax . This is a MySQL extension to standard SQL, which permits only one of each clause per ALTER TABLE statement. DROP PRIMARY KEY drops the primary key. If there is no See Section 14.6.5.6, “InnoDB and FOREIGN KEY Constraints�. Ok, so I try to create a temporary clustered index in order to drop the PK A Yes, same as above, as long as the primary key constraint is not  What is the SQL PRIMARY KEY Constraint and how it can be used with the database The SQL PRIMARY KEY Constraint is required to identify each row in the table uniquely. Sql Primary key constraint on table column that identifies uniquely each row in Example sql statement ALTER TABLE table name DROP PRIMARY KEY   SQL PRIMARY KEY Constraint The PRIMARY KEY constraint uniquely identifies each record in a To drop a PRIMARY KEY constraint, use the following SQL . Now, how do I remove the primary key constraint Help me in this link qlteam.com/brettk/archive/2005/05/25/5276.aspx  you are at Encyclopedia of SQL PRIMARY KEY. PRIMARY Each table should have primary key but it isn t necessary. DROP CONSTRAINT pk name Learn how to create, change, drop, disable, and enable a primary key in SQL Server CONSTRAINT constraint name PRIMARY KEY (column1, column2,