sql change column types
ALTER TABLE table_name
ALTER COLUMN column_name datatype;
-- Example
ALTER TABLE product
ALTER COLUMN description VARCHAR(250);sql change column types
ALTER TABLE table_name
ALTER COLUMN column_name datatype;
-- Example
ALTER TABLE product
ALTER COLUMN description VARCHAR(250);alter table query sql server change column
ALTER TABLE table_name
ALTER COLUMN column_name column_type;rename column sql
ALTER TABLE nom_table
RENAME COLUMN colonne_ancien_nom TO colonne_nouveau_nomalter table query sql server change column
ALTER TABLE employees
ALTER COLUMN last_name VARCHAR(75) NOT NULL;change data type in mysql
ALTER TABLE table_name
CHANGE COLUMN column_name column_name datatype;sql alter table
-- With check if field already exists
IF NOT EXISTS(SELECT 1 FROM sys.columns
WHERE Name = N'Email'
AND Object_ID = Object_ID(N'dbo.Customers'))
BEGIN
ALTER TABLE Customers
ADD Email varchar(255);
ENDCopyright © 2021 Codeinu
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