Alter Table Modify Column Sql Server Code Example


Example 1: sql change column types

ALTER TABLE table_name ALTER COLUMN column_name datatype;  -- Example ALTER TABLE product ALTER COLUMN description VARCHAR(250);

Example 2: sql add column

ALTER TABLE Customers ADD Email varchar(255);

Example 3: append column sql

ALTER TABLE table_name ADD column_name datatype;  --example ALTER TABLE Customers ADD Email varchar(255);

Example 4: sql server alter column

ALTER TABLE table_name  ALTER COLUMN column_name new_data_type(size);

Example 5: sql alter column size

ALTER TABLE table_name ALTER COLUMN column_name datatype;

Example 6: sqlserver add column to table

ALTER TABLE dbo.doc_exa  ADD column_b VARCHAR(20) NULL,  	column_c INT NULL ;

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