alter table add field code example
Example 1: alter table add column
ALTER TABLE table
ADD COLUMN column VARCHAR (255) NOT NULL AFTER column;
Example 2: sqlserver add column to table
ALTER TABLE dbo.doc_exa
ADD column_b VARCHAR(20) NULL,
column_c INT NULL ;
Example 3: alter table add column
ALTER TABLE table_name
ADD column_name datatype;
Example 4: change data type in mysql
ALTER TABLE table_name
CHANGE COLUMN column_name column_name datatype;