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Alter table add column check

Code examples

21
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alter table add column 

ALTER TABLE table_name
ADD column_name datatype;
1
0

sql alter table add column if exists 

IF NOT EXISTS (
  SELECT
    *
  FROM
    INFORMATION_SCHEMA.COLUMNS
  WHERE
    TABLE_NAME = 'table_name' AND COLUMN_NAME = 'col_name')
BEGIN
  ALTER TABLE table_name
    ADD col_name data_type NULL
END;

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