alter table column name sql server code example

Example 1: sql add column

ALTER TABLE Customers
ADD Email varchar(255);

Example 2: add multiple columns to table sql

//Example
ALTER TABLE employees
  ADD last_name VARCHAR(50),
      first_name VARCHAR(40);

Example 3: add multiple columns to table sql

ALTER TABLE table_name
  ADD column_1 column_definition,
      column_2 column_definition,
      ...
      column_n column_definition;

Example 4: modify column name in tsql

sp_rename 'table_name.old_column', 'new_name', 'COLUMN';

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