Приложение столбца SQL
ALTER TABLE table_name
ADD column_name datatype;
--example
ALTER TABLE Customers
ADD Email varchar(255);
Cooperative Chinchilla
ALTER TABLE table_name
ADD column_name datatype;
--example
ALTER TABLE Customers
ADD Email varchar(255);ALTER TABLE dbo.doc_exa
ADD column_b VARCHAR(20) NULL,
column_c INT NULL ;ALTER TABLE table
ADD COLUMN column VARCHAR (255) NOT NULL AFTER column;ALTER TABLE table_name
ADD column_name datatype;ALTER TABLE table_name MODIFY COLUMN column_name datatype;ALTER TABLE Customers
ADD Email varchar(255);