Ajouter la colonne 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 table_name
ALTER COLUMN column_name new_data_type(size);
ALTER TABLE dbo.doc_exa
ADD column_b VARCHAR(20) NULL,
column_c INT NULL ;ALTER TABLE table_name
ADD column_name datatype;