For SQL Server: ALTER TABLE TableName DROP COLUMN Column1, Column2;. The syntax is. DROP { [ CONSTRAINT ] constraint_name | COLUMN column } ... ... <看更多>

Learn how to drop columns from a table in this video tutorial and also why you might come across some errors.In this SQL Tutorial I ... ... <看更多>

Changes that affect all the rows in large tables, such as dropping a column or, on some editions of SQL Server, adding a NOT NULL column with a ... ... <看更多>