ニュース

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.
Using MS SQL Server, is there a way to query all of the tables in a database for a specific column name?Thanks,Pete ...
When the ALTER TABLE statement adds a column to the table, it initializes the column's values to missing in all rows of the table. Use the UPDATE statement to add values to the new column (s).