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How to remove a column from an existing table?
This example is simple. Let’s remove the created column in existing table. 1.Just add a new column to an existing…
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SQL: ALTER Columns Statement to update NULLs to Not NULLs
SQL: This example updates allow NULLs to Not Nulls. ALTER TABLE dbo.tbl_temp ALTER COLUMN UserName VARCHAR(256) NOT NULL
