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The general form of the for statement can be expressed as follows: When using this version of the for statement, keep in mind that: 1  The initialization expression initializes the loop; it's executed once, as the loop begins. 2  When the termination expression evaluates to false, the loop terminates.
The DECLARE statement initializes a Transact-SQL variable by: 1  Assigning a name. The name must have a single @ as the first character. 2  Assigning a system-supplied or user-defined data type and a length. For numeric variables, a precision and scale are also assigned. 3  Setting the value to .