Declaring variable type based on a column type

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忘掉有多难
忘掉有多难 2020-12-18 18:26

In Oracle\'s PL-SQL, you can declare a variable and define its type based on a table column:

declare var1 table.column%TYPE;

Is it possible

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  • 2020-12-18 19:03

    It may skirt the real issue, but you can "cheat" a little bit by

    Select *
    INTO #tmp
    From MyTable
    Where 1 = 0
    

    Will automatically create a temp table with all columns with correct data types.

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  • 2020-12-18 19:18

    No you can't do this. The closest equivalent is User-Defined Data Types. This will give you a layer of abstraction that may help, but it is not the same as deriving a type from a column.

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