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decimal and numeric (Transact-SQL)

Numeric data types that have fixed precision and scale.

  • decimal[(p[,s])] and numeric[(p[,s])]
    Fixed precision and scale numbers. When maximum precision is used, valid values are from - 10^38 +1 through 10^38 - 1. The ISO synonyms for decimal are dec and dec(p, s). numeric is functionally equivalent to decimal.

  • p (precision)
    The maximum total number of decimal digits that can be stored, both to the left and to the right of the decimal point. The precision must be a value from 1 through the maximum precision of 38. The default precision is 18.

  • s (scale)
    The maximum number of decimal digits that can be stored to the right of the decimal point. Scale must be a value from 0 through p. Scale can be specified only if precision is specified. The default scale is 0; therefore, 0 <= s <= p. Maximum storage sizes vary, based on the precision.

    Precision

    Storage bytes

    1 - 9

    5

    10-19

    9

    20-28

    13

    29-38

    17