SQL function SQUARE

A scalar numeric function that returns the square of a number.

Outline

SQUARE(numeric-expression)

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parameter

• numeric-expression - An expression that resolves to a numeric value.

SQUARE returns NUMERIC or DOUBLE data types.If numeric-expression is of data type DOUBLE, SQUARE returns DOUBLE; otherwise, it returns NUMERIC.

Description

SQUARE Returns the square of a numeric expression.If a NULL value is passed, SQUARE returns NULL.

SQUARE returns the same precision and scale as the SQL multiply operator.

Example

The following embedded SQL example returns the square of the integer 0 to 10:

/// d ##class(PHA.TEST.SQLFunction).Square()ClassMethod Square(){s a = 0while a < 11 {&sql(SELECT SQUARE(:a) INTO :b)if SQLCODE '= 0 {w !,"Error code ",SQLCODE} else {w !,"The square of ",a," = ",bs a = a + 1}}}

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DHC-APP>d ##class(PHA.TEST.SQLFunction).Square()The square of 0 = 0The square of 1 = 1The square of 2 = 4The square of 3 = 9The square of 4 = 16The square of 5 = 25The square of 6 = 36The square of 7 = 49The square of 8 = 64The square of 9 = 81The square of 10 = 100

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