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Function Reference

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Comparison operators

Use comparison operators to compare string or numeric strings, manipulate data, and return a TRUE (1) or FALSE (0) value.

The following table lists the transformation language comparison operators:

Operator	Meaning
=	Equal to.
>	Greater than.
<	Less than.
>=	Greater than or equal to.
<=	Less than or equal to.
<>	Not equal to.
!=	Not equal to.
^=	Not equal to.

Use the greater than (>) and less than (<) operators to compare numeric values or return a range of rows based on the sort order for a primary key in a particular field

When you use comparison operators in an expression, the operands must be the same datatype. For example, the expression 123.4 > ‘123’ is not valid because the expression compares a decimal with a string. The expressions 123.4 > 123 and ‘a’ != ‘b’ are valid because the operands are the same datatype.

If you compare a value to a null value, the result is NULL.

If a filter condition evaluates to NULL,

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returns NULL.

Operators

Comparing hierarchies

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