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Functions which compare values and return a true or false result. |
List of logical functions
The following logical functions are available:
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True and FalseThe values True and False are represented by 1 and 0 respectively in PhixFlow and any function which returns a logical value will return either 1 or 0.
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Comparator Type
Logical Some logical functions may take a Comparator Type parameter which specifies the comparison operations. These are strings with one of the following values:
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Specify the 2 items to compare and the comparator string as required by the logical function. For example, a comparator in a field condition has the syntax:
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fieldCondition(attrOne,_EQUALS,attrTwo) |
Comparators are used within the containing logical function and evaluate to either true or false.
Comparator strings are:
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| _LESS_THAN |
The first the second. Numerical and Alphabetic comparisons are handled| item 2 | numeric, alphabetic |
| _GREATER_THAN |
The first is greater than the second. Numerical and Alphabetic comparisons are handled| 1 is greater than the item 2 | numeric, alphabetic |
| _EQUALS |
The first is identical to the second. Numerical and Alphabetic comparisons are handled| 1 is identical to the item 2 | numeric, alphabetic |
| _GREATER_THAN_OR_EQUAL |
The first is | 1 is identical to or greater than |
the second. Numerical and Alphabetic comparisons are handled| the item 2 | numeric, alphabetic |
| _LESS_THAN_OR_EQUAL |
The first is | 1 is identical to or less than |
the second. Numerical and Alphabetic comparisons are handled| the item 2 | numeric, alphabetic |
| _NOT_EQUALS |
The first is the second. Numerical and Alphabetic comparisons are handled| the item 2 | numeric, alphabetic |
| _STARTS_WITH |
The first starts second string. Alphabetic comparisons only| string specified in item 2 | alphabetic |
| _NOT_STARTS_WITH |
The first does | 1 does not start with the |
second string. Alphabetic comparisons only| string specified in item 2 | alphabetic |
| _LIKE |
The first item is like the second string. Alphabetic comparisons only |
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| item 1 is like the item 2 | alphabetic |
| The following comparators, _IS_NOT_NULL and _IS_NULL, only have 1 item, which is compared to null. |
| _IS_NOT_NULL | item 1 is a non-null string or value. | numeric, alphabetic |
| _IS_NULL | item 1 is null. | numeric, alphabetic |