IsNull

Table of Contents

Returns true (1) if the given value is null, otherwise false (0). This is how to test for missing fields and for the unmatched side of an outer join.

Boolean IsNull(String value = null)

Boolean functions return 1 for true and 0 for false. In a WHERE clause compare the result to 1 (or true), for example: WHERE IsLike(Text, 'Cat%') = 1

Selects words that have no matching language.

SELECT w.Text FROM WordList:Word as w OUTER JOIN WordList:Language as l ON l.Id = w.LanguageId WHERE IsNull(l.Name) = 1

Returns true (1) if the value is outside of the given range. The range boundaries are considered inside the range.

Returns true (1) if the two given values are not equal. The comparison is case-sensitive.

Returns true (1) if the text does not match the pattern. See Like for the wildcards.

Returns true (1) if the given value is a number: digits with an optional leading sign and an optional decimal point. Null and empty values return 0.

Returns true (1) if the given value cannot be converted to a number.

A breakdown of all of the statements and keywords supported by the query processor.

Returns the zero-based position of the last occurrence of textToFind in textToSearch. Returns -1 when it is not found.

Returns the given number of characters from the start of the value.

Combines documents from two or more schemas, keeping documents that have no match.

Returns the number of characters in the given value.