1 Scope
This Technical Report describes the regular expression support in SQL adopted from the regular expression syntax of [XQuery F&O], which is derived from Perl. This Technical Report discusses five operators using this regular expression syntax:
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— LIKE_REGEX predicate, to determine the existence of a match to a regular expression.
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— OCCURRENCES_REGEX numeric function, to determine the number of matches to a regular expression.
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— POSITION_REGEX function, to determine the position of a match.
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— SUBSTRING_REGEX function, to extract a substring matching a regular expression.
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— TRANSLATE_REGEX function, to perform replacements using a regular expression.