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How do I perform regular expression searches and case-insensitive regular expression searches? How do I use an index for case-insensitive searches?

April 26, 2017case-insensitive expression index perform regular Searches

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How do I perform regular expression searches and case-insensitive regular expression searches? How do I use an index for case-insensitive searches?

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The ~ operator does regular expression matching, and ~* does case-insensitive regular expression matching. The case-insensitive variant of LIKE is called ILIKE.