For example, ci specifies case-insensitive matching because the “i” occurs last in the string. If both c and i are included in the parameters string, the one that occurs last in the string dictates whether the function performs case-sensitive or case-insensitive When specifying multiple parameters, the string is entered with no spaces or delimiters.įor example, ims specifies case-insensitive matching in multi-line mode with POSIX wildcard matching. No sub-match extraction, except for REGEXP_REPLACE, which always uses sub-match extraction. The default string is simply c, which specifies: By default, wildcard character matching is disabled. The matches any string that starts with The -> Try it end matches a string that ends with end The end exact string match (starts and ends with The end) roar matches any string that has the. ^ and $ mark the beginning and end of the entire subject).Įxtracts sub-matches applies only to REGEXP_INSTR, REGEXP_SUBSTR, REGEXP_SUBSTR_ALL, and the aliases for these functions.Įnables the POSIX wildcard character. Matching the exact string with a regex requires showing the match. By default, multi-line mode is disabled (i.e. Use the match () Method for String Match With Regex. meta-characters ^ and $ mark the beginning and end of any line of the subject). The following parameters are supported:Įnables multi-line mode (i.e. The parameters argument is a VARCHAR string that specifies the matchingīehavior of the regular expression function. Most regular expression functions support an optional parameters argument as the very last input. Specifying the Parameters for the Regular Expression ¶ Also, for functions that take or return subject offsets, a single Unicode character counts as 1. Regardless of the byte-length of the corresponding binary representation of that character. A single Unicode character always counts as one character (i.e. with (.|\n) in the pattern argument, or use the s parameter in the parameters argument (describedĪll the regular expression functions support Unicode.
To also match newline characters, either replace. (in the pattern) does not include newline characters \n (in the subject) as matches. Pairs of dollar signs ($$) (rather than single quotes).īy default, the POSIX wildcard character.
You do not need to escape backslashes if you are delimiting the string with Specifying Regular Expressions in Single-Quoted String Constants (in this topic). In single-quoted string constants, you must escape the backslash character in
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