Caché Transact-SQL (TSQL) Migration Guide - InterSystems ...

TSQL Functions6.1.50 PATINDEXPATINDEX(pattern,string)Returns an integer specifying the beginning position of the first occurrence of pattern in string, counting from 1. If patternis not found in string, 0 is returned. Specify pattern as a quoted string. Comparisons are case sensitive. The pattern cancontain the following wildcard characters:%_[xyz][a-z]Zero or more characters. For example, '%a%' returnsthe position of the first occurrence of 'a' in string,including 'a' as the first character in string.Any single character. For example, '_l%' returns 1 ifstring begins with a substring such as 'Al', 'el', and 'il'.Any single character from the specified list ofcharacters. For example, '[ai]l%' returns 1 if stringbegins with the substring 'al' or 'il', but not 'el' or 'Al'.Any single character from the specified range ofcharacters. For example, '%s[a-z]t%' matches 'sat','set', and 'sit'. A range must be specified in ascendingASCII sequence.The caret (^) character is a not a wildcard character; if included within square brackets it is treated as a literal. A patterncommonly consists of a search string enclosed in percent (%) characters '%Chicago%' indicating that the entire stringshould be searched.6.1.51 PIPI()Returns the constant pi. The parentheses are required; no argument is permitted. Thus PI() returns 3.141592653589793238.6.1.52 POWERPOWER(num,exponent)Returns the value num raised to exponent.6.1.53 QUOTENAMEQUOTENAME(value)Returns value as a delimited identifier. TSQL only supports double quotes ("value") as delimiter characters.46 Caché Transact-SQL (TSQL) Migration Guide