字符串函数 (Azure Cosmos DB)String functions (Azure Cosmos DB)
适用于：
SQL API
使用字符串函数可以对 Azure Cosmos DB 中的字符串执行操作。The string functions let you perform operations on strings in Azure Cosmos DB.
函数Functions
以下标量函数对字符串输入值执行操作，并返回字符串、数字或布尔值：The following scalar functions perform an operation on a string input value and return a string, numeric, or Boolean value:
- CONCATCONCAT
- CONTAINSCONTAINS
- ENDSWITHENDSWITH
- INDEX_OFINDEX_OF
- LEFTLEFT
- LENGTHLENGTH
- LOWERLOWER
- LTRIMLTRIM
- REGEXMATCHREGEXMATCH
- REPLACEREPLACE
- REPLICATEREPLICATE
- REVERSEREVERSE
- RIGHTRIGHT
- RTRIMRTRIM
- STARTSWITHSTARTSWITH
- StringToArrayStringToArray
- StringToBooleanStringToBoolean
- StringToNullStringToNull
- StringToNumberStringToNumber
- StringToObjectStringToObject
- SUBSTRINGSUBSTRING
- ToStringToString
- TRIMTRIM
- UPPERUPPER