那么你可以通过它来分割并得到第一部分/子字符串：split_part(string, '_', 1)。
STRING_SPLIT is a table-valued function that splits a string into rows of substrings, based on a specified separator character.Compatibility level 130STRING_SPLIT requires the compatibility level to be at least 130. When the level is less than 130, the Database Engine is unable to find the...
如果输入字符串为 NULL,则 STRING_SPLIT 表值函数返回一个空表。 示例一 SELECT Value FROM STRING_SPLIT('SQL-数据库-开发', '-'); 结果 示例二 WITH t AS ( SELECT 1 ID,'张三' Name,'足球,篮球,羽毛球' Hobby UNION ALL SELECT 2 ,'李四','足球,游泳,爬山' ) SELECT ID, Name, Value FROM ...
SQL Server 2016 introduced a new built-in table-valued function,STRING_SPLITthat splits the provided input string by a specified separation character and returns the output separated values in the form of table, with a row for each delimited value between each separator character. STRING_SPLIT fu...
STRING_SPLIT 函数不可用。 STRING_SPLIT 函数在兼容性级别 130 或更高级别下可用。 如果数据库兼容性级别低于 130,SQL Server 将无法找到和执行 STRING_SPLIT 函数。 SQL Server 2016 (13.x) 之前的早期 SQL Server 版本中处于跟踪标志 4199 下的修补程序现在默认情况下会启用。 具有兼容性模式 130。 跟踪标志...
split_part(str, delimiter, partNum) - Splits str by delimiter and return requested part of the split (1-based). If any input is null, returns null. if partNum is out of range of split parts, returns empty string. If partNum is 0, throws an error. If partNum is negative, the pa...
spring.datasource.url:"jdbc:mysql://localhost:3306/chinotan?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true"spring.datasource.username:root spring.datasource.password:spring.datasource.driver-class-name:"com.mysql.cj.jdbc.Driver"logging.level.com.shyroke.mapper:deb...
/* Concatenate String function can be created, using for xml path*/ DECLARE@tmptabTABLE(idINT,strCol NVARCHAR(4000)) INSERTINTO@tmptab( id, strCol ) SELECT*FROMuf_SplitStrByXQuery('a,b,c',',') --SELECT * FROM @tmptab SELECTstuff((SELECT','+strColFROM@tmptabORDERBYidFORXML PATH('...
创建RDDval lineRDD=sc.textFile("hdfs://node01:8020/person.txt").map(_.split(" "))//RDD[Array[String]]3.定义caseclass(相当于表的schema)caseclassPerson(id:Int,name:String,age:Int)4.将RDD和caseclass关联 val personRDD=lineRDD.map(x=>Person(x(0).toInt,x(1),x(2).toInt))//RDD...
--LEN ( string_expression ) selectlen('ddd'); --3 selectlen('ddd'); --5 selectlen('ddd ddd'); --7 selectlen('测试') --2 /*字符串按分隔符位置截取函数*/ IFOBJECT_ID('poscopy')ISNOTNULL dropfunctionposcopy GO createfunctionposcopy( ...