使用该自定义函数,可以将逗号分隔的字符串拆分为列,如下所示: 代码语言:txt 复制 SELECT value FROM dbo.SplitStringToColumns('apple,banana,orange', ','); 以上是两种常用的方法来实现SQL Server字符串拆分为列的操作。这些方法可以帮助开发人员在处理包含多个值的字符串数据时更加灵活和高效。相关...
CREATEFUNCTIONfn_SplitStringToTable(@strVARCHAR(MAX),@delimiterCHAR(1))RETURNS@resultTABLE(valueVARCHAR(100))ASBEGINDECLARE@posINTWHILECHARINDEX(@delimiter,@str)>0BEGINSELECT@pos=CHARINDEX(@delimiter,@str)INSERTINTO@result(value)VALUES(SUBSTRING(@str,1,@pos-1))SELECT@str=SUBSTRING(@str,@pos+1,L...
左补足函数:lpad(string str, int len, string pad) 右补足函数:rpad(string str, int len, string pad) 分割字符串函数: split(string str, string pat) 集合查找函数: find_in_set(string str, string strList) 9. 窗口函数 分组求和函数:sum(pv) over(partition by cookieid order by createtime)有...
publicstaticvoidmain(String[] args) throws JSQLParserException {Stringsql ="SELECT name,SUM(CASE WHEN sb.sblb = '1' THEN 1 ELSE 0 END) AS 待验证, SUM(CASE WHEN sb.sblb = '2' THEN 1 ELSE 0 END) AS 通过,SUM(CASE WHEN sb.sblb = '3' THEN 1 ELSE 0 END) AS 失效 FROM SBMP...
(inputColumn: String, outputColumn: String)(f: (A) ⇒ TraversableOnce[B])(implicit arg0: scala.reflect.api.JavaUniverse.TypeTag[B]) 返回值是dataframe类型,这个 将一个字段进行更多行的拆分 df.explode("name","names") {name :String=> name.split(" ")}.show(); 将name字段根据空格来拆分,...
TheSTRING_SPLITfunction isn't available.TheSTRING_SPLITfunction is available under compatibility level 130 or above. If your database compatibility level is lower than 130, SQL Server won't be able to find and executeSTRING_SPLITfunction.
C. Use SUBSTRING with a character string The following example shows how to return only a part of a character string. From thedbo.DimEmployeetable, this query returns the family name in one column with only the first initial in the second column. ...
GaussDB T不支持Oracle PL/SQL数据类型STRING。使用VARCHAR来处理该数据类型。 图7 输入:STRING 图8 输出:STRING LONG 数据类型LONG迁移为TEXT。 输入:LONG CREATE OR REPLACE FUNCTION fn_proj_det ( i_proj_cd INT ) RETURN LONG IS v_proj_det LONG; BEGIN SELECT proj_det INTO v_proj_det FROM project...
explode(expr) - Separates the elements of array expr into multiple rows, or the elements of map expr into multiple rows and columns. Unless specified otherwise, uses the default column name col for elements of the array or key and value for the elements of the map select explode(array(10,...
Compare the 3 columns and pick up the latest date Compare two tables on different server Compare two xml data by xquery in sql server Comparing columns with NULL values--Merge says unmatched when data is matched. Comparing two columns using a case statement Complex string_split / PIVOT challeng...