在开发过程中,如果使用的是SQL Server 2016或更高版本,推荐优先考虑STRING_SPLIT方法。 序列图示例 在使用这种方法的过程中,可能会出现以下操作序列: Result SetSTRING_SPLIT FunctionEmployee TableResult SetSTRING_SPLIT FunctionEmployee TableInput Skills dataSplit into multiple rowsReturn rows of skills 结论 通过...
2. 使用 STRING_SPLIT 函数 从SQL Server 2016 开始,提供了STRING_SPLIT函数,可以轻松地将逗号分隔的字符串转换成行。该函数返回一个表,其中包含分解后的每个值。 示例代码 AI检测代码解析 CREATETABLEStudents(IdINTPRIMARYKEY,Name NVARCHAR(50),Subjects NVARCHAR(MAX));INSERTINTOStudents(Id,Name,Subjects)VALUES...
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...
DROPFUNCTIONdbo.Split GO CREATEFUNCTIONdbo.Split(@dataNVARCHAR(MAX),@delimiterNVARCHAR(5)) RETURNS@tTABLE(dataNVARCHAR(max)) AS BEGIN DECLARE@textXMLXML; SELECT@textXML=CAST('<d>'+REPLACE(@data,@delimiter,'</d><d>')+'</d>'ASXML); INSERTINTO@t(data) SELECTT.split.value('.','nvarch...
createFunction[dbo].[SpliteStringToList](@stringsvarchar(2000)) Returns@ReturnTableTable(IDvarchar(max)) As Begin Insert@ReturnTable selectsubstring(c,2,charindex(',',c,2)-2)asempnofrom ( selectsubstring(csv.emps,iter.pos,len(csv.emps))ascfrom ...
在SQL Server 2016 (13.x) 中,前兩個步驟必須在個別EXEC陳述式中執行,否則 SQL Server 會產生類似下列範例的錯誤: 輸出 Msg 13560, Level 16, State 1, Line XXX Cannot delete rows from a temporal history table '<database_name>.<history_table_schema_name>.<history_tab...
Rows inserted into existing pages (no new page allocation) to maintain index order are still fully logged, as are rows that are moved as a result of page splits during the load.It's also important to have ALLOW_PAGE_LOCKS turned ON for indexes (which is ON by default) for minimal ...
Rows inserted into existing pages (no new page allocation) to maintain index order are still fully logged, as are rows that are moved as a result of page splits during the load.It's also important to have ALLOW_PAGE_LOCKS turned ON for indexes (which is ON by default) for minimal ...
Rows inserted into existing pages (no new page allocation) to maintain index order are still fully logged, as are rows that are moved as a result of page splits during the load.It's also important to have ALLOW_PAGE_LOCKS turned ON for indexes (which is ON by default) for minimal ...
nohup /export/server/hive/bin/hive --service hiveserver2 2>&1 > /tmp/hive-hiveserver2.log &