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...
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('.','nvarchar(max)')ASdata FROM@t...
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_ta...
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 ...
在SQL中,组合string_split列结果可以通过使用字符串聚合函数来实现。字符串聚合函数可以将多个行的值合并为一个字符串,并使用指定的分隔符进行分隔。 在SQL Server中,可以使用STUFF和FOR XML PATH('')函数来实现字符串聚合。具体步骤如下: 使用STRING_SPLIT函数将字符串拆分为多个行。例如,将字符串'apple,banana,or...
('connector'='datagen','rows-per-second'='1','fields.click_params.length'='3','fields.log_id.min'='1','fields.log_id.max'='10');CREATETABLEsink_table(s_idBIGINT,s_paramsSTRING,c_idBIGINT,c_paramsSTRING)WITH('connector'='print');INSERTINTOsink_tableSELECTshow_log_table.log_id...
nohup /export/server/hive/bin/hive --service hiveserver2 2>&1 > /tmp/hive-hiveserver2.log &