SQL Server: combining multiple rows into one row DECLARE @combinedString VARCHAR(MAX)AND ISSUE = 19602 SELECT @combinedString as S 浏览9提问于2019-10-14得票数 0 回答已采纳 2回答 为组合选择postgresql 、、、 将这些is的唯一组合插入到另一个表中
我在这里找到了一个将多行合并为一行的帖子。SQL Server: combining multiple rows into one row DECLARE @combinedString VARCHAR(MAX) SELECT @combinedString 浏览9提问于2019-10-14得票数 0 回答已采纳 1回答 将多行数据合并为一行- SQL Server 、 我要做的就是将多行中的一些数据连接到一个基于学生和模块...
本文为您介绍,如何使用SQL实现多行数据合并为一行数据。 示例数据 class gender name 1 M LiLei 1 F HanMM 1 M Jim 1 F HanMM 2 F Kate 2 M Peter 使用示例 示例1:将class相同的name合并为一行,并对name去重。去重操作可通过嵌套子查询实现。 SELECT class, wm_concat(distinct ',', name) as names...
The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row. A MERGE statement cannot UPDATE/DELETE the same row of the target table multiple times. Refine the ON clause to ensure a target row matches at m...
Specifies that the rows matching rows in target_table are deleted.<merge_not_matched>Specifies the values to insert into the target table.( column_list )A list of one or more columns of the target table in which to insert data. Columns must be specified as a single-part name, or else ...
For more information, see Rules for MERGE statements. source-values VALUES values-single-row or values-multiple-row Specifies the values for a set of rows as a result table to be merged into the target. values-single-row specifies a single row of source data. values-multiple-row specifies ...
Specifies that the rows matching rows in target_table are deleted.<merge_not_matched>Specifies the values to insert into the target table.( column_list )A list of one or more columns of the target table in which to insert data. Columns must be specified as a single-part name, or else ...
-- Delete all target rows that have no matches in the source table. > MERGE INTO target USING source ON target.key = source.key WHEN NOT MATCHED BY SOURCE THEN DELETE -- Multiple NOT MATCHED BY SOURCE clauses conditionally deleting unmatched target rows and updating two columns for all othe...
can be a derived table that uses the Transact-SQLtable value constructorto construct a table by specifying multiple rows. For more information about the syntax and arguments of this clause, seeFROM (Transact-SQL). ON <merge_search_condition> Specifies the conditions...
Copy constraints and indexes from one database to another Copy same data into multiple rows copy stored procedures from one schema to another in a sql server database through batch Copy table from one server to another Copy table Structure including primary keys, index etc. Copy tables with all...