首先语句类似这样的形式： MERGE INTO (SELECT * FROM TEST_SERVER_LOG WHERE BUY_TIME>=TO_DATE(:...
MERGEINTO(select*fromtable) A using (<foreach collection="list"index="index" item="dto"open=""close="" separator="unionall">select#{dto.id}asid, #{dto.name}asname ...FROMDUAL</foreach>) Bon(匹配数据条件)WHENMATCHEDTHEN匹配逻辑WHENNOTMATCHEDTHEN不匹配逻辑 解析: MERGEINTO( 查询所有数据 ...
2 RETURNING AVG(salary) INTO : avg_salary; 16 rows updated. SQL> PRINT avg_salary; AVG_SALARY --- 2554.6875 十、MERGE INTO 将一个表中的行合并到另一个表中 MERGE INTO 语法: MERGE INTO table_name table_alias USING (table|view|sub_query) alias ON (join condition) WHEN MATCHED THEN UPDA...
INSERT(column_list)VALUES(column_values); 其中,table_name 指的是更新的表,using()里边的指的是数据来源表/视图/子查询结果集,condition指的是连接条件,如果满足连接条件,set 字段1=值1,字段2=值2.. 实例如下: MERGE INTO gdps_memberbank c USING dual ON (c.cltno= #cltno#) WHEN MATCHED THEN UPD...
INTO语句包括批处理管理,提供代码1.基本首先让回顾一下 MERGE INTO 语句的基本语法:MERGE INTO TargetTable AS targe 事务管理 批处理 隔离级别 SQL Server 中的 MERGE INTO优化 SQL Server 中的 MERGE 语句是一种强大的工具,用于根据源表中的数据更新目标。它能够插入新行,更新现有...
将表中数据和并(MERGE) 控制事务(TRANSACTION) 二、DML可以在下列条件下执行: 向表中插入数据 修改现存数据 删除现存数据 事务是由完成若干项工作的DML语句组成的。 三、插入数据 INSERT语句语法: INSERTINTOtable[(column [, column...])] VALUES(value[, value...]); ...
MERGE INTO people_target pt USING (SELECT :var_person_id AS person_id, :var_first_name AS first_name, :var_last_name AS last_name, :var_title AS title FROM DUAL) ps ON (pt.person_id = ps.person_id) WHEN MATCHED THEN UPDATE SET pt.first_name = ps.first_name, pt.last_name =...
MERGE INTO table_a ta USING(select #{item.a} as a,#{item.b} as b,#{item.c} as c, #{item.d} as c from dual) tb on (ta.a = tb.a) WHEN MATCHED THEN UPDATE set ta.b=tb.b, ta.c=tb.c, ta.d=tb.d WHEN NOT MATCHED THEN insert( ...
sqlBuilder.append("MERGE INTO "); if(quoteTableName) { sqlBuilder.append(schema.getQuotedIdentifierString()) .append(tableName) .append(schema.getQuotedIdentifierString()); }else{ sqlBuilder.append(tableName); } sqlBuilder.append(" t1 USING ( \n\t SELECT "); ...
MERGE INTO TargetTable AS TGT USING SourceTable AS SRC ON TGT.Col1 = SRC.Col1 WHEN MATCHED AND SRC.Col2 IS NOT NULL THEN UPDATE SET TGT.Col2 = SRC.Col2 WHEN NOT MATCHED THEN INSERT (Col1, Col2) VALUES (SRC.Col1, SRC.Col2) WHEN NOT MATCHED BY SOUR...