MERGE(合并) 英文是Oracle上数据库SQL参考查询 Purpose 目的: Use theMERGEstatement to select rows from one or more sources for update or insertion into a table or view. You can specify conditions to determine whether to update or insert into the target table or view. 使用MERGE语句选择行从一个...
在以前版本的Oracle数据库中,当您在包含该MERGE INTO语句的应用程序上创建Oracle虚拟专用数据库策略时,由于存在虚拟专用数据库策略,该MERGE INTO语句将被阻止并出现ORA-28132: Merge into syntax does not support security policies错误。从Oracle Database11g第2版(11.2.0.2)开始,您可以在包含MERGE INTO操作的应用程序...
MySQL中常用的三种插入数据的语句: insert into表示插入数据,数据库会检查主键,如果出现重复会报错; replace into表示插入替换数据,需求表中有PrimaryKey,或者unique索引,如果数据库已经存在数据,则用新数据替换,如果没有数据效果则和insert into一样; insert ignore表示,如果表中如果已经存在相同的记录,则忽略当前新数据...
C Oracle and Standard SQL D Oracle Regular Expression Support E Oracle SQL Reserved Words and Keywords F Extended Examples Index Purpose Use theMERGEstatement to select rows from one or more sources for update or insertion into a table or view. You can specify conditions to determine whether to...
In previous releases of Oracle Database, when you created an Oracle Virtual Private Database policy on an application that included theMERGEINTOstatement, theMERGEINTOstatement would be prevented with anORA-28132: Merge into syntax does not support security policieserror, due to the presence of the...
您可以使用MERGE INTO语句对一个表同时进行INSERT和UPDATE等操作。 限制条件 不支持目的表包含子查询。 不支持UPDATE和DELETE中包含WHERE语句。 说明 可以将WHERE语句修改为WHEN MATCHED [ AND condition ]。 不支持串行化隔离级别。 不建议在执行MERGE INTO操作的同时对目标表进行并发更新,这可能导致严重的后果,执行时...
The following illustrates the syntax of the Oracle MERGE statement: MERGE INTO target_table USING source_table ON search_condition WHEN MATCHED THEN UPDATE SET col1 = value1, col2 = value2,... WHERE <update_condition> [DELETE WHERE <delete_condition>] WHEN NOT MATCHED THEN INSERT (col1,co...
For moreMERGE INTOexamples, seeUpdate Iceberg table data. View related pages Abstracts generated by AI Dms › oracle-to-aurora-postgresql-migration-playbook MERGE statement Perform Oracle MERGE statements, conditionally insert, update, delete rows, handle insert conflicts, redirect operation as update,...
首先,需要明确的是,MySQL 数据库本身并不直接支持标准的 SQL MERGE 语句,这种语句通常用于在 SQL Server、Oracle 等数据库中,用于将源表中的数据插入到目标表中,如果目标表中已存在相同的记录,则更新这些记录。 2. 分析用户遇到的merge sql错误类型和具体错误信息 由于MySQL 不支持 MERGE 语句,用户遇到的 "merge...
最近和一个同事(以前是oracle的)做项目,发现他写了个牛逼的sql(或者说自己见识太短浅了),特此膜拜下 类似这样的 MERGE INTO test1 a USING all_objects b ON (a.object_id = b.object_id) WHEN MATCHED THEN UPDATE SET a.status = b.status