http://www.itpub.net/thread-1585644-1-1.html 提到可以用MERGE: --wkc168 发表于 2012-3-2 13:28mergeintoc using (select*fromb) aon(c.g=a.h)whenmatchedthenupdatesetc.e=a.f http://stackoverflow.com/questions/5380559/update-statement-using-with-clause
The syntax for the UPDATE statement when updating one table in Oracle/PLSQL is: UPDATE table SET column1 = expression1, column2 = expression2, ... column_n = expression_n [WHERE conditions]; OR The syntax for the Oracle UPDATE statement when updating one table with data from another tabl...
UPDATE T_NAME SET PARAM_1=23, PARAM_2=true WHERE PARAM_7= 'something'1 0 oracle中的更新表语法 { UPDATE table-Name [[AS] correlation-Name] SET column-Name = Value [ , column-Name = Value} ]* [WHERE clause] | UPDATE table-Name SET column-Name = Value [ , column-Name = Value...
A table lock, also called a TM lock, is acquired by a transaction when a table is modified by an INSERT, UPDATE, DELETE, MERGE, SELECT with the FOR UPDATE clause, or LOCK TABLE statement. DML operations require table locks to reserve DML access to the table on behalf of a transaction ...
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without the return updated rows clause. The output in this listing shows that both updated and non- updated rows are returned from the SQL statement. The rule updates cells for the weeks 1, 52, and 53 only, but the output rows in Listing 9-9 shows rows with other column values such as...
private SQL areas associated withopen cursors. If the private SQL areas for all concurrently open cursors fillsyour available memory so that there is no space for a new SQL statement, thenthe statement cannot be parsed. Oracle Database returns an error indicatingthat there is not enough memory....
NO_ADAPTIVE_PLAN Syntax:NO_ADAPTIVE_PLAN Description:The NO_ADAPTIVE_PLAN hint instructs the optimizer to automatically change a plan on subsequent executions of a SQL statement. SQL?? HelloDBA.com> alter session set "_optimizer_adaptive_plans"=true; HelloDBA.com> exec sql_explain('select /...
Dynamic SQL statements can be built interactively with input from users having little or no knowledge of SQL.For example, your program might simply prompt users for a search condition to be used in the WHERE clause of a SELECT, UPDATE, or DELETE statement. A more complex program might allow...
Oracle SQLcl (SQL Developer Command Line) is a Java-based command-line interface for Oracle Database. Using SQLcl, you can execute SQL and PL/SQL statements interactively or as as a batch file. SQLcl provides inline editing, statement completion, command recall, and also supports existing SQL...