如果把WITH后面换成SELECT,一点问题没有,但UPDATE就是报错,好奇怪,难道WITH这种间接地写法不能用于UPDATA。 一种说法是:“with必须紧跟引用的select语句,而不是delete,update,merge等” 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 (se...
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 and to prevent DDL operations that would conflict with the transaction. ...
The following Oracle DELETE statement would delete these records from the contacts table: DELETE FROM contacts WHERE contact_id >= 5000 AND contact_id < 6000. Or you could write the solution using the BETWEEN clause as follows: DELETE FROM contacts WHERE contact_id BETWEEN 5000 AND 5999;NEXT...
alias_name2 as (select2),--后面的没有with,逗号分割,同一个主查询同级别地方,with子 查询只能定义一次 … alias_namen as (select n) –与下面的实际查询之间没有逗号 Select …. 1.4 with使用例子: 最简单的使用方法: 如查询部门名称包含“A”的所有员工信息 --with clause with a as (select deptno ...
{ set until scn 1182684; recover standby clone database delete archivelog ; } executing Memory Script executing command: SET until clause Starting recover at 2016-02-18 14:31:03 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 11 is already on ...
DELETEFROMtable_nameWHEREcondition;Code language:SQL (Structured Query Language)(sql) In this statement, First, you specify the name of the table from which you want to delete data. Second, you specify which row should be deleted by using the condition in theWHEREclause. If you omit theWHERE...
Parallel DML(并行DML操作,如insert,update,delete等) Oracle 可以对DML操作使用并行执行,但是有很多限制。 如果我们要让DML操作使用并行执行,必须显示地在会话里执行如下命令: SQL> alter session enable parallel dml; 会话已更改。 只有执行了这个操作,Oracle 才会对之后符合并行条件的DML操作并行执行,如果没有这个设...
Deletes one or more lines of the SQL buffer ("*" indicates the current line). You can omit the space between DEL and n or *, but not between DEL and LAST. Enter DEL with no clauses to delete the current line of the buffer. The buffer has no command history list and does not re...
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 ...
Parallel DML(并行DML操作,如insert,update,delete等) Oracle 可以对DML操作使用并行执行,但是有很多限制。 如果我们要让DML操作使用并行执行,必须显示地在会话里执行如下命令: SQL> alter session enable parallel dml; 会话已更改。 只有执行了这个操作,Oracle 才会对之后符合并行条件的DML操作并行执行,如果没有这个设...