PLSQL /* plsql编程 declare --声明变量 变量名 变量类型 变量名 变量类型 :=初始值 vsal emp.sal%type; --引用型的变量 begin --编写业务逻辑 end; */ declare i varchar2(10) :='张三'; begin dbms_output.put_line(i); end; --查询7369的工资 declare vsal emp.sal%type; begin --将查询出...
PL/SQL由于分为数据库PL/SQL部分和工具PL/SQL。对于客户端来说,PL/SQL可以嵌套到相应的工具中,客户端程序可以执行本地包含PL/SQL部分,也可以向服务发SQL命令或激活服务器端的PL/SQL程序运行。 §1.2.2 PL/SQL 可用的SQL语句 是ORACLE系统的核心语言,现在ORACLE的许多部件都是由PL/SQL写成。在PL/SQL中可以使用...
The %TYPE attribute is particularly useful when declaring variables that refer to database columns. You can reference a table and column, or you can reference a schema, table, and column, as the following example shows: my_dname scott.dept.dname%TYPE; --%TYPE SET SERVEROUTPUT ON DECLARE mN...
BASE_TABLE BEGIN BETWEEN BINARY_INTEGER BODY BOOLEAN BY CASE CHAR CHAR_BASE CHECK CLOSE CLUSTER CLUSTERS COLAUTH COLUMN COMMENT COMMIT COMPRESS CONNECT CONSTANT CRASH CREATE CURRENT CURRVAL CURSOR DATABASE DATA_BASE DATE DBA DEBUGOFF DEBUGON DECLARE DECIMAL DEFAULT DEFINITION DELAY DELETE DESC DIGITS D...
exists prior 06550. 00000 - "line %s, column %s:\n%s" *Cause: Usually a PL/SQL compilation error. *Action: 在SQL Developer中,我手动选择要执行的整个脚本。我知道上面的错误表明我不能在脚本中使用CREATE。我的问题是: 为什么我不能在那里创建一个临时表,以及 ...
42、5357617931821 70779-SORT ORDER BY1 5357617931 7302010TABLE ACCESS FULLA_CONTENT11639617931 7302010<1imii,>1Implicit use of the Fl OWN UM pseudo column 琵少空1 HE:匚 ES= "ftE:"对比一下优化后的 SQL语句:select "from(selecl rovnrnn ara_sp 1 it_pagE_rdkg ora_split_pagie_tb 1 * from...
CASE CHAR CHAR_BASE CHECK CLOSE CLUSTER CLUSTERS COLAUTH COLUMN COMMENT COMMIT COMPRESS CONNECT CONSTANT CRASH CREATE CURRENT CURRVAL CURSOR DATABASE DATA_BASE DATE DBA DEBUGOFF DEBUGON DECLARE DECIMAL DEFAULT DEFINITION DELAY DELETE DESC DIGITS DISPOSE DISTINCT DO DROP ...
Select * From TabName1 AS a Where Exists(Select * From TabName1 AS b Where b.编号=a.编号Group By编号having Count(*)>1) 6.MINUS关键字两个查询语句相减 SQL中有一个MINUS关键字,它运用在两个SQL语句上,它先找出第一条SQL语句所产生的结果,然后看这些结果有没有在第二个SQL语句的结果中。如果有...
You can omit a column from the Oracle INSERT statement if the column allows NULL values. Example - Using VALUES keyword The simplest way to create an Oracle INSERT query to list the values using the VALUES keyword. For example: INSERT INTO suppliers (supplier_id, supplier_name) VALUES (5000...
COUNT, DELETE, EXISTS, EXTEND, FIRST, LAST, LIMIT, NEXT, PRIOR, TRIM. 不能在SQL 语句中使用 EXTEND,TRIM不能用于Associative Arrays EXTEND, TRIM, DELETE 是过程,其它是函数 只有EXISTS 能用在本身是NULL的集合上 EXISTS, PRIOR, NEXT, TRIM, EXTEND, ...