SQL>setserverout onSQL>DECLARE2gradeCHAR(1):='B';3appraisalVARCHAR2(20);4BEGIN5appraisal:=6CASEgrade7WHEN'A'THEN'Excellent'8WHEN'B'THEN'Very Good'9WHEN'C'THEN'Good'10WHEN'D'THEN'Fair'11WHEN'F'THEN'Poor'12ELSE'No
before assigning the value of an actual parameter to a formal parameter, PL/SQL converts the datatype of the value. For example, if you pass a number when the procedure expects a string, PL/SQL converts the parameter so that the
Control Structures of PL/SQL Control structures are probably the most useful (and important) part of PL/pgSQL.With PL/pgSQL's control structures, you can manipulate PostgreSQL data in a very flexible and powerful way. 1.Returning From a Function RETURN RETURNexpression; RETURN with an expressio...
PL/SQL(Procedural Language/SQL)是一种过程化语言,在 PL/SQL中可以通过IF语句或LOOP语句实现控制程序的执行流程,甚至可以定义变量,以便在语句之间传递数据信息,这样PL/SQL就能够 实现操控程序处理的细节过程,不像普通的SQL语句(如DML语句、 DQL语句)那样没有流程控制,也不存在变量,因此使用PL/SQL可以 实现比较复杂...
-- legal PL/SQL, but not for mod_plsql CREATE PACKAGE my_pkg AS PROCEDURE my_proc (val IN VARCHAR2); PROCEDURE my_proc (val IN NUMBER); END my_pkg; To avoid the error, name the parameters differently. For example: -- legal PL/SQL and also works for mod_plsql ...
SQL%BULK_EXCEPTIONS.COUNT: SQL%BULK_EXCEPTIONS(i).ERROR_INDEX is the number of the DML statement that failed. SQL%BULK_EXCEPTIONS(i).ERROR_CODE is the Oracle Database error code for the failure. For example, if a FORALL SAVE EXCEPTIONS statement runs 100 DML statements, and the tenth and...
topics around PL/SQL, SQL and general performance I just found a very interesting new capability calledSQL Transpiler. The name of the feature made me curious to find out more. As a result I put together information about it and illustrate the functionality and setup with a simple example. ...
For example,Oracle Forms applications frequently use SQL statements to test the values offield entries and do simple computations. By using PL/SQL instead of SQL, theseapplications can avoid calls to the database. 2.2 PL/SQL Unitsand Compilation Parameters ...
A simple tool for databases : SqlServer, MySql, Oracle, Postgres and SQLite mysqlpostgressyncparsesqlsql-serverdatabasecopysqlitetableconvertpostgresqloracleplsqltranslatecomparepgsqlsqlservermigratetsql UpdatedNov 11, 2024 C# Cognizant ADM Java FSE Curriculum. ...
指定一个或多个 SQL 或 PL/SQL 语句,每个语句都以分号终止。 ELSE 此关键字引入 CASE 语句的缺省情况。 示例 以下示例使用简单 CASE 语句将部门名称和地点指定给基于部门编号的变量。 DECLARE v_empno emp.empno%TYPE; v_ename emp.ename%TYPE; v_deptno emp.deptno%TYPE; v_dname dept.dname%TYPE; v_loc...