SQL is generally used for modifying and querying information in Relational Database Management Systems (RDBMS). PL SQL comes to plug in the shortcomings of SQL and enhances the characteristics of SQL. While working with Oracle Database, PLSQL is the preferred choice for developing good code altho...
1.1. What Is PL/SQL? Pick up most any reference book about PL/SQL and you'll read that it is Oracle's "procedural extension to Structured Query Language (SQL)." If that definition doesn't help much, consider what it assumes you know: ...
PL/SQL block PL/SQL Engine Database Server I am mentioning some advantages of PL SQL as follows that suffices the importance and usage of it- You get better performance, as SQL is executed in bulk rather than a single statement It gives High Productivity ...
在plsql/developer的命令窗口执行sql脚本的命令是@+路径。 命令窗口,如下: 1.在指定位置创建.sql文件 2-1.输入@,点击回车,选择.sql文件 2-2.或者@加路径
PLSQL files mostly belong toOracle Database. A.PLSQLfile containsPL/SQL(Procedural Language/Structured Query Language) code, which is an extension of SQL used in Oracle databases. These files typically store procedures, functions, triggers, and other PL/SQL blocks that extend the functionality of...
Native compilation is turned on and off by a separate initialization parameter,PLSQL_CODE_TYPE, rather than being one of several options in thePLSQL_COMPILER_FLAGSparameter, which is now deprecated. See Also: "Compiling PL/SQL Code for Native Execution" ...
plsql很方便我们执行sql。下面就简单介绍我常用的几种(当然每次svn的分支也可以ant脚本自动执行某个文件下的所以sql文件) 首先打开plsq的命令窗口 1)执行sql文件(可以把需要执行的sql放一个文件中) 输入@'' 在单引号中输入sql文件的路径既可,比如D:\db下的jbpm.oracle.sql文件,见下图(sql文件内容是select * ...
“SQL is designed based on relational algebra and tuple relational calculus, SQL consists of many types of statements, which may be informally classed as sublanguages, commonly: a data query language (DQL),[a] a data definition language (DDL),[b] a data control language (DCL), and a data...
SQL Join examples for Non Equi join : Consider 2 table which as given above.one is Employee table and other is department table. Question: Tell me the department which is not allocated to any of the Employee. Consider there are 2 tables. Employee table which has following columns: ...
Oracle XML DB Resource View API (SQL) ResourceView is a publicXMLTypeview that you can use to perform path name-based queries against all resources in a database instance. This view merges path-based queries with queries against relational and object-relational tables and views. SeeChapter 15...