pl sql sql statement ignored

Chapter 2 procedural performance tuning of PL/SQL applications I. Reasons for PL/SQL Performance problems When the execution efficiency of PL/SQL-based applications is low, it is usually caused by poor

In general PL/SQL programming, SQL can be used directly in DML and transaction-controlled statements, but DDL statements and system control statements cannot be used directly in PL/SQL, and it is possible to implement DDL statements and system control statements in

statements and dynamic SQL statements. The so-called static SQL refers to the SQL statement used in the Pl/sql block is clear at compile time, and the execution is to determine the object. Dynamic

In general PL/SQL programming, SQL can be directly used in DML and transaction control statements, but DDL statements and system control statements cannot be directly used in PL/SQL, to use DDL statements and system control statements in

When we want a query to take advantage of an index, we typically add an index hint to the query, like this Copy Code code as follows: SELECT Id,name from TB with (index (Ix_xttrace_bal)) where bal In a production environment, the optimizer generally does not consider other indexes because of the reason for this index, and that sometimes this index hint may cause the query to slow down After your test, it turns out that the relationship between the index hints caused the query

;Private_pkg.do_that;END;END;/ CREATE OR REPLACE PACKAGE BODYPrivate_pkgISPROCEDURE do_thisISBEGINDBMS_OUTPUT.put_line ('this ');END; PROCEDURE do_thatISBEGINDBMS_OUTPUT.put_line ('that ');END;END;/ Now you can run this public package without any problem: BEGINPublic_pkg.do_only_this;END;/THISTHAT However, if I try to call the sub-process of a private package in an anonymous block, the following error occurs: (Hey! You can't afford it! Hmm, it's interesting !) BEGINPrivate_pkg.do_this;END;/ ERRO

Many Oracle database developers prefer PL/SQL functions, storage, and so on to simplify the code. Recommended reading: Use PL/SQL to execute java storage to obtain the MAC address For example: Select empno, ENAME, DNAME, loc from emp, dept where emp. DEPTNO = DEPT. DEPTNO; Developers may think that such an

PL/SQL is an extension of Oracle's standard database language. Oracle has integrated PL/SQL into ORACLE servers and other tools, in recent years, more developers and DBAs have started to use PL/SQL. This article describes basic

Label:http://uule.iteye.com/blog/2061773 (source) Bulk Import Script : Open a Command Window > enter @ > It will let you select the file you want to import (you need to know the order of the imported files, Plsql will not automatically recognize this or write a script like LS) such as: @d:\svn\1.5 database Script \oracle\import2.sql http://blog.csdn.net/hbhgjiangkun/article/details/8208565 1, PL/

The results returned by the recent SQL query cause a ORA-06502 error to the PL/SQL variable. The error description is ORA-06502: PL/SQL: numeric or value error: character string buffer too small. obviously, the length of the character variable definition is not enough. It is

and executed on the client side rather than on the server. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/45/41/wKiom1PlNwmA_a-zAAEU6Rsr06Y709.jpg "title=" 1.png " alt= "Wkiom1plnwma_a-zaaeu6rsr06y709.jpg"/> Iv. PL/SQL The advantagesthe main advantages of PL/ SQL are:1. The integration of some process Con

): DECLARE Defining exceptions BEGIN Throw exception EXCEPTION 　　Catching and handling exceptions END; Mode two ( exception pass ): DECLARE Defining exceptions BEGIN Throw exception EXCEPTION 　　Do not handle exceptions END; Exception is passed to the caller If you want to handle exceptions in a PL/SQL block, you need to write handlers in the exception handling section. The exception handler is in the follo

Anonymous PL/SQL block reviewDECLARE (optional) defines the object to be used in a PL/SQL block BEGIN (MUST) EXECUTE statement EXCEPTION (optional) error-handling statement END; Must Anonymous blocks (starting with declare or begi

PL/SQL statement beautification click No response. View the following prompts PL/SQL Beautifier could not parse text. I am this time due to the SQL statement syntax error.At the toolbar

portion of the PL/SQL block is required. Notice that the end keyword is followed by a semicolon.③ Exception Handling section: This section is optional, the section uses the exception keyword to divide the executable part into two small parts, the previous program is the normal operation of the program, in the event of an exception to jump to the exception part of the execution.PL/

well configured, you can also consider using UNION, MINUS, and INTERSECT. After all, they are highly readable. (34) Optimize group: To improve the efficiency of the group by statement, you can filter out unnecessary records before group by. The following two queries return the same results, but the second query is much faster. Inefficient: select job, AVG (SAL) from emp group by job having job = 'President 'or job = 'manager' efficiency: select job,

Many oracle database developers prefer PLSQL functions and storage to simplify the code. Many oracle database developers prefer PL/SQL functions, storage, and so on to simplify the code. Many Oracle database developers prefer PL/SQL functions, storage, and so on to simplify the code. Recommended reading: Use

version is 11.2.0.4. SQL> select * from v $ version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit Production PL/SQL Release 11.2.0.4.0-Production CORE 11.2.0.4.0 Production TNS for Linux: Version 11.2.0.4.0-Production NLSRTL Version 11.2.0.4.0-Production Th

Pl/sql is Oracle's extension of the standard database language, Oracle has integrated PL/SQL into Oracle servers and other tools, and more developers and DBAs have started using Pl/sql in recent years, and this article covers

Oracle are written by PL/SQL. The following SQL statements can be used in PL/SQL: Insert, update, delete, select into, commit, rollback, savepoint. Tip: only the DML part in the SQL statement