select count into

MySQL stored procedure SP explanation 1. Introduction to stored procedures The commonly used Operating Database Language SQL statements must be compiled and then executed before execution. the Stored Procedure (Stored Procedure) is a set of SQL

1. query number & amp; 20540; type data: SELECT * FROMtb_nameWHEREsum & gt; 10 1. query numeric data: SELECT * FROM tb_name WHERE sum> 100; Query predicate:>, =, ,! =,!> ,! , = 2. query strings SELECT * FROM tb_stu WHERE sname = 'Liu' SELECT *

Mysql paging stored procedure Drop procedure if exists pr_pager; create procedure pr_pager (IN p_table_name VARCHAR (1024), IN p_fields VARCHAR (1024), IN p_page_size INT, IN p_page_now INT, IN p_order_string VARCHAR (128 ), IN p_where_string

Statistical analysis-mysql cursor bitsCN.com Statistical analysis-mysql cursor The statistical analysis module of the project uses stored procedures to collect statistics on data to meet the needs of users to view report data. I used less mysql

In the MYSQL stored procedure, the table name uses the variable bitsCN.com. Use variables for table names in MYSQL stored procedures # This stored procedure defines several input parameters with the prefix para _ # This part of the stored

Syntax differences between MySQL and Oracle detailed comparison of some simple commands of bitsCN. comOracle and mysql 1) SQL> select to_char (sysdate, 'yyyy-mm-DD') from dual; SQL> select to_char (sysdate, 'hh24-mi-SS') from dual; Mysql> select

This article is a summary of Oracle Support's problems in the 11GR2RMAN backup process. Common RMAN problems in 11GR2: A few structural changes in 11gR2 have a wide impact on RMAN settings. the SnapshotBackup (Snapshot Backup) control file location

Runstats can compare two different methods for the same thing to find out who is better. We only need to provide two different methods, and runstats is responsible for the rest of the tasks. Runstats is only a measurement of three elements: 1. Time

1. Use the OracleClient component to connect to Oracle The System. Data. OracleClient. dll component (ADO. Net Component) in the. Net Framework provides great convenience for connecting to and using Oracle databases. 1. Use the client network

Actual Example of drop table and purge in oracle Database: create or replace procedure pro_droptable IS cursor cur is select table_name from user_tables where table_name like 'temptable % '; drop_ SQL varchar2 (1000); table_number number; begin

Oracle trigger 5-Instead of trigger Oracle trigger 4-database event trigger http://www.bkjia.com/database/201304/201423.html The Instead of trigger can be used to insert, update, delete, and merge tables in a view composed of more than one table.

Various database software for SQL support recently is learning the database course, although SQL has a unified standard, but each database software for SQL support is different, machine encountered a variety of problems, record it on this post. 1.

Dynamic SQL of stored procedures in the ORACLE package --- create or replace package test_pkg is g_public_flag varchar2 (1); function test_function (p_param1 varchar2, p_param2 varchar2) return varchar2; function hello_function (p_param3 varchar2)

Mysql determines whether an index exists. The mysql drop index statement does not support the if exists condition. In SQL, the index is deleted first and then created, if this index is not found in the database, an error will be reported, resulting

MySQLCreate a stored procedure (1). Format Format of MySQL stored PROCEDURE creation: create procedure process name ([process parameter [,...])[Features...] process body Here is an example: Mysql> DELIMITER // Mysql> create procedure proc1 (OUT s

Oracle dynamic SQL statements Dynamic SQL return cursor: Create or replace procedure partition (p_regioncode in number, p_pscode in number, p_outputcode in number, p_pollutantType in number, Region in varchar2, p_attencode in varchar2, p_checkstatus

  MySQL stored procedure: MySQL Stored Procedure   Stored procedures are an important function of database storage. However, MySQL did not support stored procedures before MySQL 5.0, which greatly compromises the application of MySQL. Fortunately,

If Oracle implements data that does not exist, data is inserted. If data exists, data is updated (insertorupdate) The idea is to write a function that first queries data based on conditions. If data is queried, it is updated. If no data is queried,

Oracle limits the number of connections of an IP address in database management. It may limit the number of connections from an IP address to the database or the number of connections from a user to the database. To limit the number of connections

There are many requirements for batch operations in recent projects. The client sends a set of IDS separated by commas to the database, and the stored procedure needs to split them and process them one by one. There are many requirements for batch