if exists

Yesterday, the Dragon Boat Festival, the evening when a phone call, my friend's company, the database was two work not long phper to break, the specific is to put a field value, to the whole table into a name, of course, this is can be configured to

drop procedure if exists pro_rep_shadow_rs;Delimiter |------------------------------------Rep_shadow_rs--Used to process information additions, updates, and deletions--Update only data that hasn't been done since last time--According to the

SQLServer checks whether the object exists and does not exist. 1 checks whether the database has SQL code ifexists (select * fromsys. databaseswherename 'database name') dropdatabase [database name] ifexists (select * fromsys. databaseswherename

001 set @ Prov_Code: = 32; 002 set @ Prov_Name = "Provincial/Municipal Departments"; 003 set @ Area_Code: = 3201; 004 set @ Area_Name = "Municipal Bureau "; 005 www.2cto.com 006 007 SET FOREIGN_KEY_CHECKS = 0; 008 -- ---------------------------- 009

# ********** First test, procedure **********# Use testprocedure; Delimiter // Create procedure simpleproce1 (Out par1 INT)BeginSelect count (*) into par1 from proce;End// Delimiter;Call simpleproce1 (@ ); Select @; # only one row can be retrieved

1. File Package DownloadHttp://pan.baidu.com/s/1qW9DHYc2. Installation- - - I/usr/local/mysql/---/usr /local/MySQL/lib/plugin/3. Generating functionsDROP FUNCTION IF EXISTS' Redis_connect ';DROP FUNCTION IF EXISTS' Redis_close ';DROP FUNCTION IF

MySQL 5.0 Stored Procedure learning Summary 1. Create a stored procedure1. Basic Syntax:Create procedure sp_name ()BeginEnd2. parameter transfer Ii. Call the Stored Procedure1. Basic Syntax: Call sp_name ()Note: The stored procedure name

/*************************************** ************************************** * Name: MD5 Algorithm Implementation of T-SQL * Author: Rambo Qian * Create Date: 2003-04-10 * Last modified by: Rambo Qian * Last update date: 2003-04-16 * Version: v1.0

MD5 Encryption Go If exists (select * From DBO. sysobjects where id = object_id (n' [DBO]. [md5_m_onbits] ') and xtype in (n'fn', n'if', n'tf '))Drop function [DBO]. [md5_m_onbits]Go**************************************** ***************************

/*Navicat MySQL Data TransferSource server:206 Docker MySQL 13306Source Server version:50720Source host:192.168.7.206:13306Source Database:kafkamonitorTarget Server Type:mysqlTarget Server version:50720File encoding:65001Date:2018-05-05

About the multi-level menu bar or the authority of the Department of the hierarchy of the tree traversal, Oracle has connect by to achieve, MySQL does not have such a convenient way, so MySQL traversal data table is we often encounter headaches, the

Then on a blog to write, remember: Database curriculum design (i); First, the previous database structure and field types were fine-tuned: Here's a look at the entire development framework and the basic steps I've envisioned: Development framework:

For tree traversal of multiple levels of menu bar or lower-level departments in the permission system, connectby is used in oracle, and mysql does not have such a convenient way, therefore, it is a common headache for us to traverse data tables in

Preface: Preface: For tree traversal of multiple levels of menu bar or lower-level departments in the permission system, connect by is available in oracle, and mysql does not have such a convenient way, therefore, it is a common headache for us to

compilation configuration file for GCC (Spec files) 3.15 Configuring external tool programs and Parameters [Adie: This article was originally a section of the GCC Handbook, and 3.15 is the number in the manual.] GCC is a driver-driven program.

If the scheduled task information is logged with memory, the scheduled task information is lost after the app restarts. For example, user A through the system Setup 1 hours after the z operation, set up, because the system restarts, the

Quartz provides the ramjobstore and JDBC Jobstore two ways to job,ramjobstore the job task into memory, fast, Jobstore in a database management, this article describes the Jobstore mode management job.When you use the JDBC Jobstore to manage the job,

1. calculate the average mathematical score of a class. (1) selectsum (math) count (math) as mathematical average score fromstudent; (2) selectavg (math) as mathematical average score fromstudent; (3) selectavg (name) as James average score 1.

Code: -whether the library exists if exists (SELECT * from Master ...). sysdatabases where name=n ' library name ') print ' exists ' else print ' not EXISTS '-----------------to determine if the name of the table to be created exists if

springboot Integrated Quartz cluster mode (phase III) This issue will provide quartz clustering capabilitiesCluster Case Analysis: The previous issue of the mail delivery function, if the service needs to deploy multi-node, but the scheduled task