MySql learning experience-the stored procedure first look at the mysql Query article Reply statement:
# Query article replies-------------------------------- Procedure structure for 'sp _ select_reply_article'------------------------------Drop
What is the role of MySqldelimiter? bitsCN. comMYSQL after exporting an SQL statement:
DELIMITER $
Drop trigger if exists 'updateegopriceondelete' $
CREATE
TRIGGER 'updateegopriceondelete' after delete on 'mermerinfo'
FOR EACH ROW BEGIN
Delete from
Csharp: MySQL Stored Procedure using DAL, csharpstored
# Create a table: 20160907 drop table attendrecord; create table attendrecord (seq int not null primary key AUTO_INCREMENT, emp_no varchar (20) null, rdate datetime not null, rtime time not null,
Copy codeThe Code is as follows:-- ACL Tables-- Table structure 'aclresources'Drop table if exists 'aclresources ';Create table if not exists 'aclresources '('Rsid 'varchar (64) not null,'Access' int (4) not null default 0,'Desc' varchar (240) not
First, create a data table1, Think_auth_rule, rules tableID: Primary KEY,Name: Rule Unique identification,Title: Chinese name of the ruleStatus: 1 Normal, 0 disabled,Condition: Regular expression, NULL indicates existence on validation, non-null
Below to share the next SQL Server Building, building tables, building constraints skills, the following text has code.
--Before creating a school database: First, determine if the database exists, delete it if it exists, and create it if it does
Original address: http://www.cnblogs.com/wupeiqi/articles/5748496.htmlSample Data sql:/* Navicat Premium Data Transfer source server:localhost Source Server type:mysql Source server Version:5 0624 source Host:localhost source Database:sqlexam
MySQL sub-table scene analysis and simple sub-table operationWhy do you want to divide tablesFirst of all to know what the situation, only need to divide the table of individuals feel that the number of single-table records to the million to tens to
1. mysql commands the user to connect to the databaseMySQL command format: mysql-h host address-u user name-P user password(1) Connect to MySQL on this computerFirst open the DOS window, then enter the directory Mysql\bin, and then type the command
One, MySQL is installed in the configurationI was through the way Baidu cloud disk download. Recommended login Baidu Cloud Terminal, and then click the link below, select the version to install, unzip the installation.Http://www.h2ero.cn/pan/share/17
First, the View1. What is a view, function;A: Get a select result, and generate a new virtual table, and then you can continue to work on this new table;Note: When the old table data is updated, the virtual table data is updated as well; 2.
Install MySQL First:A. Word part:①networking network ②option Select ③port Port ④firewall firewall ⑤engine engine⑥standard Standard ⑦character character ⑧collation Proofing ⑨stirage StorageCreate drop Delete Comment Comment variables variableTwo.
A colleague summarizes the hive SQL optimizations Hive is a tool that generates a string resolution that conforms to SQL syntax to generate mapreduce that can be executed on Hadoop. Using hive to design SQL as many of the features of distributed
--whether the database existsIF exists(SELECT * fromMaster.. sysdatabasesWHEREName=N'Library name')PRINT 'exists'ELSE PRINT 'Not exists'-----------------determine if the name of the table to be created existsIF exists(SELECT *
Source: http://www.cnblogs.com/0351jiazhuang/p/4530366.htmlSQL is (structured query Language) Structured Query language abbreviation, the following Zhao yiming essay blog from the Basic knowledge, judgment object and application skills, introduced
What is a triggerSimply put, a table has something (INSERT, delete, update operation), and then automatically trigger the execution of several pre-written SQL statements;Features and functionsFeatures: The action that triggers the event and the SQL
database table schema design of tree-shaped structureIn the process of programming, we often use the tree structure to characterize some data related relations, such as enterprise subordinate departments, column structure, commodity classification,
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