transferred from: http://blog.csdn.net/lifuxiangcaohui/article/details/40588929Hive is based on the Hadoop distributed File system, and its data is stored in a Hadoop Distributed file system. Hive itself does not have a specific data storage format and does not index the data, only the column separators and row separat
Data room charging system-stored procedure and stored procedure
I wrote a view and a trigger on my blog two days ago. I didn't want to write a stored procedure. I just wanted to use it. however, I encountered a lot of problems in the process of using them. If I don't make a conclusion, I will still use them incorrectly
[Data Center reconstruction]-view, trigger, use of stored procedure, trigger Stored Procedure
In the data room charging system, it is very troublesome to write multiple SQL statements to query multiple tables. To facilitate code writing, code decoupling and, we reference views, triggers, and
Mysql inserts data in batches using stored procedures and mysql stored procedures
Recently, we need to test the performance of adding, deleting, modifying, and querying more than data records in a single mysql table. Because there is no ready-made data, we construct it by ou
SQL SERVER backup database stored procedures, backup data stored procedures
SQL Server batch export Stored Procedure
In the query analyzer, right-click "database --" and choose "task". In the pop-up menu, select "generate script"-- "" Next "--" select the database in which you want to store the
SQL stored procedures update data through multiple IDs, SQL stored procedures
The following is an example:
I want to add 1 to the name of some brands (that is, Brand_Name), and Brand_ID is the primary key. The SQL statement is easy to implement. But how can I write the stored procedure?
The error code is as follows:
//
Mysql stored procedures judge repeated data not inserted, mysql stored procedures
Mysql Stored Procedure
The following is a common scenario: to determine whether a column in a table has a value, if an operation exists
Note that if exists cannot be used;
Exists can be used after where or in create object, but it can
Mysql Stored Procedure example (insert data to different sub-tables), mysql Stored Procedure
USE test;Drop procedure if exists test. generate_records;Delimiter $Create procedure test. generate_records (in v_count bigint, in v_phone bigint)BEGINSet @ vCount = v_count;Set @ vPhone = v_phone;Set @ vLoopCount = 3;Set @ I = 1;
While (@ I DoSet @ vPhone = @ vPhone + 1;
Four, modify the data stored procedures
---------------------创建存储过程--------------------- create procedure ModPro @StuID int, @StuName varchar(10) as update 学生基本信息表 set StuName=@StuName where StuID=@StuID
-------------执行存储过程------------------------- exec ModPro 2,'四毛' ---------------JAVA调用存储过程-------------------- import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws
In WEB applications, should a large amount of static data be stored in the database or directly stored in the PHP service layer? It means that a WEB application with a large amount of static data, such as a WEB game with a MYSQL-PHP-JS architecture, it has a large amount of relatively static
In a Web application, should a large amount of static data be stored in a database or stored directly in the PHP business layer?
This means that a Web application with a large amount of static data, such as a MYSQL-PHP-JS-architecture web game, has a large amount of relatively static
Note that when the call function is used to call a stored procedure in a cell, the stored procedure is executed, and the result data set is returned. Only single column data can be returned. If the stored procedure returns multiple
Note that when the call function is used to
Iii. stored procedures for deleting data
------------------Stored Procedures--------------------------
drop table 学生基本信息表 create table 学生基本信息表 ( StuID int primary key, StuName varchar(10), StuAddress varchar(20) ) insert into 学生基本信息表 values(1,'三毛','wuhan') insert into 学生基本信息表 values(2,'三毛','wuhan') create table 学生成绩表 ( StuID int, Chinese int, PyhSics int foreig
Mysql Stored Procedure (batch generation of Forum posts, replies, topics, and other data), mysql Stored Procedure
USE Database Name 1;Drop procedure if exists database name 1. Stored PROCEDURE name;Delimiter $Create procedure database name 1. Stored PROCEDURE name (in v_coun
Recently, SQL stored procedures have been found to greatly reduce the amount of code in the program.
In the future, we need to consider using more stored procedures.
Two tips:
1. Use stored procedures to dynamically create data tables.
/*Process function: dynamically create a data
The dataset data comes from the stored procedure.SQLThe statement must be compiled before execution. The stored procedure is compiled.SQLStatement. The application can be called directly when needed, so the efficiency is relatively high. Stored procedures can be written using flow control statements. With great flexibi
Oracle data types, functions and stored procedures, and oracle Data TypesString typeFixed Length: char nchar n indicates Unicode encodingVariable Length: varchar2 nvarchar2Number Type: number (P, S) P: integer digits, S decimal placesIntegerBINARY_FLOAT Single Floating PointBINARY_DOUBLE Double Floating PointFLOAT (N) floating point number N indicates precisionDA
Mysql using a stored procedure, you insert a batch of data, you can insert thousands of data, as long as you use the loop statement, it is OK. mysql ( 5.0 above) in sqlyog Span style= "line-height:33px;font-family: Song Body; font-size:19px" (Version is 8.32 " How to establish a stored procedure: 1,NBSP
Vi. adding data to stored procedures
------------存储过程-------------------- create procedure InsertPro @StuID int, @StuName varchar(10), @StuAddress varchar(20) as insert into 学生基本信息表 values(@StuID,@StuName,@StuAddress)
-----------调用存储过程--------------- exec InsertPro 5,'555','555' -----------在JAVA中执行------------- import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws
for reading data, writing data is completed by editor objectParameter one: Save the file name of data, do not add suffix, automatically generate Usrmsg.xml file, exist/data/data/package name/shared_prefs Directory/ /Parameter two: private modeSP = getsharedpreferences ("Us
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