how to load data into multiple tables using sql loader

-- SQL creates a primary key for all user data tables in the database-- Primary key Description: The name is ID, and the data type is Integer auto-increment. -- Query all constraints of the current database before creationSelect * From information_schema.key_column_usage

directory MongoDB Study Notes (1) Introduction and installation of MongoDBMongoDB Study Notes (2) use the samus driver to perform basic data operationsMongoDB learning notes (3) using jqgrid tables to operate MongoDB data in MVC ModeMongoDB learning notes (4) describe the

1. Query table name:SELECT table_name from User_all_tables;2. Assemble statistical SQL statements:1 >select ' SELECT ' | | table_name | | ' As TableName, COUNT (*) from ' | | table_name | | ‘ ; ' As Exectutesql from User_all_tables;2> select ' Select ' | | table_name | | ' As TableName, COUNT (*) from ' | | table_name | | ' Union ' as exectutesql from User_all_tables;3. Copy the assembled Exectutesql executionselect * from ( 第二步2> 执行的结果复制到这里 删除最后一个 un

Do not retrieve data from the entity table Sometimes we need to query data that cannot be obtained from any entity table, such as using number 1 as the result set or calculating the length of the string "ABC. Solution 1: Select 1 from t_employee // but there will be multiple 1 records, which are recorded accordin

',' | '); #! /Usr/bin/python#-*-Encoding: UTF-8 -*- ######################################## ######################################## #### # Name: SybaseIQ_LoadData.py # Describe: Load the data file to the Sybase IQ database using the Load table command. ######################################## ########################

-- SQL batch update all user data tables in the database with the field type tinyint as int -- Key notes:-- 1. query all xtype = '48' records in the system table syscolumns to obtain fields of the type [tinyint ].-- 2. If the field has a default index before updating the fie

Delete data tables in MYSQL using PHP $ Hostname = 'localhost '; $ Userid = 'user '; $ Password = 'password '; $ Dbname = 'dbname '; $ Connect = mysql_connect ($ hostname, $ userid, $ password ); Mysql_select_db ($ dbname ); $ Result = mysql_q

-- SQL deletes the primary keys of all user data tables in the database. -- Query all constraints of the current database before deletionSelect * from information_schema.key_column_usage Declare @ TableName nvarchar (250)-- Declare that the cursor mycursor1 is used to read all data