how to load data into multiple tables using sql loader
how to load data into multiple tables using sql loader
Discover how to load data into multiple tables using sql loader, include the articles, news, trends, analysis and practical advice about how to load data into multiple tables using sql loader on alibabacloud.com
MySQL uses the SQL statement TRUNCATETABLE to quickly clear the data of a data table, so that the data table is cleared without retaining logs. Although TRUNCATETABLE is the same as a DELETE statement without WHERE, TRUNCATETABLE is faster and consumes less resources. TRUNCATETABLE does not record logs, so it cannot be
In powerdesiger, find edit current DBMS under database in physical data model, and select SCRIPT> SQL> format. There is a casesensitivityusingquot
E. Its comment is "determines if the case sensitivity for identifiers is managed using double
Quotes indicates whether double
This article is original article, reprint please indicate the source! My blog address: http://www.cnblogs.com/txwdAs a result of the work, for more than a year now for this has not written SQL Server storage process, has been a little rusty. Recently work has a table of data needs to be updated regularly, turn over the previously written storage process, in this
PHPcode lt ;? Php $ con = mysql_connect ( quot; localhost quot;, quot; root quot;, quot;); if ($ con) {mysql_select_db ( quot; about using SQL statements to create tables in php
PHP code
Please look for the problem. The error "create error" is reported all the time. but after the
-- SQL deletes the Foreign 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
You can obtain the desired data table information from the system table sysobjects in the database. The specific SQL statement is as follows:
Select name from sysobjects where type = 'U ';
Because the system table sysobjects stores all database objects, type indicates the types of various objects, including:U = User tableS
-- 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
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
-- 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
methods for analyzing data using univariate variables in Excel tables
1. Open the workbook, create the worksheet, and enter the data in the worksheet, and enter the formula "=sum (B3:B9)" In
" originally added in step 3rd, because it contains subtotals for each column, you must modify the formula (the total number divided by 2) to correctly count the results.
3. Using key combinations, users can enter the same data or formula at once in multiple cells.
Summary
successfully, you must revise the UNION all view. It is still recommended that you use SQL-DMO to complete this task: Change the TEXT property of the VIEW object using the Alter method. Exporting the list of partitions to be included in the view definition from the metadata table described above is the best approach.
Merging Partitions
On the surface, it seems
-21dd68e19207 ' ) and (cardgiftmoney> 0 or cardmoney>0) DECLARE @rowcount int DECLARE @allcount int Set @rowcount =1 Set @allcount = (select COUNT (1) from hl11.db O.t_shopserlog where createtime>= ' 2017-07-01 ' and createtime and Shopcode in ( ' ee034cb5-ef4b-4e5b-928d-2d3f733d5b4a ', ' 667557e2-d5a9-43fe-a18a-21dd68e19207 ' ) and (cardgiftmoney>0 or cardmoney>0)) DECLARE @Id INT DECLARE @ShopCode uniqueidentifier DECLARE @CustCode uni
If you import data from an Excel table directly into a database, you should first read the data in Excel.
In order to achieve code reuse, the object is used, and the end result is to get a List such as list
Just a little bit of thought before the code:
A 1.excel table must have a header, and the values of each column
execute multiple scripts on SQL Server: Sqlcmd: Use the sqlcmd utility, which can be used at a command prompt, in the Query Editor in SQLCMD mode, in a Windows script file, or in the operating system of a
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