Wednesday, 22 July 2015

Mysql insert into two tables in one query

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MySQL - Advanced Queries


  http://www.keithjbrown.co.uk/vworks/mysql/mysql_p8.php
Introduction Earlier in this series when we looked at SQL statements we were primarily concerned with either retrieving, changing or deleting values within the database and also manipulating the database structures. The classic example given when explaining Self-Joins (I read this in many different books when learning SQL) involves an 'Employees' table that stores the details of their supervisor as well

Inserting multiple rows in one SQL statement


  http://blog.bflarsen.com/?p=7
Updating indexes is often the slowest part of inserting rows into a table, and inserting several at one time only rebuilds the index once (after all the rows are added) rather than once per row. Why I used UNION ALL instead of UNION UNION ALL will offer significantly better performance than UNION, because the UNION command assumes that if there are duplicates they should be removed (mathematically speaking, the union of two sets includes only one copy of the overlapped region.) If you use UNION ALL, it keeps both copies of the overlapped region

  http://blog.sqlauthority.com/2012/08/29/sql-server-three-methods-to-insert-multiple-rows-into-single-table-sql-in-sixty-seconds-024-video/
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  http://php.net/manual/en/function.mysql-insert-id.php
There's also nothing wrong with the main competetive idea, which is for the database to supply a primitive sequence of non-repeating identifiers, typically integers. This is the only way I found to make this work so I can use my customer number and the record number to provide a truly unique customer number that is also useful

Insert Into SQL - Add Data (MySQL Tutorial)


  http://php.about.com/od/learnmysql/ss/mysql_data.htm
Share on Facebook Pin to Pinterest 3 of 4 Show All 1 Insert Into SQL - Add Data 2 SQL Update Command - Update Data 3 4 SQL Delete Statement - Removing Data 4 of 4 SQL Delete Statement - Removing Data Often you need to remove old information from your database. Share on Facebook Pin to Pinterest 1 of 4 Show All 1 2 SQL Update Command - Update Data 3 SQL Select Statement - Searching Data 4 SQL Delete Statement - Removing Data 2 of 4 SQL Update Command - Update Data Often it is necessary to change the data you have in your database

  http://www.arachnoid.com/MySQL/
NOTE: To save time and typing, readers are encouraged to copy the green entries from the example boxes and paste them into your MySQL command-line session: In this display, drag your mouse cursor across the phrase you want to capture, highlighting it. I've always thought that direct experience is a good way to inspire confidence in one's abilities, so we'll start out by creating a database and a table at the keyboard, by direct interaction with MySQL

sql - MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET - Stack Overflow


  http://stackoverflow.com/questions/861722/mysql-insert-into-table-values-vs-insert-into-table-set
For the feature you have shorter, faster-to-write code, increased readability, and the elimination of typos caused by mixing up your column order when writing your VALUES clause

MySQL :: MySQL 5.1 Reference Manual :: 13.2.6 LOAD DATA INFILE Syntax


  http://dev.mysql.com/doc/refman/5.1/en/load-data.html
If the field begins with the ENCLOSED BY character, instances of that character are recognized as terminating a field value only if followed by the field or line TERMINATED BY sequence. The LOCAL keyword affects where the file is expected to be found: If LOCAL is specified, the file is read by the client program on the client host and sent to the server

MySQL :: MySQL 5.5 Reference Manual :: 13.2.5 INSERT Syntax


  http://dev.mysql.com/doc/refman/5.5/en/insert.html
An INSERT statement that acts on a partitioned table using a storage engine such as MyISAM that employs table-level locks locks all partitions of the table. The columns for which the statement provides values can be specified as follows: You can provide a comma-separated list of column names following the table name

php - MySQL Insert into multiple tables? (Database normalization?) - Stack Overflow


  http://stackoverflow.com/questions/5178697/mysql-insert-into-multiple-tables-database-normalization
INSERT IGNORE INTO users (username, password) SELECT username, password FROM tmp; Here "IGNORE" can be used, if you allow some users already to be inside. If however you decide "either all queries finish, or none finish - I do not want rows in some tables but no matching rows in others, I always want my database tables to be consistent", you need to wrap all statements in a transaction

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