Dienstag, 17. Mai 2016

Mysql create table like

Use LIKE to create an empty table based on the definition of another table , including any column attributes and indexes defined in the original table. The SELECT privilege is required on the original table. However, this new table is empty of any data. The resulting table is not empty. There is no original table in this case.


Then modify your MyTable, and copy your data back in. Then copy your data doing any migrations you need. Then you will drop the original table and do a rename on Mytable. To create new table in any existing database you would need to use PHP function mysql _query().


Creating Tables Using PHP Script. You will pass its second argument with a proper SQL command to create a table. The new table gets the same column definitions. All columns or specific columns can be selected.


Mysql create table like

If you create a new table using an existing table , the new table will be filled with the existing values from the old table. It is important to note that when creating a table in this way, the new table will be populated with the records from the existing table (based on the SELECT Statement). Officially pronounced “my Ess Que Ell” (not my sequel). CREATE TABLE AS SELECT inserts the data into the new table.


MySQL is a very popular, open source database. Summary: in this tutorial, we will discuss MySQL temporary table and show you how to create , use and drop temporary tables. Introduction to MySQL temporary tables. In MySQL , a temporary table is a special type of table that allows you to store a temporary result set, which you can reuse several times in a single session. Farther down the manual In MySQL 4. How to create database and tables in MySql using the terminal on UBUNTU.


Mysql create table like

Hello All, I have MySQL 4. I am trying to create a table in an existing database. I can use one of these statements. MySQL provides a variety of different table types with differing levels of functionality.


Both commands can be used in following scenario. You can copy or duplicate MySQL table to another table. Duplicating MySQL table is useful when you would like to run some experiments on the table , but want to have a backup of the table. Or in some scenarios, you would like to create a table with exact columns and indexes of an already existing table. MySQL - LIKE Clause - We have seen the SQL SELECT command to fetch data from the MySQL table.


Mysql create table like

We can also use a conditional clause called as the WHERE clause to. Live TV like never before Loading. Let’s imagine we need to transfer money from one account to another (classic example). But in addition to just transferring funds, we need to calculate fees. The developers decide to create a table to perform a complex calculation.


This tutorial shows you step by step how to use the MySQL SHOW TABLES command to list tables and views in a particular database. MySQL 数据库中,关于表的克隆有多种方式,比如我们可以使用 create table. Description: When creating tables LIKE another, the table name case is ignored. The main motivator is performance and I checked the tables itself and they are of type MyISAM. I was thinking that while moving the tables into new databases I could also change the table type to InnoDB which should see a site performance improvement.


This chapter provides an example on how to create a table using JDBC application. Before executing the following example, make sure you have the following in place − To execute the following example you can replace the username and password with your actual user name and password. Your MySQL or whatever database you are using is up and running.

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