Create table in MySQL that matches another table?

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鱼传尺愫
鱼传尺愫 2020-12-07 16:33

I am using MySQL. I have a table called EMP, and now I need create one more table (EMP_TWO) with same schema, same columns, and same constraints. How can I do this?

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  • 2020-12-07 16:41

    If you want to copy only Structure then use

    create table new_tbl like old_tbl;
    

    If you want to copy Structure as well as data then use

    create table new_tbl select * from old_tbl;
    
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  • 2020-12-07 16:43

    Why don't you go like this

    CREATE TABLE new_table LIKE Select * from Old_Table;   
    

    or You can go by filtering data like this

    CREATE TABLE new_table LIKE Select column1, column2, column3 from Old_Table where column1 = Value1;   
    

    For having Same constraint in your new table first you will have to create schema then you should go for data for schema creation

    CREATE TABLE new_table LIKE Some_other_Table;
    
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  • 2020-12-07 17:00

    Create table in MySQL that matches another table? Ans:

    CREATE TABLE new_table AS SELECT * FROM old_table;
    
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  • 2020-12-07 17:04

    To create a new table based on another tables structure / constraints use :

    CREATE TABLE new_table LIKE old_table;     
    

    To copy the data across, if required, use

    INSERT INTO new_table SELECT * FROM old_table;  
    

    Create table docs

    Beware of the notes on the LIKE option :

    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:

    CREATE TABLE new_table LIKE original_table; The copy is created using the same version of the table storage format as the original table. The SELECT privilege is required on the original table.

    LIKE works only for base tables, not for views.

    CREATE TABLE ... LIKE does not preserve any DATA DIRECTORY or INDEX DIRECTORY table options that were specified for the original table, or any foreign key definitions.

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