将多个表转换为一个表mysql databae

Question

I have a mysql database with hundreds of tables. I want to convert this into a single table, where the table name will be added to the records, meaning that for each row / data in a particular table, I will add a new field, where in this new field the value will be the table name. Is there any way to do this automatically, rather than I have to create a new field on every table and insert the table name manually, this will take year. The record that I have on this db is around 400000 records. Can mysqldump with a script do this? or any other way ?

Answer 1

My suggestion is to generate syntax of the form:

create table xxx as
    select t.*, 'table1' as TableName from table1 t union all
    select t.*, 'table2' as TableName from table2 t union all
    . . .

You can create the select statements using:

select concat('select t.*, ''', Table_Name, ''' as TableName from ', Table_Name, ' union all '
from Information_Schema.Tables

You can then put the create table line in front and remove the final union all .