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  • Status: Solved
  • Priority: Medium
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How to merge all multiple tables with a single blank table in SQL?

There are multiple tables, all tables are having same column names with different values, nd I have created one new table with same columns , but I want to put those all data in this new crated single table in SQL. There is no unique id in any of the table. I just want to merge all table data in one sinlge table.

Table names are - Andra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh,Delhi,Hariyana,Himachal Pradesh, Karnataka.
      
And all column names are same in all the tables , here is the column names - State, District,Year,January,February,March,April,May,June,July,Aug‌​ust,September,Octobe‌​r,NovemberDecember. And tbl_India this is the new table which I created with the same columns.... I want to add those all data in this new table.
0
Shivanand Bhangari
Asked:
Shivanand Bhangari
3 Solutions
 
Pawan KumarDatabase ExpertCommented:
Here is how we can club two or more table together

--

SELECT [col_name] FROM tablea
UNION ALL
SELECT [col_name] FROM tableb

--

Open in new window


Enjoy !!
0
 
Shivanand BhangariAuthor Commented:
executed successfully but the datas are not merged in blank table.
0
 
Terry WoodsIT GuruCommented:
You need to do an insert too:

INSERT INTO blanktable (cola, colb, ...)
SELECT [col_name] FROM tablea
UNION ALL
SELECT [col_name] FROM tableb

Open in new window

0
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Steven KribbeCommented:
you have to insert the query results into the new table:

Select * into new_table  
from  (
SELECT [col_name] FROM tablea
UNION ALL
SELECT [col_name] FROM tableb)
0
 
Pawan KumarDatabase ExpertCommented:
Here it is ! Enjoy !

--

INSERT INTO TableName [Cols]
SELECT [col_name] FROM tablea
UNION ALL
SELECT [col_name] FROM tableb


--

Open in new window


--
0
 
Tomas Helgi JohannssonCommented:
Hi!

Depending on the overall data-size of all the tables you want to merge into the new table.
If the size is over 5 million records then I strongly recommend that you partition the table in such way that you have near-even distribution and the partitioning benefits most or all queries that access the table.

Regards,
      Tomas Helgi
0

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