How to copy data from one table to another "EXCEPT" one field - mysql

Question

How to INSERT into another table except specific field
e.g
TABLE A
ID(auto_inc) CODE NAME
1 001 TEST1
2 002 TEST2
I want to insert CODE and NAME to another table, in this case TABLE B but except ID because it is auto increment
Note: I don't want to use "INSERT INTO TABLE B SELECT CODE, NAME FROM TABLE A", because I have an existing table with around 50 fields and I don't want to write it one by one
Thanks for any suggests and replies

Answer 1

This can't be done without specifying the columns (excludes the primary key).
This question might help you. Copy data into another table

Answer 2

You can get all the columns using information_schema.columns:
select group_concat(column_name separator ', ')
from information_schema.columns c
where table_name = 'tableA' and
column_name <> 'id';
This gives you the list. Then past the list into your code. You can also use a prepared statement for this, but a prepared statement might be overkill.

Answer 3

If this is a one time thing?
If yes, do the insert into tableA (select * from table B)
then Alter the table to drop the column that your dont need.

Answer 4

I tried to copy from a table to another one with one extra field.
source table is TERRITORY_t
* the principle is to create a temp table identical to the source table, adjust column fields of the temp table and copy the content of the temp table to the destination table.
This is what I did:
create a temp table called TERRITORY_temp
generate SQL by running export
CREATE TABLE IF NOT EXISTS TERRITORY_temp (
Territory_Id int(11) NOT NULL,
Territory_Name varchar(50) COLLATE utf8_unicode_ci DEFAULT NULL,
PRIMARY KEY (Territory_Id)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
copy over with
INSERT INTO TERRITORY_temp (Territory_Id, Territory_Name) VALUES
(1, 'SouthEast'),
(2, 'SouthWest'),
(3, 'NorthEast'),
(4, 'NorthWest'),
(5, 'Central');
or
INSERT INTO TERRITORY_temp
SELECT * from TERRITORY_t
add the extra field(s) to match with the new table
copy from the temp table to the destination table
INSERT INTO TERRITORY_new
SELECT * from TERRITORY_temp
Please provide feedback.

Answer 5

Step 1. Create stored procedure
CREATE PROCEDURE CopyDataTable
#SourceTable varchar(255),
#TargetTable varchar(255),
#SourceFilter nvarchar(max) = ''
AS
BEGIN
SET NOCOUNT ON;
DECLARE #SourceColumns VARCHAR(MAX)=''
DECLARE #TargetColumns VARCHAR(MAX)=''
DECLARE #Query VARCHAR(MAX)=''
SELECT
#SourceColumns = ISNULL(#SourceColumns +',', '') + T.COLUMN_NAME
FROM
(
select name as COLUMN_NAME from sys.all_columns
where object_id = (select object_id from sys.tables where name = #SourceTable)
and is_identity = 0
)T
SELECT
#TargetColumns = ISNULL(#TargetColumns +',', '') + T.COLUMN_NAME
FROM
(
select name as COLUMN_NAME from sys.all_columns
where object_id = (select object_id from sys.tables where name = #TargetTable)
and is_identity = 0
)T
set #Query = 'INSERT INTO ' + #TargetTable + ' (' + SUBSTRING(#TargetColumns,2 , 9999) + ') SELECT ' + SUBSTRING(#SourceColumns,2 , 9999) + ' FROM ' + #SourceTable + ' ' + #SourceFilter;
PRINT #Query
--EXEC(#Query)
END
GO
Step 2. Run stored procedure
use YourDatabaseName
exec dbo.CopyDataTable 'SourceTable','TargetTable'
Explanations
a) dbo.CopyDataTable will transfer all data from SourceTable to TargetTable, except field with Identity
b) You can apply filter when call stored procedure, in order to transfer only row based on criteria
exec dbo.CopyDataTable 'SourceTable','TargetTable', 'WHERE FieldName=3'
exec dbo.CopyDataTable 'SourceTable','TargetTable', 'WHERE FieldName=''TextValue'''
c) Remove -- from --EXEC(#Query) WHEN finish