insert from temptable to another table - mysql

Question

I wish to add data from temp table to another table but its giving me Duplicate Value Error.
I think its because for other client may have same primary key(statement_image_id is primary Key) or same primary key for same client but different LOAN No.
Now how can I add these data to another table.
My Temp table:
select top 0 * into #temptable from tab1
INSERT INTO #temptable ([STATEMENT_IMAGE_ID]
,[client_no]
,[LOAN_NO]
,[statement_date]
,[ACCRUED_LATE_CHARGES]
,[TOTAL_DUE])
SELECT msp.[STATEMENT_IMAGE_ID] --as msp_ID
,[client_no]
,[LOAN_NO]
,[statement_date]
,[ACCRUED_LATE_CHARGES]
,[TOTAL_DUE]
FROM tab1 si, tab2 msp
WHERE msp.[client_no] = si.[client_no] and msp.[loan_no] = si.[loan_no]
and msp.[statement_date] = si.[statement_date]
and msp.[statement_image_id] <> si.[statement_image_id]
and this is what I tried .
First is giving duplicate error and other is not allowed I think.
First
insert into tab1 select * from #temptable
Second
insert into tab1 select * from #temptable
where tab1.[client_no] =#temptable.client_no
and tab1.[loan_no]= #temptable.[loan_no]
and tab1.[statement_date] = #temptable.[STATEMENT_DATE]
Any Suggestion please?

Answer 1

You cannot have duplicate\null values in the primary key columns.
One thing you can do is,
Update tab1 for same STATEMENT_IMAGE_ID values in tab1 and #temptable.
Insert data into tab1 for diffrent STATEMENT_IMAGE_ID values in tab1 and #temptable.
insert into tab1 (
select tmp.*
from #temptable tmp
join tab1 t on t.STATEMENT_IMAGE_ID != tmp.STATEMENT_IMAGE_ID
) as x
update tab1 t
join #temptable tmp on t.STATEMENT_IMAGE_ID == tmp.STATEMENT_IMAGE_ID
set
t.client_no = tmp.client_no,
t.LOAN_NO = tmp.LOAN_NO,
t.statement_date = tmp.statement_date,
t.ACCRUED_LATE_CHARGES = tmp.ACCRUED_LATE_CHARGES,
t.TOTAL_DUE = tmp.TOTAL_DUE;
Note:
If any other columns have unique constraint you have to consider that also.
If you cannot loose data then create a new image_id
insert into tab1 (
select tmp.*
from #temptable tmp
join tab1 t on t.STATEMENT_IMAGE_ID != tmp.STATEMENT_IMAGE_ID
union all
select
UUID(),
tmp.client_no,
tmp.LOAN_NO,
tmp.statement_date,
tmp.ACCRUED_LATE_CHARGES,
tmp.TOTAL_DUE
from #temptable tmp
join tab1 t on t.STATEMENT_IMAGE_ID == tmp.STATEMENT_IMAGE_ID
) as x
note: if UUID() is your choice.. else some_new_id.