Update Statement through function

Question

Hi,
I've got the following select statement that is pulling 29 records:
select distinct aqh.quote_number, aqh.quote_header_id,aqh.quote_version, aql.line_number, msi.inventory_item_id, msi.segment1
,aqh.price_list_id, aqh.quote_expiration_date,aql.line_list_price, qpv.operand
from aso_quote_headers_all aqh, aso_quote_lines_all aql,mtl_system_items msi
,qp_list_headers qlh, qp_list_lines qpl, qp_list_lines_v qpv
where aqh.quote_header_id = aql.quote_header_id
and aql.inventory_item_id = msi.inventory_item_id
and aqh.price_list_id = qlh.list_header_id
and qlh.list_header_id = qpl.list_header_id
and qlh.list_header_id = qpv.list_header_id
and qpl.list_line_id = qpv.list_line_id
and msi.inventory_item_id = qpv.product_id
and aqh.quote_number = :quote_number --56530
i need to update the operand = list_line_price, for all the multiple 29 records. for every quote_number and quote_version_no.
i need help in this to write a function with update statement.
Thanks and Regards

Answer 1

Hi,
whenever you have a problem, post a little sample data (CREATE TABLE and INSERT statements) for all the tables, and the results you want from that data. In the case of a DML operation (like UPDATE) the results will be the contents of the changed table after the DML is finished.
MERGE may be easier to use than UPDATE in this case.
Put your existing query in the USING clause. The only columns it needs to include in the SELECT clause are those that identify which rows to update, and the new values (line_list_price in this case). I assume that the table to be updated has a unique key, which I called primary_key in the example below. This can actually be two or more columns, but it can't include the column being updated (operand).
I assume that all the tables and all the conditions in your original query are necessary to get the columns in the SELECT clause. If not, you can simplify the query.
MERGE INTO     qp_list_lines_v     dst
USING     (
     select distinct aql.line_list_price, qpv.primary_key
     from aso_quote_headers_all aqh, aso_quote_lines_all aql,mtl_system_items msi
     ,qp_list_headers qlh, qp_list_lines qpl, qp_list_lines_v qpv
     where aqh.quote_header_id = aql.quote_header_id
     and aql.inventory_item_id = msi.inventory_item_id
     and aqh.price_list_id = qlh.list_header_id
     and qlh.list_header_id = qpl.list_header_id
     and qlh.list_header_id = qpv.list_header_id
     and qpl.list_line_id = qpv.list_line_id
     and msi.inventory_item_id = qpv.product_id
     and aqh.quote_number = :quote_number --56530
     )     src
ON     (src.primary_key     = dst.primary_key)
WHEN MATCHED THEN UPDATE
SET     dst.operand     = src.list_line_price;You can use a MERGE statement like this in a PL/SQL procedure or function. (If you put this in a function, then you can only call the function from PL/SQL; you can't use a function that performs DML in a SQL query.)
As posted above, the statement will use a single, given quote_number. (You mentioned another column, quote_version_number, that does not appear in your original query. It's unclear what you want with that column.)
You can replace the bind variable :quote_number with an argument to the procedure, as Achyut suggested. It will still only work on a single, given quote_number.
If you want it to work on all quote numbers at once, then omit the last condition (the one that references quote_number), or change it to
AND   aqh.quote_number  IS NOT NULLdepending on your needs.
If you want more help, post some sample data and the desired results.