How to restate the ytd after an update??

Question

I have a situation that I need to tackle to update b_id column and restate the YTD charge in a table.
Can some one help me on how to use analytical function to update and restate the ytd in a table.
Step 1: Update in Column b_id to replace C4000 with NV500 for eff_dt 1/31/2007
Step 2: Restate the Ytd_chrg column as shown in the following record set:
Following are the record set before update
a_id b_id c_id eff_dt curr_chrg ytd_chrg
07200 C4000 ABC_01 1/31/2007 400 400
07200 C4000 ABC_01 2/28/2007 0 400
07200 C4000 ABC_01 3/31/2007 0 400
07200 C4000 ABC_01 4/30/2007 0 400
07200 C4000 ABC_01 5/31/2007 0 400
07200 C4000 ABC_01 6/30/2007 0 400
07200 NV500 ABC_01 2/28/2007 500 500
07200 NV500 ABC_01 3/31/2007 600 1100
07200 NV500 ABC_01 4/30/2007 250 1350
07200 NV500 ABC_01 5/31/2007 100 1450
07200 NV500 ABC_01 6/30/2007 200 1650
Following are record set after update and restate the ytd_chrg
a_id b_id c_id eff_dt curr_chrg ytd_chrg
07200 NV500 ABC_01 1/31/2007 400 400
07200 C4000 ABC_01 2/28/2007 0 400
07200 C4000 ABC_01 3/31/2007 0 400
07200 C4000 ABC_01 4/30/2007 0 400
07200 C4000 ABC_01 5/31/2007 0 400
07200 C4000 ABC_01 6/30/2007 0 400
07200 NV500 ABC_01 2/28/2007 500 900
07200 NV500 ABC_01 3/31/2007 600 1500
07200 NV500 ABC_01 4/30/2007 250 1750
07200 NV500 ABC_01 5/31/2007 100 1850
07200 NV500 ABC_01 6/30/2007 200 2050
Your help is appreciated.
Thanks.

Answer 1

The rule/logic on which we need to update that column are:
Step 1: Update the b_id column. change C4000 TO NV500 for eff_dt '1/31/2007'
update T_INVC_RPT
set b_id = 'NV500'
WHERE A_ID = '07200'
AND B_ID = 'C4000'
AND C_ID = 'ABC_01'
AND eff_dt = to_date('1/31/2007','mm/dd/yyyy');
Step 2: Update the 'running total' from column curr_chrg to the column ytd_chrg.
Pl. see the above after update example for ytd_chrg calculation from Jan-June period.
I can run the select analysical sql without error. (computes the running total for curr_chrg from jan-june
The update sql script is not working!!!
update T_INVC_RPT
set YTD_CHRG = (SELECT sum(CURR_CHRG)
OVER (ORDER BY a_id, b_id, c_id, eff_dt)
FROM T_INVC_RPT
WHERE A_ID = '07200'
AND B_ID = 'NV500'
AND C_ID = 'ABC_01'
ORDER BY C_ID)
WHERE A_ID = '07200'
AND B_ID = 'NV5000'
AND C_ID = 'ABC_01'
ORDER BY C_ID;
Thanks,
Message was edited by:
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Message was edited by:
[email protected]