Performance issue with the ABAP statements

Question

Hello,
Please can some help me with the below statements where I am getting performance problem.
SELECT * FROM /BIC/ASALHDR0100 into Table CHDATE.
SORT CHDATE by DOC_NUMBER.
SORT SOURCE_PACKAGE by DOC_NUMBER.
LOOP AT CHDATE INTO WA_CHDATE.
   READ TABLE SOURCE_PACKAGE INTO WA_CIDATE WITH KEY DOC_NUMBER =
   WA_CHDATE-DOC_NUMBER BINARY SEARCH.
   MOVE WA_CHDATE-CREATEDON  to WA_CIDATE-CREATEDON.
APPEND WA_CIDATE to CIDATE.
ENDLOOP.
I wrote an above code for the follwing requirement.
1. I have 2 tables from where i am getting the data
2.I have common fields in both the table names CREATEDON date. In both the tables I hve the values.
3. While accessing the 2 table and copying to thrid table i have to modify the field.
I am getting performance issues with the above statements.
Than
Edited by: Rob Burbank on Jul 29, 2010 10:06 AM

Answer 1

Hello,
try a select like the following one instead of you code.
SELECT field field2 ...
INTO TABLE it_table
FROM table1 AS T1 INNER JOIN table2 AS T2
ON t1-doc_number = t2-doc_number