I have exhausted my search or understanding how to resolve our problem performing an SQL query in a more effecient manner.
The included SQL script pulls from 3 tables that have combined rows that equal 40,970,221. This of course for 3 wafers but you can divide that by 3 and that is my standard data pull.
Any suggestions if there are any? Am i doomed to have to endure the time it takes to pull this all in.
SELECT CASE WHEN t2.testname = 'test_1' THEN t3.ts WHEN t2.testname = 'test_2' THEN t4.ts WHEN t2.testname = 'test_3' THEN t5.ts END AS TimeStamp, t1.testdate, t1.wafer_number, t2.rownum, t2.colnum, t2.subrow, t2.subcol, t2.part_name, t2.part_number, t2.testname, t2.set_id, t2.trmode, t2.channel, t2.teststate, t2.refstate, t2.filterstate, t2.data_id5, CASE WHEN t2.testname = 'test_1' THEN t3.input_1 WHEN t2.testname = 'test_2' THEN t4.input_2 WHEN t2.testname = 'test_3' THEN t5.input_3 END AS INPUT t3.output_1 t3.output_2, t3.output_3, t4.output_1, t4.output_2, t4.output_3, t5.output_1, t5.output_2 FROM tst_master t1 LEFT OUTER JOIN table_2 t2 ON ( t2.run_id = t1.run_id ) LEFT OUTER JOIN table_5 t5 ON ( t5.header_id = t2.header_id ) LEFT OUTER JOIN table_3 t3 ON ( t3.header_id = t2.header_id ) LEFT OUTER JOIN table_4 t4 ON ( t4.header_id = t2.header_id ) WHERE ( ( t1.wafer_number IN ( 'wafer_1' , 'wafer_2' , 'wafer_3' ) ) ) AND ( t2.testname IN ( 'test_1', 'test_2', 'test_3' ) )
ODBC tends to be slow. You could try:
If you have SQL server there are similar products; just not familiar with any of them.
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