Select and Count not working.....HELP PLEASE!!

Question

I have the following scenerio:
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AN101011%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//brings back count of 1 which is right...only one part within the date range
PCOUNT: 1
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AC043208%' OR #PART LIKE 'AN101011%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//looped through result set and these two counts are right
PCOUNT: 1
PCOUNT: 1
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AN101011%' OR #PART LIKE 'AC043208%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//now brings back a pcount of 2 for the first part which is shouldn't, there are two parts with the same number but only one which falls within the date range.
PCOUNT: 2
PCOUNT: 1
could anyone help me with this.....thanks in advance

Answer 1

Found the solution....its in the order of processing of the select statement...for others future reference....
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AN101011%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//brings back count of 1 which is right...only one part within the date range
PCOUNT: 1
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AC043208%' OR #PART LIKE 'AN101011%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//looped through result set and these two counts are right
PCOUNT: 1
PCOUNT: 1
//*****this works because in actual fact it is reading the date range and it associates it with the last part number so it reads it like this (note the brackets):
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AC043208%' OR (#PART LIKE 'AN101011%' AND #RECDT BETWEEN 19970826 AND 20020826) GROUP BY #PART,#PDESC
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AN101011%' OR #PART LIKE 'AC043208%' AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC
//now brings back a pcount of 2 for the first part which is shouldn't, there are two parts with the same number but only one which falls within the date range.
PCOUNT: 2
PCOUNT: 1
//***this did not work because the date range only applied to the last part number not the first..so it read it like (note the brackets):
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE #PART LIKE 'AN101011%' OR (#PART LIKE 'AC043208%' AND #RECDT BETWEEN 19970826 AND 20020826) GROUP BY #PART,#PDESC
//**Therefore, I changed it to (including the brackets) and it ran fine:
SELECT #PART,#PDESC,COUNT(#PART) AS PCOUNT FROM MYLIB WHERE (#PART LIKE 'AN101011%' OR #PART LIKE 'AC043208%') AND #RECDT BETWEEN 19970826 AND 20020826 GROUP BY #PART,#PDESC