vickriz Posted August 7, 2003 Share Posted August 7, 2003 Good day to all. im using Access2000. how can i make a query to find the missing records to my second table. tblMaster, tblEncoding has both no ID but they has same fields[ProvinceCode, CityOrMuni, and BarangayName]. any body has idea how can i solve this problem? by the way i have over 100thou records, so its kind a bloddy if i check this manualy.. just really need help. pls.. Quote Link to comment https://forums.phpfreaks.com/topic/844-sql-statement-for-query/ Share on other sites More sharing options...
Barand Posted August 7, 2003 Share Posted August 7, 2003 To find the records that are in TableMaster but not in TableEncoding use a LEFT JOIN :- SELECT m.ProvinceCode, m.CityOrMuni, m.BarangayName FROM TableMaster m LEFT JOIN TableEncoding e ON m.ProvinceCode = e.ProvinceCode AND m.CityOrMuni = e.CityOrMuni AND m.BarangayName = e.BarangayName WHERE e.ProvinceCode IS NULL hth Quote Link to comment https://forums.phpfreaks.com/topic/844-sql-statement-for-query/#findComment-2816 Share on other sites More sharing options...
vickriz Posted August 8, 2003 Author Share Posted August 8, 2003 To find the records that are in TableMaster but not in TableEncoding use a LEFT JOIN :- SELECT m.ProvinceCode, m.CityOrMuni, m.BarangayName FROM TableMaster m LEFT JOIN TableEncoding e ON m.ProvinceCode = e.ProvinceCode AND m.CityOrMuni = e.CityOrMuni AND m.BarangayName = e.BarangayName WHERE e.ProvinceCode IS NULL hth sorry for being naive but, what does the \'m\' and \'e\' represents?? Quote Link to comment https://forums.phpfreaks.com/topic/844-sql-statement-for-query/#findComment-2829 Share on other sites More sharing options...
shivabharat Posted August 8, 2003 Share Posted August 8, 2003 Its called an alias name say you have a tabled name phpfreak you can create an alias named \"p\" and refer it by that name in the query. select * from phpfream p where p.name=\"php\" Alias names are typically used in joins! Quote Link to comment https://forums.phpfreaks.com/topic/844-sql-statement-for-query/#findComment-2830 Share on other sites More sharing options...
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