mysql - How to handle ambiguous field in my SQL - 


select tb.id, latitude, longitude, 111151.29341326 * sqrt( pow( -6 - `latitude` , 2 ) + pow( 106 - `longitude` , 2 ) * cos( -6 * 0.017453292519943 ) * cos( `latitude` * 0.017453292519943 ) ) distance `tablebusiness` tb join `tablecity` tc on tb.city = tc.city join `businessestag` bc on bc.businessid = tb.id join `businessesdistricts` bd on bd.businessid = tb.id join `tabledistrict` td on td.id = bd.district ( `title` '%restaurant%' or `street` '%restaurant%' or tb.city '%restaurant%' or bc.tag '%restaurant%' or td.district '%restaurant%' ) , ( - 6.0917668133836 < `latitude` , `latitude` < - 5.9082331866164 , 105.90823318662 < `longitude` , `longitude` < 106.09176681338 ) order distance limit 0, 100

this mysql went through

then want based on building too.

so did, suggested do

select   tb.id,   latitude,   longitude,   111151.29341326 * sqrt(pow(-6 - `tb.latitude`, 2) + pow(106 - `tb.longitude`, 2) * cos(-6 * 0.017453292519943) * cos(`tb.latitude` * 0.017453292519943)) distance   `tablebusiness` tb   join `tablecity` tc     on tb.city = tc.city   join `businessestag` bc     on bc.businessid = tb.id   join `businessesdistricts` bd     on bd.businessid = tb.id   join `tabledistrict` td     on td.id = bd.district   left join `tablebusiness` tbuilding     on tbuilding.id = tb.building   (`title` '%restaurant%' or `street` '%restaurant%' or tb.city '%restaurant%'      or bc.tag '%restaurant%' or td.district '%restaurant%' or tbuilding.title '%restaurant%')   , (-6.0917668133836 < `tb.latitude` , `tb.latitude` < -5.9082331866164      , 105.90823318662 < `tb.longitude` , `tb.longitude` < 106.09176681338)  order   distance limit   0, 100

then got message latitude fields ambiguous.

what should do?

i did obvious adding tb. before latitude

explain select   tb.id,   tb.latitude,   tb.longitude,   111151.29341326 * sqrt(pow(-6 - `tb.latitude`, 2) + pow(106 - `tb.longitude`, 2) * cos(-6 * 0.017453292519943) * cos(`tb.latitude` * 0.017453292519943)) distance   `tablebusiness` tb   join `tablecity` tc     on tb.city = tc.city   join `businessestag` bc     on bc.businessid = tb.id   join `businessesdistricts` bd     on bd.businessid = tb.id   join `tabledistrict` td     on td.id = bd.district   left join `tablebusiness` tbuilding     on tbuilding.id = tb.building   (`title` '%restaurant%' or `street` '%restaurant%' or tb.city '%restaurant%'      or bc.tag '%restaurant%' or td.district '%restaurant%' or tbuilding.title '%restaurant%')   , (-6.0917668133836 < `tb.latitude` , `tb.latitude` < -5.9082331866164      , 105.90823318662 < `tb.longitude` , `tb.longitude` < 106.09176681338)  order   distance limit   0, 100

and error #1054 - unknown column 'tb.latitude' in 'field list'

i suppose need prepend latitude referring tb alias

select   tb.id,   tb.latitude, ...

it may happen, longitude ambiguous, i'd suggest prepending appropriate alias well.

upd.:

i additionally suggest remove quotes surrounding tb.latitude , tb.latitude causing "unknown column" error.


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