.TB_PREF."sales_pos as pos
LEFT JOIN ".TB_PREF."locations as loc on pos.pos_location=loc.loc_code
LEFT JOIN ".TB_PREF."bank_accounts as acc on pos.pos_account=acc.id
.TB_PREF."sales_pos as pos
LEFT JOIN ".TB_PREF."locations as loc on pos.pos_location=loc.loc_code
LEFT JOIN ".TB_PREF."bank_accounts as acc on pos.pos_account=acc.id