Estou fazendo uma query, porém estou aprendendo agora. Tem como melhorar a performance dessa query?
select a.COD_EMPRESA, b.Dat_pagamento from SAS_EMPRESA a full outer join SAS_ITEM_PAGO b on (a.COD_PREF_EMPRESA || a.COD_EMPRESA = b.COD_PREF_EMPRESA || b.COD_EMPRESA) Where a.COD_GRUPO= 'BOT1' and TO_CHAR(b.Dat_pagamento,'YYYYMM') BETWEEN 201601 AND 201711
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