Есть ли возможность написать эти запросы в одном запросе:
select code from carp.site where CODE_ADAM='038547' and CODE_IMPLANTATION='ND038547' and CODE_POSTAL='73479'; select code from carp.site where CODE_ADAM='034587' and CODE_IMPLANTATION='ND034587' and CODE_POSTAL='01994'; select code from carp.site where CODE_ADAM='037929' and CODE_IMPLANTATION='ND037929' and CODE_POSTAL='27367'; select code from carp.site where CODE_ADAM='038596' and CODE_IMPLANTATION='ND038596' and CODE_POSTAL='45721';
Используйте OR или IN:
OR
IN
select code from carp.site where (CODE_ADAM, CODE_IMPLANTATION, CODE_POSTAL) IN (('038547', 'ND038547', '73479'), ('ND034587', '01994', '037929'), . . . );