从概念上讲,我在寻找SET <all columns named like 'paf%'> TO THEIR DEFAULT OR NULL或者至少SET pafAuth=<pafAuth default or NULL>, pafComp=<pafComp default or NULL>, paf
on pas.anc_reg_id = paf.anc_reg_id where paf.age < 19 and Extract(year from paf.followup_date) = Extracton pas.anc_reg_id = paf.anc_reg_id where paf.age < 19 and Extract(year from paf.followup_date) = Extractfrom ph_anc_survey pas join p