sqlString = select txn_dt as lastday,subj_id,debit_at,credit_at,curr_bal_at,last_mth_end_at,curr_yr_start_at from ssdtot where city_id='5850000' and txn_dt in ( select max(txn_dt) from ssdtot where substr(txn_dt,1,6)='200403') order by subj_id 拆开，先select max(txn_dt) from ssdtot where substr(txn_dt,1,6)='200403'存起来 再select txn_dt as lastday,subj_id,debit_at,credit_at,curr_bal_at,last_mth_end_at,curr_yr_start_at from ssdtot where city_id='5850000' and txn_dt in (xxx) order by subj_id
拆开，先select max(txn_dt) from ssdtot where substr(txn_dt,1,6)='200403'存起来
再select txn_dt as lastday,subj_id,debit_at,credit_at,curr_bal_at,last_mth_end_at,curr_yr_start_at from ssdtot where city_id='5850000' and txn_dt in (xxx) order by subj_id