查询表的字段注解
select * from user_col_comments co where Table_Name='LC_APPL' and co.comments like'%自动%'
查询的 nvl函数和 分割函数 to_char
SELECT l.appl_seq, lc.appl_ac_no, case when lc.appl_ac_kind = '01' then '放款卡号' when lc.appl_ac_kind = '02' then '还款卡号' end cardtype FROM lc_appl l join lc_appl_acc_info lc on l.appl_seq = lc.appl_seq where substr(nvl(l.last_chg_dt, to_char(sysdate - 1, 'yyyy-MM-dd')), 1, 10) = to_char(sysdate, 'yyyy-MM-dd') and lc.appl_ac_no is not null;