这样的sql，我却做到了

这样的sql，我却做到了

作者:​​三十而立​​

需求是这样的

求写oracle多个字符替换（有测试数据）

create table A_TEST  (  PAYOUT_ITEM_CODE VARCHAR2(30) not null,  FORMULA_DET VARCHAR2(1000)  )  create table B_TEST  (  ELEMENT_ID VARCHAR2(5) not null,  NAME VARCHAR2(41)  )

FORMULA_DET列里ELEMENT_ID替换成NAME

测试数据如下

insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30228', '({30015}+{30016})*450');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*1500');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*5000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*2500');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*2300');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*1150');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30104', '({30015}+{30016})*300*12');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*2300');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*5000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*3000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30102', '({30015}+{30016})*1500');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30006}+{30061}+{30008}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*3800*12');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30210', '({30030}+{30031}+{30032})*38000+{30033}*23000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30210', '({30030}+{30031}+{30032}+{30033})*38000+{30036}*10000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30229', '({30015}+{30016})*1400');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30228', '({30015}+{30016})*450');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30216', '({30015}+{30016})*1300');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30216', '({30015}+{30016})*650');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30307', '({30015}+{30016})*360');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30051}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30052}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30053}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30054}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30055}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30302', '{30056}');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*4000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*3800');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*100*12');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*500*12');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30060}*0');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}/{30057}*150000');  insert into a_test (PAYOUT_ITEM_CODE, FORMULA_DET)  values ('30226', '{30057}*6000');

insert into b_test (ELEMENT_ID, NAME)  values ('30006', 'a1');  insert into b_test (ELEMENT_ID, NAME)  values ('30008', 'a2');  insert into b_test (ELEMENT_ID, NAME)  values ('30009', 'a3');  insert into b_test (ELEMENT_ID, NAME)  values ('30010', 'a4');  insert into b_test (ELEMENT_ID, NAME)  values ('30015', 'a5');  insert into b_test (ELEMENT_ID, NAME)  values ('30016', 'a6');  insert into b_test (ELEMENT_ID, NAME)  values ('30017', 'a7');  insert into b_test (ELEMENT_ID, NAME)  values ('30018', 'a8');  insert into b_test (ELEMENT_ID, NAME)  values ('30019', 'a9');  insert into b_test (ELEMENT_ID, NAME)  values ('30020', 'a10');  insert into b_test (ELEMENT_ID, NAME)  values ('30021', 'a11');  insert into b_test (ELEMENT_ID, NAME)  values ('30022', 'a12');  insert into b_test (ELEMENT_ID, NAME)  values ('30023', 'a13');  insert into b_test (ELEMENT_ID, NAME)  values ('30024', 'a14');  insert into b_test (ELEMENT_ID, NAME)  values ('30025', 'a15');  insert into b_test (ELEMENT_ID, NAME)  values ('30026', 'a16');  insert into b_test (ELEMENT_ID, NAME)  values ('30027', 'a17');  insert into b_test (ELEMENT_ID, NAME)  values ('30028', 'a18');  insert into b_test (ELEMENT_ID, NAME)  values ('30029', 'a19');  insert into b_test (ELEMENT_ID, NAME)  values ('30030', 'a20');  insert into b_test (ELEMENT_ID, NAME)  values ('30031', 'a21');  insert into b_test (ELEMENT_ID, NAME)  values ('30032', 'a22');  insert into b_test (ELEMENT_ID, NAME)  values ('30033', 'a23');  insert into b_test (ELEMENT_ID, NAME)  values ('30034', 'a24');  insert into b_test (ELEMENT_ID, NAME)  values ('30035', 'a25');  insert into b_test (ELEMENT_ID, NAME)  values ('30036', 'a26');  insert into b_test (ELEMENT_ID, NAME)  values ('30037', 'a27');  insert into b_test (ELEMENT_ID, NAME)  values ('30038', 'a28');  insert into b_test (ELEMENT_ID, NAME)  values ('30039', 'a29');  insert into b_test (ELEMENT_ID, NAME)  values ('30040', 'a30');  insert into b_test (ELEMENT_ID, NAME)  values ('30041', 'a31');  insert into b_test (ELEMENT_ID, NAME)  values ('30042', 'a32');  insert into b_test (ELEMENT_ID, NAME)  values ('30043', 'a33');  insert into b_test (ELEMENT_ID, NAME)  values ('30044', 'a34');  insert into b_test (ELEMENT_ID, NAME)  values ('30045', 'a35');  insert into b_test (ELEMENT_ID, NAME)  values ('30046', 'a36');  insert into b_test (ELEMENT_ID, NAME)  values ('30047', 'a37');  insert into b_test (ELEMENT_ID, NAME)  values ('30048', 'a38');  insert into b_test (ELEMENT_ID, NAME)  values ('30049', 'a39');  insert into b_test (ELEMENT_ID, NAME)  values ('30050', 'a40');  insert into b_test (ELEMENT_ID, NAME)  values ('30051', 'a41');  insert into b_test (ELEMENT_ID, NAME)  values ('30052', 'a42');  insert into b_test (ELEMENT_ID, NAME)  values ('30053', 'a43');  insert into b_test (ELEMENT_ID, NAME)  values ('30054', 'a44');  insert into b_test (ELEMENT_ID, NAME)  values ('30055', 'a45');  insert into b_test (ELEMENT_ID, NAME)  values ('30056', 'a46');  insert into b_test (ELEMENT_ID, NAME)  values ('30057', 'a47');  insert into b_test (ELEMENT_ID, NAME)  values ('30058', 'a48');  insert into b_test (ELEMENT_ID, NAME)  values ('30059', 'a49');  insert into b_test (ELEMENT_ID, NAME)  values ('30060', 'a50');  insert into b_test (ELEMENT_ID, NAME)  values ('30061', 'a51');

这个如果用function或者是sp做，就没有什么难度了。  但是用sql做就比较难度了

select gid, payout_item_code, formula_det, max(substr(txt, 1, length(txt)-1)) from (  select a.gid,  a.payout_item_code,  a.formula_det,  replace(sys_connect_by_path(decode(b.element_id, null, a.signal, replace(signal, b.element_id, b.name)),'##'), '##', '') txt  from  (select gid, payout_item_code, formula_det, row_number() over(partition by gid order by level) rn,  substr(formula_det, decode(rownum-(allcnt-selfcnt), 1, 1, instr(formula_det, '}', 1, rownum-(allcnt-selfcnt)-1)+1), instr(formula_det, '}', 1, rownum-(allcnt-selfcnt))-decode(rownum-(allcnt-selfcnt), 1, 0, instr(formula_det, '}', 1, rownum-(allcnt-selfcnt)-1))) signal  from (select a.payout_item_code, a.rowid gid,  a.formula_det||'}' formula_det,  length(a.formula_det) -  length(replace(a.formula_det, '}', '')) + 1 selfcnt,  sum(length(a.formula_det) - length(replace(a.formula_det, '}', ''))+1) over(order by rowid) allcnt, sum(length(a.formula_det) - length(replace(a.formula_det, '}', ''))+1) over() sumcnt  from a_test a) t1  start with (allcnt-selfcnt)=0 connect by rownum < sumcnt+1 and instr(formula_det, '}', 1, rownum-(allcnt-selfcnt)) >0) a  left join b_test b on instr(a.signal||'}', '{'||b.element_id||'}', 1, 1)>0  start with a.rn = 1 connect by prior a.gid = a.gid and prior a.rn + 1 = a.rn)  group by gid, payout_item_code, formula_det

如果没有那句“三十而立”，三十岁的男人正可以轻轻松松

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