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create table t(ID int, Code varchar(50), CodeType varchar(50), CodeExt varchar(50), PRIMARY KEY (Code, CodeType)) insert into t select 1 , '-S_P&S_A' , 'S_P' , 'A+B' insert into t select 1 , '-S_P&S_A' , 'S_A' , 'C' insert into t select 2 , 'S_P/S_A/S_Z' , 'S_P' , 'A+B+C' insert into t select 2 , 'S_P/S_A/S_Z' , 'S_A' , 'D' insert into t select 2 , 'S_P/S_A/S_Z' , 'S_Z' , 'E' insert into t select 3 , 'S_P' , 'S_P' , 'A'
6 rows affected
WITH numbered AS ( SELECT *, rn = ROW_NUMBER() OVER (PARTITION BY t.Code ORDER BY t.CodeType), IsLast = CASE WHEN LEAD(t.CodeType) OVER (PARTITION BY t.Code ORDER BY t.CodeType) IS NULL THEN 1 END FROM t ), cte AS ( SELECT n.ID, n.IsLast, Code_new = REPLACE(n.Code, n.CodeType, '(' + n.CodeExt + ')'), Level = 1 FROM numbered n WHERE n.rn = 1 UNION ALL SELECT cte.ID, n.IsLast, REPLACE(cte.Code_new, n.CodeType, '(' + n.CodeExt + ')'), cte.Level + 1 FROM cte JOIN numbered n ON n.ID = cte.ID AND n.rn = cte.Level + 1 ) SELECT cte.ID, cte.Code_new FROM cte WHERE cte.IsLast = 1;
ID
Code_new
3
(A)
2
(A+B+C)/(D)/(E)
1
-(A+B)&(C)