SQL Select 用 case then 列出多个值

Question

我有一个变量，基于该变量，我想从 select 命令中排除该值。如果我想排除 1 个字符串，它工作正常，但如果我在相同条件下排除多个字符串，它就不起作用。这是代码。当变量是 abc 和 EFG 时它工作正常，但对于 XYZ 我想排除 'abc' 和 'efg'

select table.column1
from table
where column1 not like
        case 
            when variable = 'abc' THEN '%abc%'
            when variable  = 'EFG' THEN '%efg%'
            when variable  = 'XYZ' THEN '%abc%' and '%efg%'
        else 
              '_'
        END

我尝试使用“%abc%”和“%efg%”以及“%(abc|efg)%”和“%abc%”||和|| “%efg%”，但其中 none 个似乎在工作。

Answer 1

我想你想要：

where (variable = 'abc' and column1 not like '%abc%') or
      (variable = 'EFG' and column1 not like '%EFG%') or
      (variable = 'XYZ' and column1 not like '%abc%' and column1 not like '%XYZ%') or
      (variable not in ('abc', 'EFG', 'XYZ'))

Answer 2

我认为您的问题的解决方案不是 case when 语句而是 sample where 。我在 livesql 中为此创建了脚本，并在下面分享：

create table tab( 
id_1 number, 
column_1 varchar2(20), 
variable_1 varchar2(20));

insert into tab(id_1,column_1,variable_1) values(8,'13 efg iu','abc');
insert into tab(id_1,column_1,variable_1) values(7,'1 3','KDG');
insert into tab(id_1,column_1,variable_1) values(6,'_','KDG');
insert into tab(id_1,column_1,variable_1) values(5,'_','XYZ');
insert into tab(id_1,column_1,variable_1) values(4,'abc 3 8','XYZ');
insert into tab(id_1,column_1,variable_1) values(3,'efg SDK','EFG');
insert into tab(id_1,column_1,variable_1) values(2,'EFGSSDK','EFG');
insert into tab(id_1,column_1,variable_1) values(1,'12abc12','abc');

commit;

select tab.id_1, tab.column_1 
from tab 
where (variable_1 = 'abc' and column_1 not like '%abc%') or 
      (variable_1 = 'EFG' and column_1 not like '%efg%') or 
      (variable_1 = 'XYZ' and column_1 not like '%abc%' and column_1 not like '%efg%') or 
      (variable_1 not in ('abc', 'EFG', 'XYZ') and column_1  not like '_');

SQL Select 用 case then 列出多个值

SQL Select List mulitple values with case then

sql

oracle

oracle-apex