Sql 执行case语句时获取错误

我正试图执行case语句，但出现了一个错误。这是我的问题

select LOSA_APP.app_ref_no AS "App.Ref.No.",  CODE_BRANCH.branch_name AS "BRANCH"
from losa_app LOSA_APP
INNER JOIN
    losa_app_z LOSA_APP_Z  
ON
    losa_app.app_ref_no = losa_app_z.app_ref_no 
INNER JOIN
    code_branch CODE_BRANCH
ON
    LOSA_APP.attend_branch = CODE_BRANCH.branch_id
where 
    LOSA_APP.app_status='A' -- Application Status in {‘accepted’} 
and 
    trunc(sysdate) between (nvl(LOSA_APP_Z.li_dt, LOSA_APP_Z.li_collect_dt)) AND ((trunc(sysdate))) -- falling under the reporting period
and
    (trunc(sysdate) - nvl(losa_app_z.li_dt,losa_app_z.li_collect_dt)) > 90  -- select application cases at any step after entering Documentation flows.
and 
    losa_app.product_type = 'MG' -- Select records based on input parameter value passed in. 
and
    case :input1
        when 'ABB' Then code_branch.branch_code1 like '%0232%'
        when 'AiBB' Then code_branch.branch_code1 like '%0347%'
    end

在执行时，它要求我输入。在那之后，它给了我一个错误

ORA-00905: missing keyword
00905. 00000 -  "missing keyword"
*Cause:    
*Action:
Error at Line: 22 Column: 50

第22行是

当'ABB'时，然后是代码\u branch.branch\u code1，如'%0232%。

我遗漏了什么关键词

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谢谢

不要试图从CASE语句返回逻辑布尔值

相反，将CASE语句作为逻辑测试的一部分。比如

code_branch.branch_code1
like
case :input1 when 'ABB'  Then '%0232%'
             when 'AiBB' Then '%0347%' end

试试这个

SELECT ....
FROM...
WHERE ....
AND
(
    ((:input1 = 'ABB') AND code_branch.branch_code1 like '%0232%') OR
    ((:input1 = 'AiBB') AND code_branch.branch_code1 like '%0347%')
)

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谢谢你的回答和提示：）；）