动态参数化查询，如: [英] Dynamic parameterized query with like

问题描述

Normal赋值运算符工作正常，但就像操作不适用于存储过程中的以下查询一样，您能纠正查询的问题吗?

The Normal assignment operator is working fine but like operation is not working with below query in a Stored Procedure, Could you correct what is wrong with the query?

在基于查询的过程中仅更改为LIKE运算符时，将引发异常

On changing only to LIKE Operator below query based procedure throws exception

AND APP_FRAMES.APP_EXT_CODE =:IN_APP_EXT_CODE%;      -- working

AND APP_FRAMES.APP_EXT_CODE LIKE %:IN_APP_EXT_CODE%; -- not working

工作代码:

QUERY_STR := 'select * from APP_FRAME_PROPERTIES,APP_FRAMES
Where APP_FRAME_PROPERTIES.APP_EXT_CODE = APP_FRAMES.APP_EXT_CODE
AND APP_FRAMES.APP_EXT_CODE =:IN_APP_EXT_CODE';

OPEN OUT_RESULT FOR QUERY_STR USING IN_APP_EXT_CODE;

推荐答案

您必须连接'%'文字:

AND APP_FRAMES.APP_EXT_CODE LIKE '%' || :IN_APP_EXT_CODE || '%'; 

整个查询将是:

QUERY_STR := 'select * from APP_FRAME_PROPERTIES,APP_FRAMES
Where APP_FRAME_PROPERTIES.APP_EXT_CODE = APP_FRAMES.APP_EXT_CODE
AND APP_FRAMES.APP_EXT_CODE LIKE ''%'' || :IN_APP_EXT_CODE || ''%'' ';

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