动态参数查询

Question

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?

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

Working Code:

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;

Answer 1

You have to concatenate the '%' literals:

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

The whole query would be:

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 || ''%'' ';