SELECT NAME_TITLE_TH , NAME_TITLE_EN , LINK_DATA , TYPE_FILE_LINK , (SELECT FILE_SAVE_NAME FROM WF_FILE WHERE WF_MAIN_ID = 57936 AND WFR_ID = M_KUSAM_PHOTO_VIDEO.M_ID AND FILE_STATUS = 'Y') AS FILE_NAME FROM M_KUSAM_PHOTO_VIDEO WHERE 1=1 AND ACTIVE_STATUS = 'Y' AND TYPE_DATA = 1 ORDER BY M_ID DESCError Description: ERROR: operator does not exist: character varying = integer LINE 13: AND TYPE_DATA = 1 ^ HINT: No operator matches the given name and argument types. You might need to add explicit type casts.