--查找字段所在
SELECT
bb.TABLE_NAME,
bb.COLUMN_NAME ,
aa.COLUMN_ID,
aa.DATA_TYPE,
aa.DATA_LENGTH ,
bb.COMMENTS
FROM
user_tab_cols aa
JOIN user_col_comments bb ON
aa.TABLE_NAME = bb.TABLE_NAME
AND aa.COLUMN_NAME = bb.COLUMN_NAME
JOIN dba_objects cc ON
bb.TABLE_NAME = cc.Object_Name
WHERE
bb.COLUMN_NAME LIKE '%PRODUCTNAME%'
AND DATA_LENGTH<30
AND DATA_TYPE!='UNDEFINED'
AND DATA_TYPE！='CHAR'
ORDER BY
cc.created DESC ,
bb.TABLE_NAME,
aa.COLUMN_ID ;
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