Oracle查看具体某张表的表结构
SELECT T1.TABLE_NAME,
T1.COLUMN_NAME,
T1.NULLABLE,
T1.DATA_TYPE || '(' || T1.DATA_LENGTH || ')',
T2.COMMENTS
FROM all_tab_columns T1, all_COL_COMMENTS T2
WHERE T1.TABLE_NAME = T2.TABLE_NAME
AND T1.COLUMN_NAME = T2.COLUMN_NAME
AND T1.TABLE_NAME = 'OA_AD_USER';
SELECT T1.TABLE_NAME,
T1.COLUMN_NAME,
T1.NULLABLE,
T1.DATA_TYPE || '(' || T1.DATA_LENGTH || ')',
T2.COMMENTS
FROM USER_TAB_COLS T1, USER_COL_COMMENTS T2
WHERE T1.TABLE_NAME = T2.TABLE_NAME
AND T1.COLUMN_NAME = T2.COLUMN_NAME
AND T1.TABLE_NAME = 'OA_AD_USER';