判断表的主键

select a.table_name,b.column_name, b.position
from USER_CONSTRAINTS a, USER_CONS_COLUMNS b
where a.constraint_name = b.constraint_name and a.constraint_type='P' and b.table_name = 'ETL_NODE_RUN_CFG';


(select c.COLUMN_ID, c.COLUMN_NAME, c.DATA_TYPE, c.DATA_LENGTH, c.NULLABLE,'N' ISPK FROM ALL_TAB_COLUMNS c WHERE c.OWNER = 'PETL' AND c.TABLE_NAME ='ETL_NODE_RUN_CFG' and (c.COLUMN_NAME not in (select b.column_name from USER_CONSTRAINTS a, USER_CONS_COLUMNS b where a.constraint_name = b.constraint_name and a.constraint_type='P' and b.owner = 'PETL' and b.table_name = 'ETL_NODE_RUN_CFG'))) union all (select c.COLUMN_ID, c.COLUMN_NAME, c.DATA_TYPE, c.DATA_LENGTH, c.NULLABLE,'Y' ISPK FROM ALL_TAB_COLUMNS c WHERE c.OWNER = 'PETL' AND c.TABLE_NAME ='ETL_NODE_RUN_CFG' and (c.COLUMN_NAME in (select b.column_name from USER_CONSTRAINTS a, USER_CONS_COLUMNS b where a.constraint_name = b.constraint_name and a.constraint_type='P' and b.owner = 'PETL' and b.table_name = 'ETL_NODE_RUN_CFG'))) order by COLUMN_ID;