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1.查询表中的主键和序列
select uc.table_name 表名, ucc.column_name 主键列名, uic.column_name 序列列名
from user_constraints uc, user_cons_columns ucc, user_indexes ui,user_ind_columns uic
where
-----关联关系
uc.table_name = ucc.table_name
and uc.table_name = ui.table_name
and ui.table_name = uic.table_name
-----表名
and uc.table_name = 'XXX(表名大写)'
-----主键名
and uc.constraint_type = 'P'
and uc.constraint_name = ucc.constraint_name
-----序列名
and ui.index_name = uic.index_name
2.查询外键
select uc.table_name 表名, ucc.column_name 外键列名,uc.constraint_type
from user_constraints uc, user_cons_columns ucc
where
-----关联关系
uc.table_name = ucc.table_name
------表名
and uc.table_name = 'XXX(表名大写)'
------外键名
and uc.constraint_type = 'R'
and uc.constraint_name = ucc.constraint_name
3.查询表结构字段
select uc.table_name 表名,
utc.comments 表说明,
uc.column_name 字段名,
ucc.comments 字段说明,
uc.data_type 数据类型,
uc.data_length 长度,
uc.nullable 是否为空,
uc.data_default 默认值
from cols uc, user_col_comments ucc, user_tab_comments utc
where uc.table_name = ucc.table_name
and uc.column_name = ucc.column_name
and uc.table_name = utc.table_name
and uc.table_name='XXX(表名大写)'
order by uc.table_name, uc.column_id