oracle查询所有表和表结构信息sql

select * from user_tables;

查询当前用户下所有表

select * from user_tab_columns;

查询用户有所表下字段信息

SELECT * FROM USER_COL_COMMENTS;

查询用户所有字段信息的注释

select * from user_cons_columns ;

查询用户字段约束和字段对应关系

select * from user_constraints;

查询用户所有约束信息

oracle 查询全部表和对应表结构sql

SELECT T .database_name AS database_name,T .table_name AS table_name,T .column_name AS column_name,T .column_type AS column_type,T .data_length AS data_length,T .column_comment AS column_comment,b.constraint_type AS constraint_typeFROM ( SELECT UB.tablespace_name AS database_name,UTC.table_name AS table_name,UTC.column_name AS column_name,UTC.data_type AS column_type,utc.data_length AS data_length,ucc.comments AS column_comment FROM user_tables ub LEFT JOIN user_tab_columns utc ON ub.table_name = UTC.table_name LEFT JOIN user_col_comments ucc ON utc.column_name = ucc.column_name AND utc.table_name = ucc.table_name ) TLEFT JOIN ( SELECT UCC.table_name AS table_name,ucc.column_name AS column_name,wm_concat (UC.constraint_type) AS constraint_type FROM user_cons_columns ucc LEFT JOIN user_constraints uc ON UCC.constraint_name = UC.constraint_name GROUP BY UCC.table_name,ucc.column_name) b ON T .table_name = b.TABLE_NAMEAND T .column_name = b.column_name————————————————版权声明：本文为CSDN博主「liyanpeng1989」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。原文链接：https://blog.csdn.net/liyanpeng1989/article/details/80116030

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