Mysql 查询列注释及列名称

晓洛 — Sun, 04 Jul 2010 16:32:00 GMT

//查询列注释及列名称

select column_name, column_comment from information_schema.columns where table_schema ='databaseName' and table_name = 'tableName';

//查询表注释及表名称

select table_name,table_comment from information_schema.tables where table_schema = 'image' and table_name ='tableName';

晓洛 2010-07-05 00:32 发表评论

Oracle查询表注释

晓洛 — Wed, 19 May 2010 06:41:00 GMT

字段注释

select * from user_col_comments;

表注释

select * from user_tab_comments;

查询字段类型

select column_name,data_type,data_length from user_tab_columns where table_name='TableName' and column_name in ('AGE_ID','MONTH_ID')

Column_name值为大写

查询表的主键

select * from user_cons_columns where table_name='D_DAY'

select column_name from user_cons_columns where constraint_name in (select constraint_name from user_constraints where table_name = 'D_DAY' and constraint_type = 'P')

//查询某表字段的主键名称及类型

select column_name,data_type,data_length,DATA_PRECISION||','||DATA_SCALE from user_tab_columns v join (select column_name from user_cons_columns where constraint_name in (select constraint_name from user_constraints where table_name = 'D_DAY' and constraint_type = 'P')) t using (column_name) where table_name='D_DAY'

晓洛 2010-05-19 14:41 发表评论

C++博客-晓洛的茶园-随笔分类-数据库

Mysql 查询列注释及列名称

Oracle查询表注释