SELECT table_name, pg_size_pretty(table_size) AS table_size, pg_size_pretty(indexes_size) AS indexes_size, pg_size_pretty(total_size) AS total_size FROM ( SELECT table_name, pg_table_size(table_name) AS table_size, pg_indexes_size(table_name) AS inde
方法 1. show create table table_name;可以用这个看表的代码. show create table Strings; 方法 2. show full columns from table_name; show full columns from Strings; 方法 3. show columns from table_name; show columns from Strings; 方法 4. describe table_name;
-- 表索引select * from pg_indexes where tablename='person_wechat_label';select * from pg_statio_all_indexes where relname='person_wechat_label';-- 所有表SELECT * FROM pg_tables;-- 所有视图SELECT * FROM pg_views;-- 表结构SELECT a.attnum,a.attname AS field,t.typnam
-- 表索引select * from pg_indexes where tablename='person_wechat_label';select * from pg_statio_all_indexes where relname='person_wechat_label';-- 所有表SELECT * FROM pg_tables;-- 所有视图SELECT * FROM pg_views;-- 表结构SELECT a.attnum,a.attname AS field,t.typnam
SQL Server中授予用户查看对象定义的权限 在SQL Server中,有时候需要给一些登录名(用户)授予查看所有或部分对象(存储过程.函数.视图.表)的定义权限存.如果是部分存储过程.函数.视图授予查看定义的权限,那么就像下面脚本所示,比较繁琐: GRANT VIEW DEFINITION ON YOUR_PROCEDURE TO USERNAME; GRANT VIEW DEFINITION ON YOUR_FUNCTION TO USERNAME; GRANT VIEW D
建表SQL: DROP TABLE IF EXISTS person; CREATE TABLE person( person_id serial PRIMARY KEY NOT NULL, person_name ), gender INT, person_addr ), birthday DATE ); 注意:在postgresql中建表的时候,将主键id字段设置成serial类型,会自动生成一个关联主键id的序列(如下图中的数据库会创建一个隐含序列"person_person_id_seq
在mysql中如果想要查看表的定义的话:有如下方式可供选择 1.show create table 语句: show create table table_name; 2.desc table_name 语句: create table person( id int not null auto_increment primary key, name varchar(8), index ix__person__name (name)); desc person; +-------+--------
在mysql中如果想要查看表的定义的话:有如下方式可供选择 1.show create table 语句: show create table table_name; 2.desc table_name 语句: create table person( id int not null auto_increment primary key, name ), index ix__person__name (name)); desc person; +-------+------------+----