连接数据库服务器,切换至postgres(或其他数据库用户)下,
psql--进入数据库命令行终端,执行如下相关查询操作:
显示数据库:
\l
连接指定的数据库:
\c 数据库名
查看当前实例下的表:
\dt
用sql语句方式查询:
SELECT tablename FROM pg_tables;
查询某张表的表结构及字段信息
\d tablename--实际表名
用sql语句方式查询:
SELECT a.attnum, a.attname AS field, t.typname AS type, a.attlen AS length, a.atttypmod AS lengthvar
, a.attnotnull AS notnull, b.description AS comment
FROM pg_class c, pg_attribute a
LEFT JOIN pg_description b
ON a.attrelid = b.objoid
AND a.attnum = b.objsubid, pg_type t
WHERE c.relname = '实际的表名'
AND a.attnum > 0
AND a.attrelid = c.oid
AND a.atttypid = t.oid
ORDER BY a.attnum;
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