pogresql基础学习笔记
命令行工具:psql
可视化工具:pgAdmin
查看所有表:
命令行:\d
sql:select * from pg_tables WHERE schemaname='public';
查看表结构:
命令行:\d table_name
sql:太麻烦
创建函数(存储过程):
CREATE OR REPLACE FUNCTION totalRecords () RETURNS integer AS $total$ declare total integer; BEGIN SELECT count(*) into total FROM EMPLOYEES; RETURN total; END; $total$ LANGUAGE plpgsql;
使用:select totalRecords();