现一个表中有很多字段,但我不想要其中某一个字段,手打出来字段太多,不方便. SELECT GROUP_CONCAT( column_name SEPARATOR ',' ) FROM information_schema.COLUMNS WHERE column_name <> '你不想要的字段名' AND table_name = '表名' GROUP BY table_name…
转载自:http://blog.csdn.net/cicon/article/details/51577655 获取表名及注释: select relname as tabname,cast(obj_description(relfilenode,'pg_class') as varchar) as comment from pg_class c  where  relkind = 'r' and relname not like 'pg_%' and relname not like 'sql…
获取表名及注释: select relname as tabname,cast(obj_description(relfilenode,'pg_class') as varchar) as comment from pg_class c where  relkind = 'r' and relname not like 'pg_%' and relname not like 'sql_%' order by relname 过滤掉分表: 加条件 and relchecks=0 即可 获取字段名.…
MYSQL类实现从数据库相应的表中获取所有属性及其数据,数据为元组类型.返回结果存放在字典中 import pymysql class MYSQL: def __init__(self): pass def __del__(self): self._cursor.close() self._connect.close() def connectDB(self): """ 连接数据库 :return: """ try: self._connect…
参考代码: /** * 获取主键字段 * @param $table * @param $database * @return mixed */ public function get_primary_key($table,$database){ $sql = "SELECT k.column_name FROM information_schema.table_constraints t JOIN information_schema.key_column_usage k USING (con…
我有个新闻表 id,title,body,createtime,author,click 使用ef4.1 仅仅读取 id,title,createtime 并显示在页面上. public static List<NewInfo> GetHotNews() { List<NewInfo> list; list = (from n in db.NewInfoes where n.IsTop == 1 orderby n.PublishTime descending select new…
我有个新闻表 id,title,body,createtime,author,click 使用ef4.1 仅仅读取 id,title,createtime 并显示在页面上. public static List<NewInfo> GetHotNews() { List<NewInfo> list; list = (from n in db.NewInfoes where n.IsTop == 1 orderby n.PublishTime descending select new…
PostgreSQL获取数据库中所有table名: SELECT tablename FROM pg_tables WHERE tablename NOT LIKE 'pg%' AND tablename NOT LIKE 'sql_%' ORDER BY tablename; PostgreSQL获取数据库中所有table名及table的注解信息: SELECT tablename, obj_description(relfilenode, 'pg_class') FROM pg_tables…
前台代码: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>请求参数传递和接收问题</title> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta htt…
import java.sql.Connection; import java.sql.DatabaseMetaData; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.sql.Statement; import java.sql.Types; //jdbc链接数据库,获取表…