背景 平台目前的分析任务主要以Hive为主，分析后的结果存储在HDFS，用户通过REST API或者Rsync的方式获取分析结果，这样的方式带来以下几个问题： （1）任务执行结束时间未知，用户必须自行编写代码不断地通过REST API请求分析结果，直至获取到分析结果为止，其中还需要处理分析结果过大，转而通过Rsync方式获取； （2）受限于Hive SQL的表达能力，用户的计算逻辑无法完全表述，获取分析结果后需要再计算，然后入库； （3）...
Gaps in auto-increment values for “bulk inserts”With innodb_autoinc_lock_mode set to 0 (“traditional”) or 1 (“consecutive”), the auto-increment values generated by any given statement will be consecutive, without gaps, because the table-level AUTO-INC lock is held until the end of the statement, and only one such statement can execute at a time. With innodb_autoinc_lock_mode set to 2 (“inte...
mysql 批量操作标签：本文系统来源：http://www.cnblogs.com/zlp520/p/4766255.html
from (select d.father AS deptId , d.id, d.deptName from dept d ) a join mysql.help_topic b on b.help_topic_id < (length(a.deptId) - length(replace(a.deptId,‘,‘,‘‘))1)) t LEFT JOIN dept d on t.deptId = d.id where t.deptId != ‘‘ GROUP BY id, deptName ) c set b.location=c.dName where b.id = c.id效果如图版权声明：本文为博主原创文章，未经博主允许不得转载。批量更新逗号隔开的名称 （部门里面将多...
Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Queries and reconnect. 0.000 sec因为是MySQL Workbench的默认的安全设置是不能批量更新表的。解决方法：一、在SQL语句之前添加 SET SQL_SAFE_UPDATES = 0;二、修改MySQL Workbench设置：打开Workbench的菜单[Edit]->[Preferences....
static String url = "jdbc:mysql://ip/database?characterEncoding=UTF-8"; //在database 后面加上?characterEncoding=UTF-8 就可以解决java 插入数据中文乱码问题public static String username = "user";public static String password = "123";public static Connection conn;public static Statement stmt;public static ResultSet rs;public static DataStructure ds = new DataStructure();/*public Connection getConne...
1.使用insert into插入ini_set(‘max_execution_time‘,‘0‘);//限制超时时间，因为第一种时间较长，索性设为0不限制 $pdo = new PDO("mysql:host=localhost;dbname=oradt_cloud1520","root","123456"); for($i=0; $i<100000; $i++){$str = strrand(32);$pdo -> exec("insert into scan_card_picture(uuid,account_id,handle_state,created_time,status,from_account,accuracy,ifupdate) values(‘".$str."‘,‘A7kVzZYK...
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title> </head> <body><h2>分页查询<h2/><form action="fenye.php" method="get"><table border="1" bordercolor="#FF0000"><?phpclass page{ private...
!/bin/bash ### AUTHOR: Leo ### DATE: 2015/09/23 ### REV: 1.0 echo -e "Input the dbname you want to use: \c" read db mysql -uroot -ppro#pateo -e "use $db;show tables;"|grep -v Tables>tb_in_$db.txt; for tb in `cat tb_in_$db.txt` doecho $tb;mysql -uroot -ppro#pateo -e "use tas;delete from $tb;select * from $tb;"echo ‘---------------------------------------‘; done rm -rf tb_in_$db.txt; mysql批量删除...
#!/bin/bash ###需要部署数据库的IP列表####ip192.168.1.10#ip192.168.1.11#ip192.168.1.12#ip192.168.1.13#ip192.168.1.14#ip192.168.1.15######执行脚本前，请确认已通外网，YUM源可用####cd /rootmyb=mysql-5.6.24-linux-glibc2.5-x86_64.tar.gzml=`echo $myb|cut -d"t" -f1|cut -d"." -f1,2,3,4`#wget http://dev.mysql.com/get/Downloads/MySQL-5.6/$mybmysql1=/opt/mysqlmysqldir=/usr/localmysqldata=/data/mysql/mysql3306...
今天突然发现我们数据库中多出很多表，后缀名为“copy”,预计是navicat直接拷贝导致的，然后要对这些有同样后缀名的表进行删除，假设一个一个选择会非常麻烦，表计较多，在网上找了找方法，网上主要通过sql语句来删除。自己在他的基础上写了一个php文件实现了批量删除表。事实上原理是一样的。 1、MYSQL批量删除 [1]获得批量删除的命令： Select CONCAT( drop table , table_name, ; ) FROM information_schema.tables Where ...
import java.io.BufferedReader;2 import java.io.FileReader;3 import java.sql.Connection;4 import java.sql.DriverManager;5 import java.sql.PreparedStatement;6 7 /**8 *9 */ 10 public class PreparedStatementTestMain { 11 private static PreparedStatement ps; 12 public static void main(String[] args) { 13 try{ 14 Class.forName("com.mysql.jdbc.Driver"); 15 Connec...
DROP PROCEDURE IF EXISTS jsjh_goods_property_value_update$$ CREATE PROCEDURE jsjh_goods_property_value_update() BEGIN DECLARE row_base_brand varchar(50);#定义变量品牌 DECLARE row_title varchar(50);#定义tlete DECLARE row_value varchar(50);#定义value DECLARE done INT; -- 定义游标 DECLARE rs_cursor CURSOR FOR SELECT a.base_brand,b.title FROM jsjh_goods_item a LEFT JOIN jsjh_goods_property_value b ON ...
#删除创建存储过程DROP PROCEDURE IF EXISTS FountTable; DELIMITER $$ CREATE PROCEDURE FountTable() BEGINDECLARE TableName varchar(64); #声明游标DECLARE cur_FountTable CURSOR FOR SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA=‘front‘ AND TABLE_NAME LIKE ‘student%‘;DECLARE EXIT HANDLER FOR not found CLOSE cur_FountTable;#打开游标OPEN cur_FountTable;REPEATFETCH cur_FountTab...
data [low_priority] [local] infile ‘file_name txt‘ [replace | ignore] into table tbl_name [character set gbk] [fields [terminated by‘t‘] [OPTIONALLY] enclosed by ‘‘] [escaped by‘\‘ ]] [lines terminated by‘n‘] [ignore number lines] [(col_name, )] 导入命令_example：load data infile ‘csv文件路径\\test.csv‘ replace into table 表名 fields terminated by ‘,‘ optionally enclo...