sql

時間 2019-12-21

標籤 sql 欄目 SQL 简体版

原文原文鏈接

表結構：oop

ddl:hadoop

Create Table

CREATE TABLE `ord` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `date` datetime DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8

Create Table

CREATE TABLE `orditem` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `ord_id` int(11) DEFAULT NULL,
  `prd_id` int(11) DEFAULT NULL,
  `num` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `ord` (`ord_id`),
  KEY `prd` (`prd_id`),
  CONSTRAINT `ord` FOREIGN KEY (`ord_id`) REFERENCES `ord` (`id`),
  CONSTRAINT `prd` FOREIGN KEY (`prd_id`) REFERENCES `prd` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8產品

Create Table

CREATE TABLE `prd` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `type` int(11) DEFAULT NULL,
  `desc` varchar(30) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8

需求：獲取一週內，同品類產品天天的售賣數量it

答案：io

SELECT DATE_FORMAT(`ord`.`date`, '%Y-%m-%d') sale_date,SUM(orditem.`num`) sale_num, prd.`type`,`prd`.`desc` FROM `ord` INNER JOIN orditem ON `ord`.`id` = orditem.`ord_id` INNER JOIN prd ON orditem.`prd_id` = prd.`id` WHERE `ord`.`date` > DATE_SUB(CURDATE(), INTERVAL 1 WEEK) GROUP BY sale_date,prd.`type` ORDER BY sale_date DESC;table

<configuration>
   <property>
       <name>hive.cli.print.header</name>
       <value>true</value>
   </property>cli

   <property>
       <name>hive.cli.print.current.db</name>
       <value>true</value>
   </property>
</configuration>
date

HADOOP_HOME=/opt/hadoop
49
50 # Hive Configuration Directory can be controlled by:
51 export HIVE_CONF_DIR=/opt/hive/conf
im