First, we need to initialize the hive database in the main.dart file.import 'package:flutter/material.dart'; import 'package:hive_database/home_page.dart'; import 'package:hive_flutter/hive_flutter.dart'; void
Hive is a lightweight and buzzing-fast key-value database made for Flutter and Dart. Features 🌟 🌍 Bee everywhere: mobile, desktop, browser 🚀 Buzzing speed: Faster than a bee on caffeine! 💡 Sweet, powerful, & intuitive API ...
chat mqtt hivemq flutter flutter-chat hivemq-chat-extension flutter-mqtt Updated Mar 20, 2022 Dart EXXETA / correomqtt Star 56 Code Issues Pull requests Discussions A modern graphical MQTT client using the HiveMQ client library. MQTT is a messaging protocol widely used in the IoT world....
新建一个create_database.sql文件,运行命令 hive -f create_database.sql create_database.sql文件内容如下: createdatabasedb_hive_01;createdatabaseifnotexistsdb_hive_02;createdatabaseifnotexistsdb_hive_03 location'/user/hive/warehouse/db_hive_03.db';createtabledb_hive_03.user(ipint, name string...
To use SSL to encrypt/authenticate the connection, provide database-specific SSL flag in the connection URL. For example, jdbc:postgresql://myhost/db?ssl=true for postgres database.</description></property> 5)修改剩余配置:修改所有的临时目录为/home/centos/hive,修改所有的用户名为root用户 ...
{publicstaticvoidmain(String[]args)throwsException{HiveConfconf=newHiveConf();Hivehive=Hive.get(conf);Tabletable=hive.getTable("database_name.table_name");List<FieldSchema>columns=table.getCols();for(FieldSchemacolumn:columns){System.out.println(column.getName()+"\t"+column.getType());}hive...
<spring.version>3.2.1.RELEASE</spring.version> <logback.version>1.0.6</logback.version> <querydsl.version>2.9.0</querydsl.version> </properties> <dependencies> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-hadoop</artifactId> ...
CREATEDATABASEIFNOTEXISTSexample_db;USEexample_db; 1. 2. 第一行代码用于创建数据库,第二行用于选择该数据库。 步骤3:创建测试表 在数据库中创建一个用于存储字符串数据的测试表。 CREATETABLEIFNOTEXISTSsample_table(idINT,name STRING); 1. 2. ...
load datalocalinpath "/root/example/hive/data/emp.txt"intotableemp;//查询1.求每个部门的平均薪水大于2000的部门2.同1,但加上部门名字0: jdbc:hive2://bigboss3:10000>selectemp.deptid,dept.name,avg(salary)asavgsalaryfromemp,deptwhereemp.deptid=dept.idgroupbyemp.deptid,dept.namehavingavgsalary>2000...
<description>password to use against metastore database</description> </property> </configuration> 5.安装hive和mysq完成后,将mysql的连接jar包拷贝到$HIVE_HOME/lib目录下 如果出现没有权限的问题,在mysql授权(在安装mysql的机器上执行) mysql -uroot -p ...