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Hive SHOW tables in database like

show tables in bank like '*cust*' It is returning the expected results like, which are the tables has a word cust in its name. Now my requirement is i want all the tables which will have cust in its name and table should not have quarter2 SHOW TABLES list/displays tables from the current database. IN is an optional keyword in SHOW. The IN clause is used to provide the database if it is not the current. SHOW TABLES can display tables with names matching the optional regular expression SHOW TABLES The SHOW TABLES command returns a list of views created within a schema. It also returns the tables that exist in Hive and HBase when you use storage plugin configurations for these data sources. See Storage Plugin Registration

Apache Hive is a data warehousing tool used to perform queries and analyze structured data in Apache Hadoop. It uses a SQL-like language called HiveQL. In this article, learn how to create a table in Hive and load data. We will also show you crucial HiveQL commands to display data Returns all the tables for an optionally specified database. Additionally, the output of this statement may be filtered by an optional matching pattern. If no database is specified then the tables are returned from the current database. Syntax SHOW TABLES [ { FROM | IN } database_name ] [ LIKE regex_pattern ] Parameters { FROM | IN } database_nam trigger comment-preview_link fieldId comment fieldName Comment rendererType atlassian-wiki-renderer issueKey HIVE-1363 Preview commen

In hive you can view all tables within a database using below commands (if show tables command is issued without selecting the database then all the tables within default hive database will be listed) hive> show databases; (this command will list. SHOW TABLES December 22, 2020 Returns all the tables for an optionally specified database. Additionally, the output of this statement may be filtered by an optional matching pattern

hive - Impala: Show tables like query - Stack Overflo

In our last Impala tutorial, we learned to create table statements, drop table statements in Impala. in this tutorial, we will discuss Impala Show Statements, i s used to get information about different types of Impala objects.. Moreover, we will discuss, how to get information with Impala SHOW Statement.Also, we will cover its syntax, usage as well as an example to understand it well The syntax of show partition is pretty straight forward and it works on both internal or external Hive Tables. The output is order alphabetically by default

Before becoming an open source project of Apache Hadoop, Hive was originated in Facebook. It provides a mechanism to project structure onto the data in Hadoop and to query that data using a SQL-like language called HiveQL (HQL). Hive is used because the tables in Hive are similar to tables in a relational database In the hive, the tables are consisting of columns and rows and store the related data in the table format within the same database. The table is storing the records or data in tabular format. The tables are broadly classified into two parts i.e.; external table and internal table Hive SHOW PARTITIONS Command Hive SHOW PARTITIONS list all the partitions of a table in alphabetical order. Hive keeps adding new clauses to the SHOW PARTITIONS, based on the version you are using the syntax slightly changes Description The SHOW TABLES statement returns all the tables for an optionally specified database. Additionally, the output of this statement may be filtered by an optional matching pattern. If no database is specified then the tables are returned from the current database

Hive Show - TutorialsCampu

The uses of SCHEMA and DATABASE are interchangeable - they mean the same thing. CREATE DATABASE was added in Hive 0.6 ().. The WITH DBPROPERTIES clause was added in Hive 0.7 ().MANAGEDLOCATION was added to database in Hive 4.0.0 ().LOCATION now refers to the default directory for external tables and MANAGEDLOCATION refers to the default directory for managed tables Hive by default contains a default database, you can get this using SHOW DATABASES; statement. Note: when you running SQL statements on Hive or beeline shell terminal, the statement should end with a semicolon. Hive Create Database Synta

you can use the below sql statement in the metastore database. mysql -u root -e use hive;SELECT NAME, TBL_NAME FROM DBS as a, TBLS as b where a.DB_ID=b.DB_ID;> tables.txt. tables.txt will have the list of all tables In this recipe, you will learn how to list tables in Hive.This command lists all the tables and views in a database. This website uses cookies and other tracking technology to analyse traffic, personalise ads and learn how we can improve the experience for our visitors and customers The table in the hive is consists of multiple columns and records. The table we create in any database will be stored in the sub-directory of that database. The default location where the database is stored on HDFS is /user/hive/warehouse. The way of creating tables in the hive is very much similar to the way we create tables in SQL Tables (or views) are needed if you want to perform SQL like queries on data in Spark. ('show tables from global_temp') Showing tables from specific database with Pyspark and Hive Create the database with the name Temp in /hive_db directory on HDFS. Here, the LOCATION will override the default location where the database directory is made. Now the tables you make for this database will be created inside /hive_db in HDFS. CREATE DATABASE Temp LOCATION '/hive_db'; 2. COMMENT. We can add comments with the database we have.

SHOW TABLES - Apache Dril

Types of Tables in Apache Hive. Here are the types of tables in Apache Hive: Managed Tables. In a managed table, both the table data and the table schema are managed by Hive. The data will be located in a folder named after the table within the Hive data warehouse, which is essentially just a file location in HDFS Let say that there is a scenario in which you need to find the list of External Tables from all the Tables in a Hive Database using Spark. One way is to query hive metastore but this is always not possible as we may not have permission to access it. We can try the below approach as well: Step1: Create 1 Internal Table and 2 External Table 1) 'show tables;' is the standard SQL way of getting table names. '!tables' is specific to Beeline so use 'show tables;' to make sure your SQL is portable to other SQL clients. 2) Use '!sh <command>' to run shell command, e.g Unlike various relational databases such as Netezza, Teradata, Oracle etc, Apache hive support pattern matching using LIKE, RLIKE or INSTR functions. You can search for string by matching patterns. Note that, Hive LIKE statement is case-sensitive.. Apache Hive LIKE statements returns TRUE if string that you are searching for. The Hive NOT LIKE is negation of LIKE and vice-versa SHOW TABLES is used to show both tables and views. There is nothing like SHOW VIEWS in Hive. DESCRIBE and DESCRIBE EXTENDED statements can be used for views like for tables, however, for DESCRIBE EXTENDED, the detailed table information has a variable named typeable which has value = 'virtual view' for views

Viewing Hive Schema and Table Metadata. When using Hive, you access metadata about schemas and tables by executing statements written in HiveQL (Hive's version of SQL) such as SHOW TABLES.When using the HCatalog Connector, you can get metadata about the tables in the Hive database through several Vertica system tables.. There are four system tables that contain metadata about the tables. Hive; HIVE-23359 show tables like support for SQL wildcard characters (% and _) Edit. Comment. Assign More. Reopen Issue. Export. Log work Agile Board Rank to Top Rank to Bottom Voters Watch issue Watchers Create sub-task Convert to sub-task Move Link Clone Labels Update Comment Author Replace String in Comment Update Comment Visibility. In hive you can view all tables within a database using below commands (if show tables command is issued without selecting the database then all the tables within default hive database will be listed) hive> show databases; (this command will list.

How to Create a Table in Hive {And Display Table Data

  1. In the above step, we have created a hive table named Students in the database college with various fields like ID, Name, fee, city, etc. Comments have been mentioned for each column so that anybody referring to the table gets an overview about what the columns mean
  2. For the database that has many tables, showing all tables at a time may not be intuitive. Fortunately, the SHOW TABLES command provides you with an option that allows you to filter the returned tables using the LIKE operator or an expression in the WHERE clause as follows
  3. you can use the below sql statement in the metastore database. mysql -u root -e use hive;SELECT NAME, TBL_NAME FROM DBS as a, TBLS as b where a.DB_ID=b.DB_ID;> tables.txt. tables.txt will have the list of all tables
  4. Read a table. Now that we have our table, let's create a notebook and display our baseball table. For this example, I'm going to use Scala. This is a fairly simple process. On my cluster I've got a couple of databases, so I've used a bit of Spark SQL to use our default database like so %sql USE default; Databricks supports Scala, SQL.
  5. Test connection to the HMS with Hive Cli. Running some commands, we can see we have a database named default and there's no table in it. hive> show databases; OK default Time taken: 0.032 seconds, Fetched: 1 row (s) hive> show tables; OK Time taken: 0.028 seconds, Fetched: 0 row (s) step 2: configure Flink cluster and SQL CL
  6. Run query silent mode hive ‐S ‐e 'select a.col from tab1 a' Set hive config variables hive ‐e 'select a.col from tab1 a' ‐hiveconf hive.root.logger=DEBUG,console Use initialization script hive ‐i initialize.sql Run non-interactive script hive ‐f script.sql Hive Shell Function Hive
  7. This command can be used with database and table. SHOW; The Show command will provide a view or lists of all databases that are stored in the Hive. It is used with databases, tables, table properties, functions and index as well. DESCRIBE; This Hive command shows the name of the database in the Hive, its set comment and even its location on the.
Hive Create, Alter & Drop Table

In this article, we are going to learn Hive DDL commands. The article describes the Hive Data Definition Language(DDL) commands for performing various operations like creating a table/database in Hive, dropping a table/database in Hive, altering a table/database in Hive, etc Coming to Tables it's just like the way that we create in traditional Relational Databases. The functionalities such as filtering, joins can be performed on the tables. Hive deals with two types of table structures like Internal and External tables depending on the loading and design of schema in Hive. Internal tables

SHOW TABLES - Azure Databricks - Workspace Microsoft Doc

Note: In Impala 1.2.4 and higher, you can specify a table name with INVALIDATE METADATA after the table is created in Hive, allowing you to make individual tables visible to Impala without doing a full reload of the catalog metadata. Impala 1.2.4 also includes other changes to make the metadata broadcast mechanism faster and more responsive, especially during Impala startup hive> show databases; To view all the tables in a database, first switch to that database and then use the follow command: hive> show tables; The command to view the schema/metadata of a particular table use the command: hive> desc emp_details; Today we saw how to create a database, table and inserting data into table. We loaded data from local. Q 12 - By default when a database is dropped in Hive A - the tables are also deleted B - the directory is deleted if there are no tables C - the hdfs blocks are formatted D - Only the comments associated with database is deleted Q 13 - If the database contains some tables then it can be forced to drop without dropping the tables by using the. Alter Table. In the hive, we can do multiple modifications to the existing tables like renaming the tables, adding more columns to the table. The commands to alter the table are very much similar to the SQL commands. Here is the syntax to rename the table: ALTER TABLE <<table_name>> RENAME TO <<new_name>> ; Syntax to add more columns from the. hive> SHOW LOCKS test; OK Time taken: 0.305 seconds If you do a simple query like: SELECT count(1) FROM test; you will see that the table will be SHARED locked: hive> SHOW LOCKS test; OK [email protected] SHARED Time taken: 0.159 seconds, Fetched: 1 row(s

[HIVE-1363] 'SHOW TABLE EXTENDED LIKE' command does not

  1. Hive table is one of the big data tables which relies on structural data. By default, it stores the data in a Hive warehouse. To store it at a specific location, the developer can set the location.
  2. g you have a Hadoop Environment with hive and sqoop installed. Create a table in MySQL c
  3. table_exist = spark. sql ('show tables in ' + database). where (col ('tableName') == table). count == 1 When we use insertInto we no longer need to explicitly partition the DataFrame (after all, the information about data partitioning is in the Hive Metastore, and Spark can access it without our help)
  4. The SHOW statement is a flexible way to get information about different types of Impala objects.. Syntax: SHOW DATABASES [[LIKE] 'pattern'] SHOW SCHEMAS [[LIKE] 'pattern'] - an alias for SHOW DATABASES SHOW TABLES [IN database_name] [[LIKE] 'pattern'] SHOW [AGGREGATE | ANALYTIC] FUNCTIONS [IN database_name] [[LIKE] 'pattern'] SHOW CREATE TABLE [database_name].table_name SHOW CREATE VIEW.
  5. View table data and metadata of all tables in all the databases on the server: Database: View table data and metadata of all tables in the database: Table: View table data and metadata: Column: View table data and metadata for the granted column: View: In CDH 5.x, column-level permissions with the SELECT privilege are not available for views
  6. 3 For compatibility with Hive, when you use the LIKE clause, you can specify only the LOCATION, TBLPROPERTIES, and HINTS clauses, 4 Each clause can only be used once. 5 The Big SQL database manager natively supports the data types that are described in Data types. However, there are some data types that are syntactically supported for.
  7. Hey, HIVE: - Hive is an ETL (extract, transform, load) and data warehouse tool developed on the top of the Hadoop Distributed File System. In Hive, tables and databases are created first and then the data is loaded into these tables. Hive as data warehouse is designed only for managing and querying only the structured data that is stored in the table

How to get a complete list of all table names in all

  1. Hive - Drop Table. Hive facilitates us to drop a table by using the SQL drop table command. Let's follow the below steps to drop the table from the database. Let's check the list of existing databases by using the following command:
  2. As Hive represents underlying data in tabular form, it needs a metastore service to store metadata corresponding to the data. It is implemented using tables in a relational database. Hive metastore is a relational database to manage the metadata of the persistent relational entities, e.g. databases, tables, columns, partitions in Hive
  3. Apache Hive: It is a data warehouse infrastructure based on Hadoop framework which is perfectly suitable for data summarization, analysis and querying. It uses an SQL like language called HQL (Hive query Language) HQL: It is a query language used to write the custom map reduce framework in Hive to perform more sophisticated analysis of the data Table: Table in hive is a table which contains.
  4. Table options used to optimize the behavior of the table or configure HIVE tables. Note. This clause is not supported by Delta Lake. If a table with the same name already exists in the database, an exception will be thrown. [IF NOT EXISTS] [db_name.]table_name1 LIKE [db_name.]table_name2 [LOCATION path] Create a managed table using the.

HIVE SHOW TABLES Syntax. This command lists the tables in the current working database. hive> SHOW TABLES; EMP Table1 Table2 HIVE DESCRIBE Syntax. The DESCRIBE statement displays metadata about a table, such as the column names and their data types. hive> DESCRIBE financial.emp.salary salary float HIVE DROP Database Synta As Hive do not provide any way to get row count of all tables in a single statement, people generally have to write some custom script to get the result. Here we will use Spark to get row count of all tables in a particular Hive DB. We will sent Hive DB name from the command line argument on Spark submit statement. Spark Code In Hive, it is not allowed to drop the database that contains the tables directly. In such a case, we can drop the database either by dropping tables first or use Cascade keyword with the command. Let's see the cascade command used to drop the database: [IN database_name] Specifies the database_name from which tables will be listed. If omitted, the database from the current context is assumed. ['regular_expression'] Filters the list of tables to those that match the regular_expression you specify

Should see a prompt like: -----hive> Set a Hive or Hadoop conf prop: -----hive> show tables; Describe a table: -----hive> describe hadoop , learn hadoop , hadoop for dummies , hadoop commands , hive definition , hiveql , learnhive , hive sql , hive database , hive date functions , hive query , apache hive tutorial , hive apache , hive. In Hive, tables and databases are created first and then data is loaded into these tables. Hive as data warehouse designed for managing and querying only structured data that is stored in tables. While dealing with structured data, Map Reduce doesn't have optimization and usability features like UDFs but Hive framework does [code SQL]SHOW CREATE TABLE <your table>; [/code] You'll need to combine this with SHOW TABLES through some kind of script, but shouldn't be more than like 4 lines of code The hive metastore DB is a normal MySQL/etc database with a hive schema in it. The hive schema holds the hive tables though. So, the information schema is irrelevant to hive; to get the hive table details, you have to interrogate the TBLS table, for example What would you like to do? --Show tables in a database : SHOW TABLES; SHOW TABLES IN mydb; Raw. hive-tables-ddl.sql -----CREATE A TABLE -----Create a managed table: CREATE TABLE IF NOT EXISTS mydb. employees (name STRING COMMENT ' Employee name', salary FLOAT COMMENT ' Employee.

The results should show an external table with the same name as the new Hive table. Connector records are written to the Hive metastore logs. Queries executed by the connector can be viewed in the Snowflake QUERY_HISTORY view/function output similar to other queries DSCI 5350 Created by: Kashif Saeed pg. 1 Sqoop Hands-on - Activity 3 Importing to Hive Directly from a database You can import your RDBMS table directly into Hive without bringing it into HDFS like previously done. You have two options when bringing RDBMS table directly to Hive. 1. Create table structure only in Hive 2. Create table structure and bring your data to Hive Importing table.

First of all, In order to understand the data type in sqoop and hive let's create following scenario. I have following table in hdfs. Lets delete all the table from hive database. hive> dfs -ls /user/hive/warehouse ; Found 2 items drwxr-xr-x - hduser supergroup 0 2017-03-31 18:37 /user/hive/warehouse/hive.db drwxr-xr-x - hduser supergroup 0 2017-03-29 18:4 其中 emp.txt 的内容如下,你可以直接复制使用,也可以到本仓库的resources 目录下载:. 7369 smith clerk 7902 1980-12-17 00:00:00 800.00 20 7499 allen salesman 7698 1981-02-20 00:00:00 1600.00 300.00 30 7521 ward salesman 7698 1981-02-22 00:00:00 1250.00 500.00 30 7566 jones manager 7839 1981-04-02 00:00:00 2975.00 20 7654 martin salesman 7698 1981-09-28 00:00:00 1250. Show partitions Sales partition(dop='2015-01-01'); The following command will list a specific partition of the Sales table from the Hive_learning database: Cop show partitions expenses; Partition keys behave like regular columns, once created, where users need not care whether it is a partitioned column or not unless optimization is required. Also, table schema need not have partition columns specified again as partitions create pseudo columns to query on. Inserting Data into Hive Tables

SHOW TABLES Databricks on AW

For certain actions, the ownership of the object (table/view/database) determines if you are authorized to perform the action. The user who creates the table, view or database becomes its owner. In the case of tables and views, the owner gets all the privileges with grant option. A role can also be the owner of a database Let's get a list of all the tables in MySQL for the database we have chosen. After it starts running, you can check its state and see what tables were ingested and the most recent timestamp (value) I'm running SAS 9.4 M6 on a 64 bit Windows Server 2016 machine. I have both Enterprise Guide (8.1) and Display Manager available to me, but I typically use EG. I'm connecting to a Hadoop database. I can create a Libname, or I can access the database via PROC SQL and explicit pass through. Both.

Impala SHOW Statement - Listing the Tables using Hue

I am looking for a query that return all the databases in my MySQL database (i.e. like SHOW DATABASES; but includes the number of tables in the tabular result.) Something that outputs: +-----.. Hive is a SQL engine on top of hadoop designed for SQL savvy people to run mapreduce jobs through SQL like queries. Hive allows developers to impose a logical relational schema on various file formats and physical storage mechanisms within or outside the hadoop cluster. SQL like queries are run against those schemas as Hadoop MapReduce jobs

HIVE SHOW PARTITIONS UnderstandingBigDat

table_exist = spark.sql('show tables in ' + database).where(col('tableName') == table).count() == 1 When we use insertInto we no longer need to explicitly partition the DataFrame (after all, the information about data partitioning is in the Hive Metastore, and Spark can access it without our help): Write Shell Script to generate able tables in Hive Database Second method uses a SHOW CREATE TABLE command to dump all tables DDL present in given database. Use SHOW CREATE TABLE command The SHOW CREATE TABLE command Hive provided table command that can be used when you want to generate DDL for the single Hive table

Installing Apache Hive in Ubuntu - Technology blogsHiveQL Queries | Data Types in Hive | Top 8 Types of

Summary: in this tutorial, you will learn how to use commands to list all tables of a database in various database management systems.. Each database system has its own command to show all tables in a specified database. Here you can find the respective SQL command to list all tables in MySQL, PostgreSQL, Oracle, SQL Server, DB2, and SQLite For e.g. consider the name attribute of a hive_table. In isolation, a name is not a unique attribute for a hive_table, because tables with the same name can exist in multiple databases. Even a pair of (database name, table name) is not unique if Atlas is storing metadata of hive tables amongst multiple clusters Create a Hive Table. NOTE: This task may be skipped if you have completed the Loading Data into Hive guide. Open the Hive Shell: Open the Hive shell so you can manually create a Hive table by entering 'hive' at the command line. Create the Table in Hive: You need a hive table to load the data to, so enter the following in the hive shell Steps to Get All Hive metastore information which is required for Manual Hive metadata migration. We need to get list of all Databases so that you can create them in a new cluster. Get Names, Location, Owner of each Database from DBS Table & Create the Database Create command

Top Hive Commands with Examples in HQL Edureka blo

You may want to run the SHOW DATABASES or SHOW SCHEMAS command to see a list of the configured storage plugins and workspaces in Drill before you issue the USE command to switch to a particular schema for your queries. In Drill, a database or schema is a storage plugin configuration that can include a workspace Defining new variables for Hive Session. -database <databasename> Specify the database to use in Hive Session -e <quoted-query-string> Running a Hive Query from the command line. -f <filename> Execute the hive queries from file -h <hostname> Connecting to Hive Server on remote host -p <port> Connecting to Hive Server on port numbe Hive tables For other file formats, such as JSON files, you can stage the input in Hive tables before using Oracle SQL Connector for HDFS. Oracle SQL Connector for HDFS uses external tables to provide Oracle Database with read access to Hive tables, and to delimited text files and Data Pump files in HDFS

Hive Table Learn How to Create Table in Hive with Query

Firebase is a traditional document storage database. You store data in collections that are like tables in a traditional database. These collections store documents. Documents store data types, like string, int, etc. They can also store a link to another document, so even though Firebase isn't strictly relational you can still create. Working with Hive Data Types, Creating and Managing Databases and Tables, Seeing How the Hive Data Manipulation Language Works, Querying and Analyzing Data Saying Hello to Hive Hive provides Hadoop with a bridge to the RDBMS world and provides an SQL dialect known as Hive Query Language (HiveQL), which can be used to perform SQL-like tasks Hive metastore is a relational database to manage the metadata of the persistent relational entities, e.g. databases, tables, columns, partitions in Hive. By default, Hive uses a built-in Apache Derby SQL server. Derby is a single process storage which means only one instance of Hive CLI will be supported by Derby By querying external tables, you can access data stored in HDFS and Hive tables as if that data was stored in tables in an Oracle database. Oracle Database accesses the data by using the metadata provided when the external table was created. Oracle Database 12.1.0.2 supports two new access drivers for Oracle Big Data SQL Populating an Oracle Database Table The data in the Hive table can be inserted into a database table using SQL. If the Hive table is large and will be frequently queried, the data should be loaded into the database, as external tables have no indexes and no partitioning. SQL> create table movie_fact_local as select * from movie_fact_ext_tab_hive

In Android, there are several ways to store persistent data. SQLite is one way of storing app data. It is very lightweight database that comes with Android OS. In Android, integrating SQLite is a tedious task as it needs writing lot of boilerplate code to store simple data SHOW TABLES¶ Lists the tables for which you have access privileges, including dropped tables that are still within the Time Travel retention period and, therefore, can be undropped. The command can be used to list tables for the current/specified database or schema, or across your entire account

no schemes no tables from server connection · Issue #6010

Hive - How to Show All Partitions of a Table

HI Team, I am working on reading hive table and send email in email body using shell script, can you please help on fixing the errors: I have 6 columns in my hive table and trying to send the email in the mail body. below script: #!/bin/bash hive -e 'SELECT count(*) from db.table' >.. If you have been using traditional databases like Oracle or any other RDBMS like MySQL and PostgreSQL, you must have used the data dictionary or the metadata. In most of the databases, the dictionary is a read-only set of tables that provide information about the database objects

Explain in detail about Data Visualizations? | i2tutorials

SHOW TABLES - Spark 3

Database: Database allows you to add new Databases and Tables. Furthermore, this view grants you access to advanced information about your databases. 4. Reports: This view allows you keep track of Read and Write operations, and shows you a Join Report of your tables. Take a few minutes to explore the various DAS sub-features. Create Hive Tables hive> Create database test; We can use the newly created database using the following query: hive> use test; To view the existing tables in any database use the following query : hive> show tables; For creating any external table (data is already present in HDFS), use the following query. Suppose we have transaction data present in HDFS at the. Apache Hive is an open-source data warehouse package that runs on top of an Apache Hadoop cluster. You can use Hive for batch processing and large-scale data analysis. Hive uses Hive Query Language (HiveQL), which is similar to SQL. ACID (atomicity, consistency, isolation, and durability) properties make sure that the transactions in a database are [ Hive also provides a pluggable programming model that allows you to specify custom interfaces and classes that support querying data residing in data sources like an Oracle NoSQL Database table. Oracle NoSQL Database Hadoop Integration Classes support running Hadoop MapReduce jobs and Hive queries against data stored in an Oracle NoSQL Database.

大数据-06-Spark之读写Hive数据 - 陈峰 - 博客园

Hive stores its database and table metadata in a metastore, which is a database or file backed store that enables easy data abstraction and discovery. Hive includes HCatalog, which is a table and storage management layer that reads data from the Hive metastore to facilitate seamless integration between Hive, Apache Pig, and MapReduce Problem statement and why is this interesting Incoming data is usually in a format different than we would like for long-term storage. The first step that we usually do is transform the data into a format such as Parquet that can easily be queried by Hive/Impala. The use case we imagined is when we are [ Hive 0.13.0 and above version support SHOW TRANSACTIONS command that helps administrators monitor various hive transactions. It is a relational database storing the metadata of hive tables, partitions, Hive databases etc. It is suggested to use standalone real database like PostGreSQL and MySQL. 69. When to use Map reduce mode Submit Hive queries in Hive command console. You can also first enter the Hive command console by running command hive in Hadoop Command Line, and then submit Hive queries in Hive command console. Here is an example. In this example, the two red boxes highlight the commands used to enter the Hive command console, and the Hive query submitted in Hive command console, respectively SHOW [FULL] TABLES [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TABLES lists the non-TEMPORARY tables in a given database. You can also get this list using the mysqlshow db_name command. The LIKE clause, if present, indicates which table names to match. The WHERE clause can be given to select rows using more general conditions, as discussed in Section 24.36, Extensions to SHOW. How to run Hive queries using shell script .sh file - Hive_SH.hq

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