hive show all tables and columns in database


CREATION_TIME. Hive keeps adding new clauses to the SHOW PARTITIONS, based on the version you are using the syntax slightly changes. Hive SHOW PARTITIONS list all the partitions of a table in alphabetical order. The following examples demonstrate the steps that you can follow when you want to issue the SHOW TABLES command on the file system, Hive, and HBase. If no column is provided, all matching columns and column types in the table are shown. After reading this article, you should have learned how to create a table in Hive and load data into it. Viewing Hive Schema and Table Metadata. NO_OF_COLS. may i know how can i do that ? i am trying to get the list of tables and columns using a single query. If no database is provided, a list of database names are displayed. The hive metastore DB is a normal MySQL/etc database with a hive schema in it. You can issue the SHOW FILES command to see a list of all files, tables, and views, including those created in Drill. DATE. OWNER. VARCHAR2(4000) Hive table name. Time that the Hive table was last accessed. Hive stores the schema of the Hive tables in a Hive Metastore. in this tutorial, we will discuss Impala Show Statements, i s used to get information about different types of Impala objects. LOCATION. In Hive terminology, external tables are tables not managed with Hive. Hive Describe - Learn Hive in simple and easy steps from basic to advanced concepts with clear examples including Introduction, Architecture, Installation, Data Types, Create Database, Use Database, Alter Database, Drop Database, Tables, Create Table, Alter Table, Load Data to Table, Insert Table, Drop Table, Views, Indexes, Partitioning, Show, Describe, Built-In Operators, Built-In Functions I am looking for something like ex: 'select * from dbc.columns where tables like 'E%' How do we achive that in hive? There is also a method of creating an external table in Hive. Creation time of the Hive table. 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. Examples. LAST_ACCESSED_TIME. TABLE_NAME. I recently had to sync the schemas from a hive database to a normal MySQL database for reasons I won’t bother going into. HiveSQL is a free service that provides us with ability to retrieve Hive blockchain data in a fast and easy manner. Number of columns in the Hive table. In our last Impala tutorial, we learned to create table statements, drop table statements in Impala. I… by geekgirl HiveSQL with Python: Tables and Columns — Hive Their purpose is to facilitate importing of data from an external file into the metastore. VARCHAR2(4000) Physical location of the Hive table. Objective. Syntax: SHOW PARTITIONS [db_name. You cannot create Hive or HBase tables in Drill. If no table is given, all matching tables in the database are displayed. By default, the metastore is run in the same process as the Hive service and the default Metastore is DerBy Database. The exercise required me to get all columns from all tables in hive for each DB though, and I found that this was not amazingly straight-forward. Metastore is used to hold all the information about the tables and partitions that are in the warehouse. NUMBER. By running the following command on HIVE metastore db, we can easily find all the database and tables. Hive database where the Hive table resides. 1. Hive SHOW PARTITIONS Command. DATE. 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..