Objective. I have few tables in hive that has same prefix like below.. temp_table_name temp_table_add temp_table_area There are few hundreds of tables like this in my database along with many other tables. Inserting data into Hive tables from queries. ... Use the following commands to show partitions in Hive: The following command will list all the partitions present in the Sales table: ... Are you sure you would like to use one of your credits to purchase this title?
You can escape the special character in Hive LIKE statements using ‘\’. Hive is used because the tables in Hive are similar to tables in a relational database. This feature allows you to escape the string with special character. So, in order to use these commands with all the options described below we need at least hive-0.14.0 release. For example, Hive table column value may contain a string that has embedded percentage (%) sign, in that case escape character functionality will allow you to ignore those during string matching. in this tutorial, we will discuss Impala Show Statements, i s used to get information about different types of Impala objects. In this post, we will discuss about Hive Database Commands (Create/Alter/Use/Drop Database) with some examples for each statement. hive> show partitions test_partition; OK dt =201412 dt =201413 dt =201601 dt =201602 dt =201603 Time taken: 0.171 seconds, Fetched: 5 row(s) Show Table… I cannot understand why I … As evident from the output below though there are tables that match the wildcard, the output from "show table extended like " does not contain the matches.
SHOW CREATE TABLE shows the CREATE TABLE statement used to create the given table.
The LIKE clause, if present on its own, indicates which table names to match. No Yes . Q 19 - The difference between the MAP and STRUCT data type in Hive is. 1. This feature allows you to escape the string with special character.
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). show tables in bank like '*cust*' It is returning the expected results like, which are the tables has a word cust in its name. LIKE 'pattern' Indicates which table names to match.
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 … Hive defines a simple SQL-like query language to querying and managing large datasets called Hive-QL ( … Internal tables Internal Table is tightly coupled in nature.In this type of table, first we have to create table and load the data. Return all tables. Q 19 - The difference between the MAP and STRUCT data type in Hive is. Hive is used because the tables in Hive are similar to tables in a relational database. All these commands and their options are from hive-0.14.0 release documentations. How to compare the column names in one table to the values in another in impala. Hive deals with two types of table structures like Internal and External tables depending on the loading and design of schema in Hive. FROM | IN. 1. 1) 'show tables;' is the standard SQL way of getting table names. Hi, Well my question is simple - I want to exclude tables with a certain prefix using this: SHOW TABLES NOT LIKE 'history%' With the prefix obviously being 'history'. SHOW INDEXES also shows … In pattern, * matches any number of characters. Return all tables in a database. What is HQL? '!tables' is specific to Beeline so use 'show tables;' to make sure your SQL is portable to other SQL clients. In Hive 0.8.0 and later releases, CREATE TABLE LIKE view_name creates a table by adopting the schema of view_name (fields and partition columns) using defaults for SerDe and file formats. 与Show Tables类似. 0. Show Partitions. Hive LIKE statement Escape Characters. 语法. ]table_name|view_name); Show Indexes (Version: Hive 0.7. Hive Show - 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
Hive Indexes and View with Example
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