WitrynaCOMPUTE STATS Statement. The COMPUTE STATS statement gathers information about volume and distribution of data in a table and all associated columns and partitions. The information is stored in the metastore database, and used by Impala to help optimize queries. For example, if Impala can determine that a table is large or … Witryna30 sty 2024 · The easiest way to find all tables in SQL is to query the INFORMATION_SCHEMA views. You do this by specifying the information schema, then the “tables” view. Here’s an example. SELECT table_name, table_schema, table_type FROM information_schema.tables ORDER BY table_name ASC; This will show the …
Impala does not show data accurately after cluster... - Cloudera ...
Witryna17 mar 2015 · In Impala 2.9 and higher, the Impala DML statements (INSERT, LOAD DATA, and CREATE TABLE AS SELECT) can write data into a table or partition that resides in the Azure Data Lake Store (ADLS).ADLS Gen2 is supported in Impala 3.1 and higher.. In theCREATE TABLE or ALTER TABLE statements, specify the ADLS … Witryna28 sty 2015 · 1 Answer Sorted by: 1 By default, Teradata SQL Assistant will attempt to query the views DBC.Databses, DBC.Tables, DBC.Columns to populate the Database Explorer. It is possible in your environment that those objects are not accessible to developers or end users via the PUBLIC user. how many times has jason statham been married
I want to show all tables that have specified column name
WitrynaSHOW FILES Statement. The SHOW FILES statement displays the files that constitute a specified table, or a partition within a partitioned table. This syntax is available in CDH 5.4 / Impala 2.2 and higher only. The output includes the names of the files, the size of each file, and the applicable partition for a partitioned table. Witryna15 paź 2008 · You can use Oracle Data Dictionary to get information about oracle objects. You can get list of tables in different ways: select * from dba_tables. or for example: select * from dba_objects where object_type = 'TABLE'. Then you can get table columns using table name: select * from dba_tab_columns. Witryna19 wrz 2024 · You can use SHOW COLUMN STATS db.table_name and then pipe bash commands with it to get only the column names (1st field in the output) – philantrovert Sep 19, 2024 at 12:17 Add a comment 2 Answers Sorted by: 6 you can use describe db.tablename Share Improve this answer Follow answered Jan 18, 2024 at 12:50 … how many times has james bond been married