HCatalog - Show Tables


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You often want to list all the tables in a database or list all the columns in a table. Obviously, every database has its own syntax to list the tables and columns.

Show Tables statement displays the names of all tables. By default, it lists tables from the current database, or with the IN clause, in a specified database.

This chapter describes how to list out all tables from the current database in HCatalog.

Show Tables Statement

The syntax of SHOW TABLES is as follows −

SHOW TABLES [IN database_name] ['identifier_with_wildcards'];

The following query displays a list of tables −

./hcat –e "Show tables;"

On successful execution of the query, you get to see the following response −

OK
emp
employee
Time taken: 5.3 seconds


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