Tabli - How to copy the data definition of all tables from a star/snowflake schema

About

This Howto will show you how to copy the data definition of all SQL tables from a star/snowflake schema by using the Tabli data create command.

Steps

Prerequisites

You should have Tabulify installed on your computer. Learning Tabulify - Step 1 - Installation

Select the fact table

The trick to copy a star/snowflake schema is:

• to give the fact table (ie the table at the center of the star/snowflake schema) to the Tabli table create command
• and to ask to create it with its dependencies.

Create the fact table with its dependencies

tabli data drop --not-strict *@sqlite

The below command will create:

• the table store_sales from the tpcds system. This is the fact table of the tpcds store schema.
• with all its dependencies (all the foreign tables)
• into the Sqlite Howto connection with the prefix tpc_ using wildcard back referencing in the target
• with the tabli data create command.

tabli data create --with-dependencies store_sales@tpcds tpc_$0@sqlite

The list of data resources created
uri
---------------------------------
tpc_customer@sqlite
tpc_customer_address@sqlite
tpc_customer_demographics@sqlite
tpc_date_dim@sqlite
tpc_household_demographics@sqlite
tpc_income_band@sqlite
tpc_item@sqlite
tpc_promotion@sqlite
tpc_store@sqlite
tpc_store_sales@sqlite
tpc_time_dim@sqlite

List the created tables

With the tabli data list command, we can list the tables created with the tpc prefix.

tabli data list -a name -a count tpc*@sqlite

count
-----
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0

Next

You can fill them with generated data.

How to fill a schema with generated data