Prompt
Answer
-- Function: join_fact_tables
-- Purpose: Join two fact tables using a common key column
-- Parameters:
-- @fact_table1: Name of the first fact table
-- @fact_table2: Name of the second fact table
-- @key_column: Common key column to join the tables on
-- Returns: Joined fact table
CREATE OR REPLACE FUNCTION join_fact_tables (
@fact_table1 varchar(255),
@fact_table2 varchar(255),
@key_column varchar(255)
)
RETURNS TABLE (
joined_fact_table fact_table_type
)
AS $$
BEGIN
-- Create a dynamic query to join the fact tables
EXECUTE FORMAT('SELECT * FROM %I JOIN %I ON %I.%I = %I.%I', @fact_table1, @fact_table2,
@fact_table1, @key_column, @fact_table2, @key_column)
INTO joined_fact_table;
RETURN;
END;
$$ LANGUAGE plpgsql;
Description
This SQL function called join_fact_tables
is designed to join two fact tables using a common key column. The function takes three parameters: fact_table1
which is the name of the first fact table, fact_table2
which is the name of the second fact table, and key_column
which is the common key column to join the tables on.
The function returns a joined fact table, represented as joined_fact_table
. It creates a dynamic query using the EXECUTE FORMAT
statement, where the names of the fact tables and the key column are inserted into the query string. The query performs an inner join on the two fact tables based on the common key column.
Once the join is executed, the result is stored into the joined_fact_table
variable. Finally, the function returns the joined fact table.
More Code Generators
![Apache Flink Code Generator](https://fs.enterprisedna.co/library/icons/flink.png)
![Apache Pig Code Generator](https://fs.enterprisedna.co/library/icons/apache_pig.png)
![Azure Data Factory Code Generator](https://fs.enterprisedna.co/library/icons/azure-data-factory.png)
![C/C++ Code Generator](https://fs.enterprisedna.co/library/icons/c_c_plus.png)
![CouchDB Code Generator](https://fs.enterprisedna.co/library/icons/couchdb.png)
![DAX Code Generator](https://fs.enterprisedna.co/library/icons/power-bi.png)
![Excel Code Generator](https://fs.enterprisedna.co/library/icons/excel.png)
![Firebase Code Generator](https://fs.enterprisedna.co/library/icons/firebase.png)
![Google BigQuery Code Generator](https://fs.enterprisedna.co/library/icons/google_bigquery.png)
![Google Sheets Code Generator](https://fs.enterprisedna.co/library/icons/google_sheets.png)
![GraphQL Code Generator](https://fs.enterprisedna.co/library/icons/graphql.png)
![Hive Code Generator](https://fs.enterprisedna.co/library/icons/hive.png)
![Java Code Generator](https://fs.enterprisedna.co/library/icons/java.png)
![JavaScript Code Generator](https://fs.enterprisedna.co/library/icons/javascript.png)
![Julia Code Generator](https://fs.enterprisedna.co/library/icons/julia.png)
![Lua Code Generator](https://fs.enterprisedna.co/library/icons/lua.png)
![M (Power Query) Code Generator](https://fs.enterprisedna.co/library/icons/m.png)
![MATLAB Code Generator](https://fs.enterprisedna.co/library/icons/matlab.png)
![MongoDB Code Generator](https://fs.enterprisedna.co/library/icons/mongodb.png)
![Oracle Code Generator](https://fs.enterprisedna.co/library/icons/oracle.png)
![PostgreSQL Code Generator](https://fs.enterprisedna.co/library/icons/postgresql.png)
![Power BI Code Generator](https://fs.enterprisedna.co/library/icons/power-bi.png)
![Python Code Generator](https://fs.enterprisedna.co/library/icons/python.png)
![R Code Generator](https://fs.enterprisedna.co/library/icons/r.png)
![Redis Code Generator](https://fs.enterprisedna.co/library/icons/redis.png)
![Regex Code Generator](https://fs.enterprisedna.co/library/icons/regex.png)
![Ruby Code Generator](https://fs.enterprisedna.co/library/icons/ruby.png)
![SAS Code Generator](https://fs.enterprisedna.co/library/icons/sas.png)
![Scala Code Generator](https://fs.enterprisedna.co/library/icons/scala.png)
![Shell Code Generator](https://fs.enterprisedna.co/library/icons/shell.png)
![SPSS Code Generator](https://fs.enterprisedna.co/library/icons/spss.png)
![SQL Code Generator](https://fs.enterprisedna.co/library/icons/sql.png)
![SQLite Code Generator](https://fs.enterprisedna.co/library/icons/sqlite.png)
![Stata Code Generator](https://fs.enterprisedna.co/library/icons/stata.png)
![Tableau Code Generator](https://fs.enterprisedna.co/library/icons/tableau.png)
![VBA Code Generator](https://fs.enterprisedna.co/library/icons/vba.png)