How to write SQL QUERY TO JOIN Comma Separated Values?

Question

Aryan Kumar · Answer

Sure, here is how to write a SQL query to join comma separated values:

SQL

SELECT
  CONCAT_WS(', ', values) AS joined_values
FROM
  (
    SELECT
      value
    FROM
      my_table
    WHERE
      column_name IN ('value1', 'value2', 'value3')
  ) AS t;

This query will first select all of the values from the my_table table where the column_name column is equal to value1, value2, or value3. The CONCAT_WS() function will then join the values with commas.

The results of the query will be a single column called joined_values that contains the comma separated values.

Here is an explanation of the query:

The SELECT statement specifies the columns that you want to return. In this case, you want to return the joined_values column.
The CONCAT_WS() function joins the values with commas. The CONCAT_WS() function takes three arguments: the separator, the first value, and the rest of the values.
The IN operator checks if a value is in a list of values. In this case, the IN operator is checking if the column_name column is equal to value1, value2, or value3.
The FROM clause specifies the table that you want to select the data from. In this case, you want to select the data from the my_table table.

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How to write SQL QUERY TO JOIN Comma Separated Values?

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