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This article explains how to use the CONCAT, JOIN, LEFT functions in MySQL using the app of MySQL in the SQL for Confluence (Pro Edition) app.

Instructions

Follow the steps:

1. Log into the Confluence instance.

2. Go to the required confluence page and edit the same.

3. Add Insert a SQL macro and go to the the Edit option  option to open the settingsmacro editor.
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4. Select the a Data source profile and write enter the required SQL query in SQL statement as shown in the below image. Follow this link to configure Data source profile.a.

   • CONCAT () - This function allows you to add two or more strings together.
     

     Code Block
     language sql
     SELECT user_name, CONCAT (display_name," ", active," ",created_date) AS Userdetails FROM cwd_user;

     
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    Click on

   • Click Save settings

    and Update

   •  in the macro editor and Update to save the page edits.
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   b.

   • JOIN - A JOIN clause is used to combine rows from two or more tables, based on

   a related column between

   • column(s) common to both of them.
     
     In

   the below

   • this example,

   we have joined

   • a join is used on two tables cwd_user and cwd_group.

   Displayed the

   • The result is displayed based on the common columns in both the tables.

     Code Block
     language sql
     SELECT user_name,last_name,group_name FROM cwd_user JOIN cwd_group on cwd_user.directory_id = cwd_group.directory_id;

     
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     Click on

   •   Click Save settings

    and Update

   •  in the macro editor and Update to save the page edits.
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   c.

   • LEFT () -

    This function

   •  This function is a string function that returns the left part of a string with a specified length. 
     

      

   • In

   the below

   • this example,

   the following

   • the statement uses the LEFT function to return the 10 leftmost characters of the string group_name. The long group_name can be displayed in a short form if required.
     

     Code Block
     language sql
     SELECT group_name, LEFT(group_name, 10) summary FROM cwd_group;

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   Click on
   • Click Save settings
    and Update
   •  in the macro editor and Update to save the page edits.
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