![]() Second scenario: Accessing raw data in databases through queries Failures due to source structure changes Any changes on the structure of the sources may cause errors during the transformation process.Several reports maintenance: If we can’t share the data model among several reports, we need to maintain each file.This can cause long refreshing times if there is a lot of data High refreshing times: When the report refreshes, all the historical data is transformed.Many steps: In a lot of cases we need to add many steps.No need for other tools: Power Query is capable of completing the whole proces.Anyone with few databases knowledge can make almost any transformation Easy to develop: Power query is intuitive and straightforward.We don't need any additional integration process Quick access to multiple types of sources: Power Query can access directly to a lot of different types of sources.This option can be applied with low resources in infrastructure, technology and techy knowledge. Power Query doesn’t have all the transformations that we would like with a couple of clicks, however with some coding and a few more steps, we can get virtually any transformation. Once in the editor we will add or remove columns, split or concatenate fields, replace values and/or add new ones, and so on, until we have a dataset shaped as we desire. We are going to access the data as it is. First Scenario: Accessing raw data directly using only Power Query Let’s see which Microsoft tool I would use depending on the conditions. We'll go from only using Power Query to the manipulating data entirely in SQL Server. In this article I want to compare four scenarios using Power Query and SQL Server. At different stages, you might ask, Power Query or SQL Server? The big questions are which one to use, when, and why? Now, this is not the only, nor necessarily the best, tool for all the steps of a report. With no doubt Power BI can do the job from beginning to end. Then confirm the operation in the appeared dialog.When it comes to developing a Power BI report, we can use it for accessing data, transforming the data, and turning the data into information using visuals. To drop an existing stored procedure, select it in the Object browser and use the menu item Others -> Stored Procedure -> Drop Stored Procedure. The template is similar to that used for a stored procedure creation. To alter an existing stored procedure, select it in the Object browser and use the menu item Others -> Stored Procedure -> Alter Stored Procedure or press F6.Ī template for the procedure alteration will appear in a separate tab of the SQL Window. To execute it you must use the CALL SQL-statement like 'call myproc()' or 'call myproc()'. When setting the DELIMITER to "$$" outside the Stored Procedure, SQLyog will understand that the complete CREATE PROCEDURE statement is a single statement.Īlso note that when you are executing this example you only create the Stored Procedure (the code is stored in the database itself). This explains why the delimiter needs to be changed (to "$$") outside the Stored Procedure before creating it - if not SQLyog (or any client) would 'think' that the SQL statement stops after the first line after "BEGIN" rather than "END". Inside a Stored Procedure the delimiter is always " ", here it cannot be changed. If there are more SQL statements here, then they should be separated by " " (semicolon). END sequence, which can be a valid SQL statement. To create a useful Stored Procedure there must be some code in between the BEGIN. As editor tabs of a special kind are used for stored procedures creation/alteration, pressing both F5 and Shift+F5 keys leads to execution of all queries present in the SQL window. Use the toolbar buttons or hotkeys to execute the queries. If you want to use the defaults just leave it commented out. Also the most common options are displayed in this template. ![]() Note that the template contains the command to drop the procedure before its creation is case it already exists. To create a new stored procedure, use the menu item Others -> Stored Procedure-> Create Stored Procedure or use the database context menu.Įnter the procedure name in the appeared dialog, and SQLyog will generate a template for your stored procedure in a separate tab of the SQL Window. Stored Procedures are implemented in the 5.0 version of MySQL Server, and you can work with them in full using SQLyog. This allows you to share the procedure between a number of programs. A Stored Procedure (also a Stored Proc) is a sub-program which is physically stored within a database in compiled form under a certain name.
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