Code refactoring

Rename database objects

1. Place the caret at the object that you want to rename.

2. Navigate to Refactor | Rename Shift+F6. If you edit an argument in the function, you can start typing a new name inline, or press Shift+F6 twice to invoke the Rename dialog.

   If you rename the element inline, you can click icons near the element, and select whether you want to rename it in comments and strings or all the text occurrences.

   

3. In the Rename dialog, type a new name for the object.

4. Review changes and click Refactor. To search for usages of the object name, click Preview.

   

Rename code in place

1. In the editor start renaming a column, a variable, or any other code element. DataGrip will display in the gutter.

2. Click the gutter icon or press Alt+Enter and apply a suggestion.

   

   DataGrip renames the code element and updates its usages accordingly.

   

Extract a variable

1. Place the caret at a variable in the function.

2. Navigate to Refactor | Introduce Variable (Control+Alt+V).

3. Select a part of the expression that you want to extract and press Enter.

   

Extract as a Common Table Expression (CTE)

CTE is a temporary result set that you can use within another SELECT, INSERT, UPDATE, or DELETE statements. In DataGrip you can extract a subquery and convert it to CTE.

1. Place the caret inside the subquery that you want to convert.

2. Go to Refactor | Extract/Introduce | Subquery as CTE.

   

Extract queries as a table function

1. Select a query that you want to extract as a table function.

2. Right-click a selection and select Refactor | Extract Routine. Alternatively, press Control+Alt+M.

3. In the Name field, type the routine's name.

4. In the Parameters field, select or clear checkboxes for parameters that you want to use.

   

Preview refactoring changes

For some refactorings, DataGrip lets you preview the changes before applying them.

1. Click Preview in the Refactoring Preview dialog to see potential changes (the list of usages where the refactoring will be performed).

2. In the Find tool window that opens, check the changes that are going to be made. You can exclude Delete or remove Control+X changes that you consider unnecessary.

3. Click Do Refactor to proceed with the changes.