# Cascade FAQs

{% tabs %} {% tab title="Best Practices" %}


💬 How to add a total row to a table	total row-5.png	how-to-add-a-total-row-to-a-table
💬 How to leave comments on a workflow	cover-arcade.png	how-to-leave-comments-on-a-workflow
💬 How to add new columns in the Edit Columns tool	cover-arcade.png	how-to-add-new-columns-in-the-edit-columns-tool
💬 Setting up a New Table tool	Setting up a New Table tool-3.png	setting-up-a-new-table-tool
💬 How to rename a tool	rename tools in the tool configuration.png	how-to-rename-a-tool

{% endtab %} {% tab title="Knowledge Based" %}


💬 How to change Data Types in Cascade	cover-arcade.png	how-to-change-data-types-in-cascade
💬 How to remove columns from a table in Cascade	remove columns from a table with a select columns tool.png	how-to-remove-columns-from-a-table-in-cascade
💬 How to rename columns in Cascade	rename fields in cascade with edit columns.png	how-to-rename-columns-in-cascade
💬 How to connect tools to each other	How to connect tools to each other-cover.png	how-to-connect-tools-to-each-other

{% endtab %} {% endtabs %} {% tabs %} {% tab title="Import" %}


💬 How to Import an Excel File into Cascade	how-to-import-an-excel-file-into-cascade	cover-arcade.png
💬 How to Import a CSV File into Cascade		cover-arcade.png
💬 How to import a CSV file into the Data Locker	how-to-import-a-csv-file-into-the-data-locker	cover-arcade.png

{% endtab %} {% endtabs %} {% tabs %} {% tab title="Functions and Expressions" %}


💬 How to Remove null Records with a Filter tool	how-to-remove-null-records-with-a-filter-tool	filter tool configuration with isnull function.png
💬 How to write an IF Statement in Cascade	how-to-write-an-if-statement-in-cascade	How to write an IF Statement in Cascade-1.png
💬 How to write an IN() statement with multiple variables	how-to-write-an-in-statement-with-multiple-variables	use-two-variables-in-in-statement.png
💬 How to replace null values with 0	how-to-replace-null-values-with-0	Replace null values with 0-3.png

{% endtab %} {% endtabs %} #### Troubleshooting


⚠️ What does it mean if my workflow won’t load?	what-does-it-mean-if-my-workflow-wont-load
⚠️ Why can’t I connect my tool to other tools?	why-cant-i-connect-my-tool-to-other-tools
⚠️ Why are there duplicate records after my Join tool?	why-are-there-duplicate-records-after-my-join-tool

Still have questions? Please reach out to .