> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/cascade-faqs.md).

# Cascade FAQs

<figure><img src="/files/n3k4A0FWJeqNaZ6Vvlob" alt=""><figcaption></figcaption></figure>

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

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>💬 How to add a total row to a table</td><td><a href="/files/hP66v4MQd27AvJhnSwf8">/files/hP66v4MQd27AvJhnSwf8</a></td><td><a href="/pages/t730AG1yt0JIHX1kKQ41">/pages/t730AG1yt0JIHX1kKQ41</a></td></tr><tr><td>💬 How to leave comments on a workflow</td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td><td><a href="/pages/jZwce4ClUaHQuNfK4fiG">/pages/jZwce4ClUaHQuNfK4fiG</a></td></tr><tr><td>💬 How to add new columns in the Edit Columns tool</td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td><td><a href="/pages/OjPuQW1FZnsfwVAAbUYf">/pages/OjPuQW1FZnsfwVAAbUYf</a></td></tr><tr><td>💬 Setting up a New Table tool</td><td><a href="/files/kaf4y61gafdJhEwxVMbX">/files/kaf4y61gafdJhEwxVMbX</a></td><td><a href="/pages/WfyIaZ1ZPITMmAYBBlPi">/pages/WfyIaZ1ZPITMmAYBBlPi</a></td></tr><tr><td>💬 How to rename a tool</td><td><a href="/files/qgAUUrHt8lyc0a3MS8Hz">/files/qgAUUrHt8lyc0a3MS8Hz</a></td><td><a href="/pages/t8m43RySMuRTJAmnkTjn">/pages/t8m43RySMuRTJAmnkTjn</a></td></tr></tbody></table>
{% endtab %}

{% tab title="Knowledge Based" %}

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>💬 How to change Data Types in Cascade</td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td><td><a href="/pages/lCXJxSIjHKJb0gLYKiXE">/pages/lCXJxSIjHKJb0gLYKiXE</a></td></tr><tr><td>💬 How to remove columns from a table in Cascade</td><td><a href="/files/zlYPlxRlxNWKlxjWDgER">/files/zlYPlxRlxNWKlxjWDgER</a></td><td><a href="/pages/qXmCbebLDCZbi2pHmRHE">/pages/qXmCbebLDCZbi2pHmRHE</a></td></tr><tr><td>💬 How to rename columns in Cascade</td><td><a href="/files/YZ1JzwGtkQ1Kg3PwFGTa">/files/YZ1JzwGtkQ1Kg3PwFGTa</a></td><td><a href="/pages/kC6H9QPLqn5tlk2Bh97m">/pages/kC6H9QPLqn5tlk2Bh97m</a></td></tr><tr><td>💬 How to connect tools to each other</td><td><a href="/files/BDhi3UFz9mWLRLh5Yoo5">/files/BDhi3UFz9mWLRLh5Yoo5</a></td><td><a href="/pages/J9yEgOJcpzDgCpaZJSRu">/pages/J9yEgOJcpzDgCpaZJSRu</a></td></tr></tbody></table>
{% endtab %}
{% endtabs %}

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

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td>💬 How to Import an Excel File into Cascade</td><td><a href="/pages/atHs9vVHDEtM5HVjS3vq">/pages/atHs9vVHDEtM5HVjS3vq</a></td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td></tr><tr><td>💬 How to Import a CSV File into Cascade</td><td></td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td></tr><tr><td>💬 How to import a CSV file into the Data Locker</td><td><a href="/pages/cjrUGKf75jKPjpa0h0dy">/pages/cjrUGKf75jKPjpa0h0dy</a></td><td><a href="/files/GuIFtSIIkBTalvQ8MGxz">/files/GuIFtSIIkBTalvQ8MGxz</a></td></tr></tbody></table>
{% endtab %}
{% endtabs %}

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

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td>💬 How to Remove null Records with a Filter tool</td><td><a href="/pages/SP8luJHzMUFCcJyp9TUT">/pages/SP8luJHzMUFCcJyp9TUT</a></td><td><a href="/files/tCiQH4A8DpRnCP0UKuuY">/files/tCiQH4A8DpRnCP0UKuuY</a></td></tr><tr><td>💬 How to write an IF Statement in Cascade</td><td><a href="/pages/eTMwxQD3PjlVJIheaGRi">/pages/eTMwxQD3PjlVJIheaGRi</a></td><td><a href="/files/4a52gv02ApQsNSGMNbei">/files/4a52gv02ApQsNSGMNbei</a></td></tr><tr><td>💬 How to write an IN() statement with multiple variables</td><td><a href="/pages/ceLLUYVrHzV8TVeSAXow">/pages/ceLLUYVrHzV8TVeSAXow</a></td><td><a href="/files/JkBssPFBH5dqvpLu0gA7">/files/JkBssPFBH5dqvpLu0gA7</a></td></tr><tr><td>💬 How to replace null values with 0</td><td><a href="/pages/bmh6aieXCwKSIiJL0OKD">/pages/bmh6aieXCwKSIiJL0OKD</a></td><td><a href="/files/odtcbHmohJgIvKYiTFFW">/files/odtcbHmohJgIvKYiTFFW</a></td></tr><tr><td></td><td></td><td></td></tr></tbody></table>
{% endtab %}
{% endtabs %}

#### Troubleshooting

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>⚠️ What does it mean if my workflow won’t load?</td><td><a href="/pages/eYtFLt13IDBpjZMx2agh">/pages/eYtFLt13IDBpjZMx2agh</a></td></tr><tr><td>⚠️ Why can’t I connect my tool to other tools?</td><td><a href="/pages/qu0RApoeC2TULF9pWn7G">/pages/qu0RApoeC2TULF9pWn7G</a></td></tr><tr><td>⚠️ Why are there duplicate records after my Join tool?</td><td><a href="/pages/gzDuq1wGVVmDs1NmZYQT">/pages/gzDuq1wGVVmDs1NmZYQT</a></td></tr></tbody></table>

Still have questions? Please reach out to <support@cascade.io>.