# Index of transform table transformations

Below is the full index of transforms that can be used in a [transform table](../cards-transform-table/index.md).  Transforms are categorized by the *transform action type*, such as editing columns, filter data, joining data, operating and comparing values, or null/error handling.

You can browse transforms by category or simply search for a transform using free text. Learn more about [how to search for and add a transformation](../cards-transform-table/index.md#add-a-transformation).

Select a transform category below to see more details about how to use each transform in the category:

* [Edit columns](../cards-transform-table-index-edit-columns/index.md)
* [Group](../cards-transform-table-index-group/index.md)
* [Join](../cards-transform-table-index-join/index.md)
* [Filter](../cards-transform-table-index-filter/index.md)
* [Null/error handling](../cards-transform-table-index-null-error-handling/index.md)
* [Number operations](../cards-transform-table-index-number-operations/index.md)
* [Number comparisons](../cards-transform-table-index-number-comparisons/index.md)
* [String operations](../cards-transform-table-index-string-operations/index.md)
* [String comparisons](../cards-transform-table-index-string-comparisons/index.md)
* [Time operations](../cards-transform-table-index-time-operations/index.md)
* [Time comparisons](../cards-transform-table-index-time-comparisons/index.md)
* [Boolean operations](../cards-transform-table-index-boolean-operations/index.md)
* [Boolean comparisons](../cards-transform-table-index-boolean-comparisons/index.md)
* [Array operations](../cards-transform-table-index-array-operations/index.md)
* [Range operations](../cards-transform-table-index-range-operations/index.md)
* [Time series operations](../cards-transform-table-index-timeseries-operations/index.md)
* [User information](../cards-transform-table-index-user-info/index.md)
* [Functions](../cards-transform-table-index-functions/index.md)