> ## Documentation Index > Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt > Use this file to discover all available pages before exploring further. # Add fields to a table > Every column in AI Table is a field. Learn how to add, edit, hide, freeze, reorder, describe, and set defaults for fields. Every column in AI Table is called a **field**. Fields define the type and format of each column, keeping your data structured and consistent. ## A 2-minute intro to AI Table field types ## Primary field The first column of an AI Table is the **primary field** — it can't be deleted or hidden. In the latest AI Table, the primary field defaults to type **Doc**. See [Table as doc](/aitable/fields/field-types/table-as-doc) for details. ## Field list | Field type | Description | | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Standard fields** | | | Text | Plain text | | Single select / Multi-select | Tag records — one tag per cell (single) or multiple per cell (multi). To reuse the same option set across tables, build a master table of options and reference them via [single-select / multi-select option sync](/aitable/more/sync-select-options). | | Number | Numbers in various formats | | Currency | Multi-currency display | | Date | Dates and times in various formats | | Member | Assign people to records, tasks, or projects | | Image and attachment | Upload images and files of any type | | Progress | Display progress with a bar | | URL | A link, with an optional custom label | | Formula | Advanced computed column | | **Business fields** | | | Button | Trigger an automation by click | | Checkbox | A box to check — track to-dos, mark records "done" | | Phone | Store phone numbers — call or SMS in one tap on mobile | | Rating | Visual rating | | Email | Email addresses | | Barcode | | | Workflow | Customizable workflow stages (statuses) | | Group chat | Internal or external groups | | Administrative region | Quickly record location info or capture real-time geo | | ID number | | | Location | | | Signature | | | Rich text | Rich content (images, links, mixed formatting) | | **Advanced fields** | | | Lookup | | | One-way link | Link records from another table — click to view full row info | | Two-way link | Link from A to B — B mirrors back automatically | | Linked reference | Surface fields beyond the primary one in linked rows | | Auto number | Unique auto-incrementing IDs per record | | Created by | The record's creator (read-only) | | Created time | The record's creation time (read-only) | | Last modified by | The most recent editor (read-only) | | Last modified time | The most recent edit time (read-only) | ## Basics ### Add a field #### **Add a field / column in grid view** 1. Click the ➕ icon on the right of the title bar. 2. Type the field name and pick the type. #### **Add a field in other views** 1. **Kanban view** — click **Card config**; add the field at the bottom of the dialog. 2. **Gallery view** — click **Gallery config**; add the field at the bottom of the dialog. 3. **Calendar / Gantt view** — click **Field management**; add the field at the bottom of the dialog. #### **Add a field in form view** When adding a question, click the relevant **field type** to insert it; switch to **Edit mode** to edit. For form details, see [Form basics](/aitable/forms/form-basics). ### Edit a field Two ways to edit an existing field: 1. **Double-click** the field title to open the editor. 2. **Right-click** the field title — or hover and click the dropdown — pick **Edit field / column** in the menu. ### Hide / show fields Open [Field management](/aitable/fields/field-management) — click the icon on the right of the field name to **show / hide** it. Or right-click the field title (or hover and click the dropdown) — pick **Hide field / column**. ### Freeze fields / columns Right-click the field title (or hover and click the dropdown) — pick **Freeze up to this field / column**. Hover the **freeze line** and drag left / right to adjust the frozen range. Note: the **primary field** is frozen by default and can't be unfrozen. ### Reorder fields **Grid view** supports reordering. Drag the **field title** left / right to reorder. **Reorder in other views** Click **Field management** (or **Card config** / **Gallery config**), hold the field on the left and drag. Note: the primary field can't be moved. ### Edit a field's description Right-click the field title (or hover and click the dropdown) — pick **Edit field / column description**. Type the description and click **OK**. ### Set a field default 1. Double-click the field / column title to open the editor. 2. Type the default in the input or dropdown. 3. Click confirm to save. A default applies to the **whole table**, not just the current view. Most regular fields support defaults: title, number, currency, date, single-select, multi-select, rating, progress, member, group chat, URL, address, barcode, checkbox, department, location, phone, email, rich text. ## FAQ #### **Q: Why can't I delete or hide the first field?** A: AI Table's first field is the **primary field** — it can't be deleted, moved, replaced, or hidden, and other fields can't be promoted to primary. #### **Q: How do I show a hidden field?** A: Click **Field management** above the table — click the icon to the right of the field name to show / hide. #### **Q: How do I unfreeze a field?** A: Drag the **freeze line** to adjust the frozen range. The primary field can't be unfrozen, and unfreezing a single field is not yet supported. #### **Q: Can I center-align values in an AI Table field?** A: Not yet.