A Table Field describes a single column of a table record (see Table Record for details).

Field Properties

Table ID	Fields are tied to a table. This is implicit in the UI.
Unique Name	A unique name for a column that cannot change after creation. This is not visible in the UI, but is relevant when accessing the Tulip API.
Label	The display name of the field. This is shown in the UI. This property can be changed after a field is created.
Description	A short description of the field which can be added by the user.
Order	The order fields are displayed. This is implicit in the UI.
Field type	Entries in this field must be of this data type. See Field Types below for a full list. Cannot be changed after the field is created.
Hidden	When archiving fields from a table, they are hidden in the UI. Archived fields can be viewed or restored, along with the corresponding data.
Unique	Only true for the ID field. Displays an error to the user if they ever tries to create a record with a duplicate value in this field.
Table Link (Linked Record field type only)	The table that the Linked Record field is linked to

System Fields

All tables have a unique ID field which is added automatically and cannot be edited. The unique ID for a give Table Record is provide by the user and:

must be unique across all records in this table
is always data type "Text"
must be specified when adding a record, and cannot be edited after the record is created.

All tables also have two metadata fields “Date Created” and “Date Updated”. These are datetime fields that cannot be directly edited by the user, only viewed. They track when the record was created and last updated respectively. By default, these fields are not visible. To see them, a user needs to toggle “View Metadata Fields”.

User Specified Fields

Users can specify up to 197 custom fields. Each field will have a user specified data type, described below. A record may or may not have an entry for any given field.

Can be created and archived from the UI.
Users specify the label, type, and description for their field. Label and description can be edited after the field is created, but type cannot.
All user specified fields are optional, as in a record can either have a value for a given field or leave it blank.
All user specified fields are not unique, so multiple records in the same table can have the same value for a given user specified field.
Archived fields can be restored.
A table can have no more than 197 user specified fields (200 total column max).

Field Types

Type	Description
Text	Sometimes known as a string, this corresponds to the “text” type in postgres and can include any series of characters. The only restriction is that it must be less than 1 Gb as enforced by Postgres.
Number	Otherwise known as a float, corresponds to a Postgres “double precision”. It can represent any real number with 15 decimal digits of precision.
Boolean	A true of false value. Commonly displayed as a localized “Yes” or “No” in the UI.
Integer	A number without a decimal point. Uses the Postgres “bigint” type. It can represent an integer between -9,223,372,036,854,775,808 and 9,223,372,036,854,775,807
Interval	An interval of time. Internally, we represent this as a decimal number of seconds, though we often display with an hour:minutes:seconds.milliseconds format.
Image	A URL of an image. Users can manually enter a URL or upload the image to our storage.
User	A string corresponding to the ID of a user within this Tulip instance
Datetime	A Postgres “timestamp with time zone”, this is a specific time on a specific day. By convention, a day with time midnight is often used to refer to whole days.
Color	An RGB color corresponding to the standard CSS representation for that color. How To Specify Color Value
Linked Record	A link to the ID field of another table with one of four types of mappings: One to One, One to Many, Many to One, Many to Many
Video	A URL of a video. Users can manually enter a URL or upload the video to our storage.
Machine	A link to a single [Machine](/models/M_MACH) within Tulip.

Additional Information on Linked Record Fields

Linked Record fields provide additional options within Triggers. The following options are available from the 'Table Linked Record Field' menu option within the 'If, If/Else' clause of a Trigger:

Name	Description
Is Linked To	Returns `true` if a placeholder field is linked to another placeholder
Is Not Linked To	Returns `true` if there are no links between two placeholders
Has Links	Returns `true` if a placeholder field has any links
Has no Links	Returns `true` if a placeholder field does not have any links

Tests

ID	Name
QA-T84	Table Management : 05 - Add columns to a table
QA-T85	Table Management : 06 - Edit a table column
QA-T86	Table Management : 07 - Edit a table column description
QA-T87	Table Management : 08 - Delete a table column
QA-T88	Table Management : 09 - Restore a deleted table column
QA-T89	Table Management : 10 - Reorder table columns
QA-T93	Table Management : 13 - Sort table records by column in table view
QA-T242	Embedded Tables : 02 - Sort an embedded table
QA-T245	Embedded Tables : 05 - Handle deleted fields in embedded tables
QA-T464	Tables CSV Import : 01 - Import to table
QA-T467	Tables CSV Import : 03 - Import from export
QA-T702	Table Management : 05 / Table Columns must be named
QA-T705	Table Management : 06 / Table Columns labels cannot be blank and ID cannot be edited

Requirements

No requirements