Select the slice you want to copy in the Data panel.When you copy a slice, by default the slice is named slicename n, where n is incremented by 1 each time you copy the slice. The following provides an example of a completed slice in the National Parks app that uses an expression. To provide read-only access, click Read-only. To enable changes, select one or more of the following: Updates, Adds, and Deletes. For details, see Slice columns.Īctions to be included in the slice. Select All Columns or Custom to select each column individually. For details, see Slice row filter conditions.Ĭolumns to include in the slice. SettingĮxpression that determines whether a row should be included in the slice. Watch a videoĪppSheet understands user intent and recommends slice configurations that align with what you are trying to achieve.Ĭonfigure the slice by using the settings described in the following table. Remember, once you define the slice, you still need to use this slice in a UX view. For this usage scenario, slices usually use row filters but do not subset the columns or actions. However, if you only want to see their first name and phone number in a view, you can create a slice that filters out all the columns in the person table except for first name and phone number.Īnother use for slices is to define a logical subset of a table that can then be used in other expressions (such as a Valid_If column constraint or in an automation workflow). For instance, if you have a table that's a list of people, you might have columns for their first name, last name, birthday, address, and phone number. Slices are most useful when you want to create a UX view of part of a table. In fact, it's common to subset just the rows or just the columns or actions as appropriate. It's important to note that a slice does not need to subset rows, columns, and actions. The subset of actions it retains from the table (optional). ![]() The subset of columns it retains from the table (optional).The subset of rows it retains from the table (optional).The Core Methods There are following three core methods defined in the spec that I am going to cover in this tutorial openDatabase This method creates the database object either using existing database or creating new one. Does the slice permit adds, deletes, and updates? (required) Web SQL Database will work in latest version of Safari, Chrome and Opera.Instead, you can slice the data, choosing a subset of the rows, columns, and actions.Ī slice is a subset of the rows, columns, and actions of a table. When you show the contents of a table in your app, you do not need to show every row, every column, and every action.
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