Table with Different Data Types In The Same Column

Steve_McQueen · June 28, 2022, 5:37pm

I’m currently using Ignition 8.1. And I’m having trouble creating a table where one column has more than one data type. Where the table looks like something below:

Tag Name | Data Type | Value | Timestamp

I’m simply having trouble even figuring out how to create such a table. Any examples would be appreciated.

Back story: We add continuously adding new tags in our field location, however some of the tags don’t need priority on the a main screen. But I would like the make a table that no matter now many tags get added there is always a place someone can look to see the value…specially if I can bind this table to a Tag Browser Tree should be nice.

PGriffith · June 28, 2022, 5:58pm

Ignition’s datasets, as a consequence of their Java structure, are strictly typed. You’ll have to manually create a dataset with an extremely broad type to allow any arbitrary value to be inserted; specifically you’ll want to use the DatasetBuilder Java class (search on the forums) to create the dataset and the java.lang.Object class as the type for the Value column.