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content/blog/3-13-extended-data-validation/index.md

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+---
+title: "v3.13 Release: Extended Data Validation and Native Postgres Support"
+description: Data Controller now provides additional support for creating dynamic cell dropdowns as well as native Postgres support.
+date: '2021-09-06 09:00:00'
+author: 'Allan Bowe'
+authorLink: https://www.linkedin.com/in/allanbowe/
+previewImg: './validation1.png'
+tags:
+  - Data Quality
+  - Releases
+  - SAS
+---
+
+This release contains a number of small fixes and UI improvements, and two major features:
+
+* Extended Data Validations
+* Native Postgres Support
+
+
+## Extended Data Validations
+
+In the [previous release](/3-12-four-new-data-management-features) we provided a feature that allows a SAS developer to create a program (using the source row as input) to determine the values of a particular dropdown.
+
+This feature has now been extended, to allow the response to contain dropdowns for other cells in the same row.  Default values can also be provided for each additional dropdown.
+
+`video: [Retain Formulas when Loading Excel to SAS](https://www.youtube-nocookie.com/embed/rmES77aIr90)`
+
+To make this work, the SAS developer simply needs to write a SAS program that takes a source table named `work.source_row` (the row being edited) and creates two output tables:
+
+* `work.dynamic_values` - the first dropdown
+* `work.dynamic_extended_values` - the additional dropdowns, and any defaults.
+
+Your SAS Program (hook script) can be a file on the filesystem (in which case it must end with ".sas") or it can also be a Stored Process or Viya Job in the logical folder tree (metadata or SAS Drive) - in which case it must _not_ end with ".sas".  In both cases you should provide the full path and filename in the MPE_VALIDATIONS table.
+
+More info in [documentation](https://docs.datacontroller.io/dynamic-cell-dropdown).
+
+## Native Postgres Support
+
+Alongside Redshift and SQL Server we now have native support for Postgres.  What does this mean?
+
+Thanks to SAS/ACCESS engines, we can automatically support a very wide range of database engines.  However load times can become significant when the target contains millions (or billions) of rows.
+
+In order to provide "native" support we update our load process to 'inject' a temporary table using SQL passthrough, which results in significantly faster updates for certain load types, such as SCD2.
+
+<hr>
+
+Did you know Data Controller (Community Edition) is free, for unlimited users? [Contact us](/contact) for your copy!