Toolkit Manual - Labview Database Connectivity
If your manual is for an older toolkit (pre-2015), consider that NI has deprecated some VIs like DB Tools List Columns.vi . Always cross-reference with the latest help files.
The manual dedicates a full chapter to this because it is the #1 source of errors. labview database connectivity toolkit manual
Use DB Tools Select Data.vi . This returns a 2D variant array. Use DB Tools Variant To Data.vi to cast to numeric or time-stamp arrays. If your manual is for an older toolkit
A: Missing/incorrect 32-bit DB driver — install from vendor. labview database connectivity toolkit manual