Here's my sample data and sample script
Data Table( "sample2" ) << Join(
With( Data Table( "sample1" ) ),
By Matching Columns( :SliderSN = :SliderSN, :STO_I1 = :STO_I1, :STO_I2 = :STO_I2 ),
Drop multiples( 0, 0 ),
Include Nonmatches( 1, 0 ),
Preserve main table order( 1 )
)