Thanks Jacek Laskowski Sir.but i didn't get the point here
please advise the below one are you expecting:
dataset1.as("t1)
join(dataset3.as("t2"),
col(t1.col1) === col(t2.col1), JOINTYPE.Inner )
.join(dataset4.as("t3"), col(t3.col1) === col(t1.col1),
JOINTYPE.Inner)
.select("id",lit(referenceFiltered))
.selectexpr(
"id"
)
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