spark sql

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Merging datas using spark sql with two conditions.
my code:
1.merge with first condition
2.merge with second condition
3. 1.unionall(2)
This gives some extra datas(total=10000 and result=10220)
$better way?any way?

undefined

bug

Merging datas using spark sql with two conditions. my code: 1.merge with first condition 2.merge with second condition 3. 1.unionall(2) This gives some extra datas(total=10000 and result=10220) $better way?any way?

undefined

spark sql

bug

Merging datas using spark sql with two conditions.
my code:
1.merge with first condition
2.merge with second condition
3. 1.unionall(2)
This gives some extra datas(total=10000 and result=10220)
$better way?any way?