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73 lines
596 B
Text
73 lines
596 B
Text
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n1
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1
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2
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NULL
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count(distinct n1)
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2
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n2
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11
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12
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13
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NULL
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count(distinct n2)
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3
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s
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one
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two
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NULL
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count(distinct s)
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2
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vs
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eleven
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twevle
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thirteen
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NULL
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count(distinct vs)
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3
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t
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eleven
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twelve
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foo
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bar
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NULL
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count(distinct t)
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4
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n1 n2
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1 11
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2 11
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2 12
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2 13
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NULL 13
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2 NULL
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count(distinct n1,n2)
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4
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n1 s
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1 one
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2 two
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NULL two
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2 NULL
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count(distinct n1,s)
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2
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s n1 vs
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one 1 eleven
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two 2 eleven
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two 2 twevle
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two 2 thirteen
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two NULL thirteen
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NULL 2 thirteen
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two 2 NULL
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count(distinct s,n1,vs)
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4
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s t
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one eleven
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two eleven
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two twelve
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two foo
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two bar
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NULL bar
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two NULL
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count(distinct s,t)
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5
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count(distinct n1) count(distinct n2)
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2 3
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