Advanced Analytics interview questions

1. A.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
3. C.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
4. D.a function that returns the value from the first row of the current window frame

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1. A.PERCENT_RANK
2. B.Window frame clause
3. C.FIRST_VALUE
4. D.CUME_DIST

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1. A.Window frame clause — the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.Window frame clause — a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
3. C.Window frame clause — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
4. D.Window frame clause — a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one

Answer + AI explanation with Pro

1. A.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.a function that returns the value from the first row of the current window frame
3. C.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
4. D.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number

Answer + AI explanation with Pro

1. A.Named window
2. B.NTILE
3. C.PERCENT_RANK
4. D.Default window frame

Answer + AI explanation with Pro

1. A.NTILE — the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.NTILE — a function that returns the value from the first row of the current window frame
3. C.NTILE — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
4. D.NTILE — a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number

Answer + AI explanation with Pro

1. A.a function that returns the value from the first row of the current window frame
2. B.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
3. C.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
4. D.the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY

Answer + AI explanation with Pro

1. A.Window frame clause
2. B.FIRST_VALUE
3. C.CUME_DIST
4. D.Default window frame

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1. A.FIRST_VALUE — a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one
2. B.FIRST_VALUE — a function giving the cumulative distribution, the fraction of partition rows with a value less than or equal to the current row
3. C.FIRST_VALUE — a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
4. D.FIRST_VALUE — a function that returns the value from the first row of the current window frame

Answer + AI explanation with Pro

1. A.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
2. B.a function giving the cumulative distribution, the fraction of partition rows with a value less than or equal to the current row
3. C.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
4. D.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes

Answer + AI explanation with Pro

1. A.Default window frame
2. B.Named window
3. C.FIRST_VALUE
4. D.CUME_DIST

Answer + AI explanation with Pro

1. A.CUME_DIST — a function giving the cumulative distribution, the fraction of partition rows with a value less than or equal to the current row
2. B.CUME_DIST — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
3. C.CUME_DIST — a function that returns the value from the first row of the current window frame
4. D.CUME_DIST — a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one

Answer + AI explanation with Pro

1. A.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
3. C.a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one
4. D.a function that returns the value from the first row of the current window frame

Answer + AI explanation with Pro

1. A.CUME_DIST
2. B.Named window
3. C.PERCENT_RANK
4. D.FIRST_VALUE

Answer + AI explanation with Pro

1. A.PERCENT_RANK — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
2. B.PERCENT_RANK — a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
3. C.PERCENT_RANK — a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one
4. D.PERCENT_RANK — a reusable window specification declared once in a WINDOW clause and referenced by name across several functions

Answer + AI explanation with Pro

1. A.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
2. B.the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
3. C.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
4. D.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number

Answer + AI explanation with Pro

1. A.CUME_DIST
2. B.Default window frame
3. C.PERCENT_RANK
4. D.FIRST_VALUE

Answer + AI explanation with Pro

1. A.Default window frame — the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
2. B.Default window frame — a function giving the relative rank of a row as its rank minus one divided by the number of partition rows minus one
3. C.Default window frame — a function that returns the value from the first row of the current window frame
4. D.Default window frame — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY

Answer + AI explanation with Pro

1. A.a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
2. B.the part of a window definition that uses ROWS or RANGE to bound which surrounding rows the calculation includes
3. C.a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
4. D.a function that returns the value from the first row of the current window frame

Answer + AI explanation with Pro

1. A.Named window
2. B.Window frame clause
3. C.FIRST_VALUE
4. D.CUME_DIST

Answer + AI explanation with Pro

1. A.Named window — a function that distributes the partition's rows into a specified number of roughly equal buckets and labels each row with its bucket number
2. B.Named window — a reusable window specification declared once in a WINDOW clause and referenced by name across several functions
3. C.Named window — the implicit RANGE bound from the partition start through the current row and its peers used when no explicit frame is written with an ORDER BY
4. D.Named window — a function that returns the value from the first row of the current window frame

Answer + AI explanation with Pro