# RANK

Returns an ascending sequence of integers, starting with 1. The
output sequence produces duplicate integers for duplicate values
of the `ORDER BY`

expressions. After generating
duplicate output values for the “tied” input values, the
function increments the sequence by the number of tied values.
Therefore, the sequence contains both duplicates and gaps when the
input contains duplicates. Starts the sequence over for each group
produced by the `PARTITIONED BY`

clause.

**Syntax:**

`RANK() OVER([``partition_by_clause`] `order_by_clause`)

The `PARTITION BY`

clause is optional. The
`ORDER BY`

clause is required. The window clause
is not allowed.

**Usage notes:**

Often used for top-N and bottom-N queries. For example, it could produce a “top 10” report including several items that were tied for 10th place.

Similar to `ROW_NUMBER`

and
`DENSE_RANK`

. These functions differ in how they
treat duplicate combinations of values.

**Examples:**

The following example demonstrates how the
`RANK()`

function identifies where each value
“places” in the result set, producing the same result for
duplicate values, and skipping values in the sequence to account
for the number of duplicates. For example, when results are
ordered by the `X`

column, both `1`

values are tied for first; both `2`

values are tied
for third; and so on.

```
select x, rank() over(order by x) as rank, property from int_t;
+----+------+----------+
| x | rank | property |
+----+------+----------+
| 1 | 1 | square |
| 1 | 1 | odd |
| 2 | 3 | even |
| 2 | 3 | prime |
| 3 | 5 | prime |
| 3 | 5 | odd |
| 4 | 7 | even |
| 4 | 7 | square |
| 5 | 9 | odd |
| 5 | 9 | prime |
| 6 | 11 | even |
| 6 | 11 | perfect |
| 7 | 13 | lucky |
| 7 | 13 | lucky |
| 7 | 13 | lucky |
| 7 | 13 | odd |
| 7 | 13 | prime |
| 8 | 18 | even |
| 9 | 19 | square |
| 9 | 19 | odd |
| 10 | 21 | round |
| 10 | 21 | even |
+----+------+----------+
```

The following examples show how the `RANK()`

function is affected by the `PARTITION`

property
within the `ORDER BY`

clause.

Partitioning by the `PROPERTY`

column groups all
the even, odd, and so on values together, and
`RANK()`

returns the place of each value within
the group, producing several ascending sequences.

```
select x, rank() over(partition by property order by x) as rank, property from int_t;
+----+------+----------+
| x | rank | property |
+----+------+----------+
| 2 | 1 | even |
| 4 | 2 | even |
| 6 | 3 | even |
| 8 | 4 | even |
| 10 | 5 | even |
| 7 | 1 | lucky |
| 7 | 1 | lucky |
| 7 | 1 | lucky |
| 1 | 1 | odd |
| 3 | 2 | odd |
| 5 | 3 | odd |
| 7 | 4 | odd |
| 9 | 5 | odd |
| 6 | 1 | perfect |
| 2 | 1 | prime |
| 3 | 2 | prime |
| 5 | 3 | prime |
| 7 | 4 | prime |
| 10 | 1 | round |
| 1 | 1 | square |
| 4 | 2 | square |
| 9 | 3 | square |
+----+------+----------+
```

Partitioning by the `X`

column groups all the
duplicate numbers together and returns the place each value within
the group; because each value occurs only 1 or 2 times,
`RANK()`

designates each `X`

value
as either first or second within its group.

```
select x, rank() over(partition by x order by property) as rank, property from int_t;
+----+------+----------+
| x | rank | property |
+----+------+----------+
| 1 | 1 | odd |
| 1 | 2 | square |
| 2 | 1 | even |
| 2 | 2 | prime |
| 3 | 1 | odd |
| 3 | 2 | prime |
| 4 | 1 | even |
| 4 | 2 | square |
| 5 | 1 | odd |
| 5 | 2 | prime |
| 6 | 1 | even |
| 6 | 2 | perfect |
| 7 | 1 | lucky |
| 7 | 1 | lucky |
| 7 | 1 | lucky |
| 7 | 4 | odd |
| 7 | 5 | prime |
| 8 | 1 | even |
| 9 | 1 | odd |
| 9 | 2 | square |
| 10 | 1 | even |
| 10 | 2 | round |
+----+------+----------+
```

The following example shows how a magazine might prepare a list of history's wealthiest people. Croesus and Midas are tied for second, then Crassus is fourth.

```
select rank() over (order by net_worth desc) as rank, name, net_worth from wealth order by rank, name;
+------+---------+---------------+
| rank | name | net_worth |
+------+---------+---------------+
| 1 | Solomon | 2000000000.00 |
| 2 | Croesus | 1000000000.00 |
| 2 | Midas | 1000000000.00 |
| 4 | Crassus | 500000000.00 |
| 5 | Scrooge | 80000000.00 |
+------+---------+---------------+
```