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324fd98de6
* Updating of english translation. * Some bugs are fixed.
739 B
739 B
numbers
numbers(N)
— Returns a table with the single number
column (UInt64) that contains integers from 0
to N-1
.
numbers(N, M)
— Returns a table with the single number
column (UInt64) that contains integers from N
to (N + M - 1)
.
Similar to the system.numbers
table, it can be used for testing and generating successive values. The numbers(N, M)
function is more efficient than a selection from system.numbers
.
The following queries are equivalent:
SELECT * FROM numbers(10);
SELECT * FROM numbers(0,10);
SELECT * FROM system.numbers LIMIT 10;
Examples:
-- generate a sequence of all dates from 2010-01-01 to 2010-12-31
select toDate('2010-01-01') + number as d FROM numbers(365);