@ -1339,34 +1339,34 @@ generate_series(*start*, *stop*, *\[step\]*)
.. code-block :: custsqlite
;SELECT value FROM generate_series(10, 14)
value
10
11
12
13
14
value
10
11
12
13
14
To generate every other number in the range [10, 14]:
.. code-block :: custsqlite
;SELECT value FROM generate_series(10, 14, 2)
value
10
12
14
value
10
12
14
To count down from five to 1:
.. code-block :: custsqlite
;SELECT value FROM generate_series(1, 5, -1)
value
5
4
3
2
1
value
5
4
3
2
1
----
@ -3656,11 +3656,11 @@ row_number()
.. code-block :: custsqlite
;SELECT row_number() OVER (PARTITION BY ex_procname ORDER BY log_line) AS msg_num, ex_procname, log_body FROM lnav_example_log
msg_num ex_procname log_body
1 gw Goodbye, World!
2 gw Goodbye, World!
3 gw Goodbye, World!
1 hw Hello, World!
msg_num ex_procname log_body
1 gw Goodbye, World!
2 gw Goodbye, World!
3 gw Goodbye, World!
1 hw Hello, World!
**See Also**
:ref: `cume_dist` , :ref: `dense_rank` , :ref: `first_value` , :ref: `lag` , :ref: `last_value` , :ref: `lead` , :ref: `nth_value` , :ref: `ntile` , :ref: `percent_rank` , :ref: `rank`
@ -4189,19 +4189,19 @@ timeslice(*time*, *slice*)
;SELECT timeslice(log_time_msecs, '5m') AS slice, count(1)
FROM lnav_example_log GROUP BY slice
slice count(1)
2017-02⋯:00.000 2
2017-02⋯:00.000 1
2017-02⋯:00.000 1
slice count(1)
2017-02⋯:00.000 2
2017-02⋯:00.000 1
2017-02⋯:00.000 1
To group log messages by those before 4:30am and after:
.. code-block :: custsqlite
;SELECT timeslice(log_time_msecs, 'before 4:30am') AS slice, count(1) FROM lnav_example_log GROUP BY slice
slice count(1)
<NULL> 1
2017-02⋯:00.000 3
slice count(1)
<NULL> 1
2017-02⋯:00.000 3
**See Also**
:ref: `date` , :ref: `datetime` , :ref: `humanize_duration` , :ref: `julianday` , :ref: `strftime` , :ref: `time` , :ref: `timediff` , :ref: `timezone`
@ -4611,9 +4611,9 @@ derive *column*
.. code-block :: custsqlite
;from [{a=1}, {a=2}] | derive b = a * 2
a b
1 2
2 4
a b
1 2
2 4
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4661,19 +4661,19 @@ from *table*
.. code-block :: custsqlite
;from http_status_codes | take 3
status message
100 Continue
101 Switchi⋯otocols
102 Processing
status message
100 Continue
101 Switchi⋯otocols
102 Processing
To use an array literal as a source:
.. code-block :: custsqlite
;from [{ col1=1, col2='abc' }, { col1=2, col2='def' }]
col1 col2
1 abc
2 def
col1 col2
1 abc
2 def
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4698,11 +4698,11 @@ group *key_columns* *pipeline*
.. code-block :: custsqlite
;from lnav_example_log | group { log_level } (aggregate { count this })
log_level COUNT(*)
debug 1
info 1
warn 1
error 1
log_level COUNT(*)
debug 1
info 1
warn 1
error 1
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4753,9 +4753,9 @@ select *expr*
.. code-block :: custsqlite
;from [{a=1}, {a=2}] | select b = a * 2
b
2
4
b
2
4
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4779,9 +4779,9 @@ sort *expr*
.. code-block :: custsqlite
;from [{a=1}, {a=2}] | sort {-a}
a
2
1
a
2
1
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4830,9 +4830,9 @@ stats.by *col* *values*
.. code-block :: custsqlite
;from [{a=1, b=1}, {a=1, b=1}, {a=2, b=1}] | stats.by a {sum b}
a COALESC⋯(b), 0)
1 2
2 1
a COALESC⋯(b), 0)
1 2
2 1
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4856,9 +4856,9 @@ stats.count_by *column*
.. code-block :: custsqlite
;from [{a=1}, {a=1}, {a=2}] | stats.count_by a
a total
1 2
2 1
a total
1 2
2 1
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4941,9 +4941,9 @@ take *n_or_range*
.. code-block :: custsqlite
;from [{a=1}, {a=2}, {a=3}] | take 2..3
a
2
3
a
2
3
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of` , :ref: `utils_distinct`
@ -4967,9 +4967,9 @@ utils.distinct *col*
.. code-block :: custsqlite
;from [{a=1}, {a=1}, {a=2}] | utils.distinct a
a
1
2
a
1
2
**See Also**
:ref: `prql_aggregate` , :ref: `prql_append` , :ref: `prql_derive` , :ref: `prql_filter` , :ref: `prql_from` , :ref: `prql_group` , :ref: `prql_join` , :ref: `prql_select` , :ref: `prql_sort` , :ref: `prql_take` , :ref: `stats_average_of` , :ref: `stats_by` , :ref: `stats_count_by` , :ref: `stats_hist` , :ref: `stats_sum_of`
Tim Stack
1 month ago