FUNCTIONS.md

PacketQ SQL functions

Grouping functions

Grouping function either groups the whole result or the result specified by group by.

COUNT(wildcard)

Counts occurrences within a group.

AVG(num)

Calculates the average of all num within a group.

SUM(num)

Calculates the sum of all num within a group.

MIN(num)

Calculates the minimum of all num within a group.

MAX(num)

Calculates the maximum of all num within a group.

STDEV(num)

Calculates the standard deviation of all num within a group.

Integer functions

TRUNCATE(num)

Converts double precision number to integer.

Logical functions

IF(condition, true_op, false_op)

Evaluates condition and executes false_op if the result is 0 (false) otherwise true_op is executed.

String operations

RSPLIT(string, n [, char])

Splits a string on character char (default .) and selects the N'th split from the right, i.e: RSPLIT('192.168.0.1',2) returns 168.

NAME(table, num)

Translate numbers into names table can be rcode or qtype, i.e: name('rcode',rcode) returns NXDomain.

TRIM(string, trim)

Trims of any occurrences of the string trim from both end of the string, i.e: trim('se.domains.se', 'se') returns .domains..

LOWER(string)

Turns string into lowercase.