Reference card

Keywords

A	`abs` `acos` `aj` `aj0` `ajf` `ajf0` `all` `and` `any` `asc` `asin` `asof` `atan` `attr` `avg` `avgs`
B	`bin` `binr`
C	`ceiling` `cols` `cor` `cos` `count` `cov` `cross` `csv` `cut`
D	`delete` `deltas` `desc` `dev` `differ` `distinct` `div` `do` `dsave`
E	`each` `ej` `ema` `enlist` `eval` `except` `exec` `exit` `exp`
F	`fby` `fills` `first` `fkeys` `flip` `floor`
G	`get` `getenv` `group` `gtime`
H	`hclose` `hcount` `hdel` `hopen` `hsym`
I	`iasc` `idesc` `if` `ij` `ijf` `in` `insert` `inter` `inv`
K	`key` `keys`
L	`last` `like` `lj` `ljf` `load` `log` `lower` `lsq` `ltime` `ltrim`
M	`mavg` `max` `maxs` `mcount` `md5` `mdev` `med` `meta` `min` `mins` `mmax` `mmin` `mmu` `mod` `msum`
N	`neg` `next` `not` `null`
O	`or` `over`
P	`parse` `peach` `pj` `prd` `prds` `prev` `prior`
R	`rand` `rank` `ratios` `raze` `read0` `read1` `reciprocal` `reval` `reverse` `rload` `rotate` `rsave` `rtrim`
S	`save` `scan` `scov` `sdev` `select` `set` `setenv` `show` `signum` `sin` `sqrt` `ss` `ssr` `string` `sublist` `sum` `sums` `sv` `svar` `system`
T	`tables` `tan` `til` `trim` `type`
U	`uj` `ujf` `ungroup` `union` `update` `upper` `upsert`
V	`value` `var` `view` `views` `vs`
W	`wavg` `where` `while` `within` `wj` `wj1` `wsum`
X	`xasc` `xbar` `xcol` `xcols` `xdesc` `xexp` `xgroup` `xkey` `xlog` `xprev` `xrank`

.Q.id (sanitize), .Q.res (reserved words)

Operators

`@` `.`	Apply Index Trap Amend	`$`	Cast Tok Enumerate Pad `mmu`	`!`	Dict Enkey Unkey Enumeration Flip Splayed Display internal Update Delete	`?`	Find Roll, Deal Enum Extend Select Exec Simple Exec Vector Conditional
`+`	Add	`-`	Subtract	`*`	Multiply	`%`	Divide
`=` `<>`	Equals Not Equals	`<` `<=`	Less Than Up To	`>` `>=`	Greater Than At Least	`~`	Match
`\|`	Greater, OR	`&`	Lesser, AND
`#`	Take Set Attribute	`_`	Cut Drop	`^`	Fill Coalesce	`,` `'`	Join Compose

Overloaded glyphs

Iterators

maps accumulators ' Each, each, Case /: Each Right / Over, over ': Each Parallel, peach \: Each Left \ Scan, scan ': Each Prior, prior

Other

`   pop stack        :    assign         0      console     0:  File Text
.   push stack       ::   identity       1, -1  stdout      1:  File Binary
\x  system cmd            generic null   2, -2  stderr      2:  Dynamic Load
\   abort                 global amend   n, -n  handle
\\  quit q                set view
()     precedence    [;]  expn block     {}  lambda         `   symbol
(;)    list               argt list      ;   separator      `:  filepath
([]..) table

Attributes

g grouped p parted s sorted u unique

Set Attribute

Command-line options and system commands

file
`\a`	tables	`\r`	rename
`-b`	blocked	`-s` `\s`	secondary processes
`\b` `\B`	views	`\S`	random seed
`-c` `\c`	console size	`-t` `\t`	timer ticks
`-C` `\C`	HTTP size	`\ts`	time and space
`\cd`	change directory	`-T` `\T`	timeout
`\d`	directory	`-u` `-U` `\u`	usr-pwd
`-e` `\e`	error traps	`-u`	disable syscmds
`-E` `\E`	TLS server mode	`\v`	variables
`\f`	functions	`-w` `\w`	memory
`-g` `\g`	garbage collection	`-W` `\W`	week offset
`\l`	load file or directory	`\x`	expunge
`-l` `-L`	log sync	`-z` `\z`	date format
`-o` `\o`	UTC offset	`\1` `\2`	redirect
`-p` `\p`	listening port	`\_`	hide q code
`-P` `\P`	display precision	`\`	terminate
`-q`	quiet mode	`\`	toggle q/k
`-r` `\r`	replicate	`\\`	quit

system
Command-line options, System commands, OS commands

Datatypes

n	c	name	sz	literal	null	inf	SQL	Java	.Net
0	*	list
1	b	boolean	1	`0b`				Boolean	boolean
2	g	guid	16		`0Ng`			UUID	GUID
4	x	byte	1	`0x00`				Byte	byte
5	h	short	2	`0h`	`0Nh`	`0Wh`	smallint	Short	int16
6	i	int	4	`0i`	`0Ni`	`0Wi`	int	Integer	int32
7	j	long	8	`0j` or `0`	`0Nj` or `0N`	`0Wj` or `0W`	bigint	Long	int64
8	e	real	4	`0e`	`0Ne`	`0We`	real	Float	single
9	f	float	8	`0.0` or `0f`	`0n`	`0w`	float	Double	double
10	c	char	1	`" "`	`" "`			Character	char
11	s	symbol	.	`	`		varchar	String	string
12	p	timestamp	8	dateDtimespan	`0Np`	`0Wp`		Timestamp	DateTime (RW)
13	m	month	4	`2000.01m`	`0Nm`
14	d	date	4	`2000.01.01`	`0Nd`	`0Wd`	date	Date
15	z	datetime	8	dateTtime	`0Nz`	`0wz`	timestamp	Timestamp	DateTime (RO)
16	n	timespan	8	`00:00:00.000000000`	`0Nn`	`0Wn`		Timespan	TimeSpan
17	u	minute	4	`00:00`	`0Nu`	`0Wu`
18	v	second	4	`00:00:00`	`0Nv`	`0Nv`
19	t	time	4	`00:00:00.000`	`0Nt`	`0Wt`	time	Time	TimeSpan
20-76		enums
77		anymap
78-96		77+t – mapped list of lists of type t
97		nested sym enum
98		table
99		dictionary
100		lambda
101		unary primitive
102		operator
103		iterator
104		projection
105		composition
106		`v'`
107		`v/`
108		`v\`
109		`v':`
110		`v/:`
111		`v\:`
112		dynamic load

n: short int returned by type and used for casting, e.g. 9h$3
c: character used lower-case for casting and upper-case for Load CSV
sz: size in bytes
inf: infinity (no math on temporal types); 0Wh is 32767h
v: applicable value
RO: read only; RW: read-write

Nested types are 77+t (e.g. 78 is boolean. 96 is time.)

Cast $: where char is from the c column above char$data:CHAR$string

dict:`a`b!…
table:([]x:…;y:…)
date.(year month week mm dd)
time.(minute second mm ss)
milliseconds: time mod 1000

Namespaces

`.h`

Markup output for HTTP

.h.br linebreak .h.cd CSV from data .h.code code after Tab .h.d delimiter .h.fram frame .h.ed Excel from data .h.ha anchor .h.edsn Excel from tables .h.hb anchor target .h.hc escape lt .h.ht Marqdown to HTML .h.hr horizontal rule .h.hta start tag .h.iso8601 ISO timestamp .h.htac element .h.jx table .h.htc element .h.td TSV from data .h.html document .h.tx filetypes .h.http hyperlinks .h.xd XML .h.nbr no break .h.xs XML escape .h.pre pre .h.xt JSON .h.text paragraphs .h.xmp XMP

.h.he HTTP 400 .h.c0 web color .h.hn HTTP response .h.c1 web color .h.hp HTTP response pre .h.HOME webserver root .h.hy HTTP response content .h.logo Kx logo .h.sa anchor style .h.hu URI escape .h.sb body style .h.hug URI map .h.ty MIME types .h.sc URI-safe .h.val value .h.uh URI unescape

`.j`

De/serialize as JSON

.j.j serialize .j.k deserialize .j.jd serialize infinity

`.m`

Memory backed by files

`.Q`

Utilities: general, environment, IPC, datatype, database, partitioned database state, segmented database state, file I/O

General addmonths bt dd def f ff fmt ft fu gc gz id qt res s s1 sbt trp ts u V v view Constants A a b6 nA Environment k opt w x IPC addr fps fs hg host hp l Datatype btoa b64 encode backtrace j10 encode binhex join symbols j12 encode base 36 M long infinity format ty type append columns x10 decode binhex format x12 decode base 36 apply simple apply unique Database garbage collect chk fill HDB GZip dpft save table sanitize dpfts save table with sym is table dsftg load process save keywords en enumerate varchar cols plain text ens enumerate against domain string representation fk foreign key string backtrace hdpf save tables extend trap qt is table time and space qp is partitioned date based table to dict value Partitioned database state subview bv build vp ind partitioned index cn count partitioned table uppercase alphabet MAP maps partitions lowercase alphabet D partitions bicameral alphanums par locate partition alphanums PD partition locations pd modified partition locns pf partition field version pn partition counts command parameters qp is partitioned memory stats pt partitioned tables non-command parameters PV partition values pv modified partition values vp missing partitions IP address fpn streaming algorithm Segmented database state fsn streaming algorithm D partitions HTTP get P segments hostname u date based HTTP post load

File I/O Cf create empty nested char file Xf create file

`.z`

System variables, callbacks

System information Callbacks .z.a IP address .z.ac HTTP auth from cookie .z.b dependencies .z.bm msg validator .z.c cores .z.exit action on exit .z.D/d date shortcuts .z.pc close .z.e TLS connection status .z.pd peach handles .z.ex failed primitive .z.pg get .z.ey arg to failed primitive .z.ph HTTP get .z.f file .z.pi input .z.h host .z.po open .z.i PID .z.pp HTTP post .z.K version .z.pq qcon .z.k release date .z.ps set .z.l license .z.pw validate user .z.N/n local/UTC timespan .z.ts timer .z.o OS version .z.vs value set .z.P/p local/UTC timestamp .z.wc WebSocket close .z.pm HTTP options .z.wo WebSocket open .z.q quiet mode .z.ws WebSockets .z.s self .z.T/t time shortcuts .z.u user ID .z.W/w handles/handle .z.X/x raw/parsed command line .z.Z/z local/UTC datetime .z.zd zip defaults