Documentation

Data Type
Operators
Mathematical Functions
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Date/Time Functions
Sequence Functions
Table Sequence Functions
Loop Functions
Functions for Associative Operations
File-handling Functions
Database Functions
Cursor Functions
Statements
System- & interface-related Functions
Cluster Computing Functions
Chart-plotting Functions
Financial Functions
External Library Functions
Composite-Table-Related Functions
Functions

#c

$(db)sql;…

${macroExp}

=expression

>statement

[a:b]

@

A()

A.( x )

[a 1 ,…a n ]

abs()

acos()

acosh()

age()

align()

ali_client()

ali_close()

ali_query()

and()

append()

array()

asc()

asin()

asinh()

atan()

atanh()

attach()

avg()

base64 ()

between()

bits()

bool()

break {a}

C

Cr()

calc()

call()

call path/dfx( … )

callx()

cand()

canvas()

case()

ceil()

ch.()

channel()

char()

clear

clipboard()

close()

cmp()

cor()

combin()

commit()

concat()

conj()

conjx()

connect()

contain()

cos()

cosh()

count()

cov()

covm()

create()

cs.()

cum()

cursor()

date()

datetime()

day()

days()

decimal()

delete()

deq()

derive()

dfx ( … )

diff()

directory()

dis()

dism()

dup()

elapse()

end s

enum()

env()

eq()

error()

eval()

es_close ()

es_delete()

es_head()

es_open()

es_get()

es_post()

es_put()

execute()

exists()

exp()

export()

f@o(…)

Faccrint()

Faccrintm()

fact()

false

Fcoupcd()

Fcoups()

Fdb()

Fddb()

Fdisc()

Fduration()

fetch()

field()

file()

filename()

find()

Fintrate()

Firr()

float()

floor()

Fmirr()

fname()

fno()

Fnper()

Fnpv()

for

fork

format()

Fpmt()

Fprice()

Frate()

Freceived()

Fsln()

Fsyd()

ftp_cd()

ftp_client()

ftp_close()

ftp_dir()

ftp_get()

ftp_mget()

ftp_mput()

ftp_put()

func()

Fv()

Fvdb()

Fyield()

gcd()

goto C

group()

groupi()

groupn()

groups()

groupx()

hash()

hbase_close()

hbase_cmp()

hbase_filter()

hbase_filterlist()

hbase_get()

hbase_open()

hbase_scan()

hdfs_client()

hdfs_close()

hdfs_dir()

hdfs_file()

hive_client()

hive_close()

hive_cursor()

hive_execute ()

hive_query()

hosts()

hour()

httpfile()

I()

icursor()

icount()

id()

if

if()

ifa()

ifdate()

ifn()

ifnumber()

ifr()

ifstring()

ift()

iftime()

ifv()

ifx_close()

ifx_conn()

ifx_cursor()

ifx_listfrag()

ifx_savefrag()

ifx_setfrag()

ifx_takefrag()

import()

index()

inf()

insert()

int()

interval()

inv()

inverse()

invoke()

isalpha()

isdigit()

isect()

iselect()

islower()

isolate()

isupper()

iterate()

join()

joinx()

json()

k()

k{}

kafka_close()

kafka_commit()

kafka_poll()

kafka_subscribe()

key()

keys()

lcm()

left()

len()

lg()

like()

linefit()

ln()

lock()

long()

lower()

m()

mae()

max()

maxp()

mcursor()

md5()

median()

memory()

merge()

Mergex()

mid()

millisecond()

min()

minp()

minute()

mode()

modify()

mongo_close ()

mongo_insert()

mongo_open()

mongo_shell()

month()

movefile()

mul()

mse()

n.f( x )

name()

new()

news()

next{a}

nodes()

not()

now()

null

number()

nvl()

olap_close()

olap_open()

olap_query()

open()

or()

output()

p()

pad()

parse()

paste()

pdate()

penum()

periods()

permut()

pfind()

pi()

pivot()

pmax()

pmin()

polyfit()

pos()

power()

prior()

proc()

product()

property()

pseg()

pselect()

psort()

ptop()

push()

query()

r.( x )

r.F

r.F=x

rand()

rands()

range()

rank()

ranki()

ranks()

read()

record()

redis()

redis_close()

redis_cluster()

redis_get()

redis_getrange()

redis_hkeys()

redis_hlen()

redis_hmget()

redis_hvals()

redis_keys()

redis_lindex()

redis_llen()

redis_lrange()

redis_pool()

redis_scard()

redis_sdiff()

redis_select()

redis_sentinel()

redis_shared()

redis_sharedpool()

redis_sinter()

redis_sismember()

redis_smembers()

redis_srandmember()

redis_strlen()

redis_sunion()

redis_type()

redis_zcard()

redis_zcount()

redis_zrange()

redis_zrangebyscore()

redis_zrank()

redis_zscore()

regex()

register()

rename()

replace()

report_config()

report_exportHtml()

report_exportPdf()

report_exportXls()

report_open()

report_run()

reset()

result

return xi

rgb()

right()

rollback()

round()

run()

rvs()

sap_client ()

sap_close()

sap_cursor ()

sap_execute ()

sap_getparam ()

sap_table ()

savepoint()

second()

segp()

select()

seq()

shift()

sign()

sin()

sinh()

size()

sizeof()

skip()

sleep()

sort()

sortx()

spark_client()

spark_close()

spark_cursor()

spark_query()

split()

sqlparse()

sqltranslate()

SQL +

substr()

stax_close ()

stax_connect ()

stax_query ()

sqrt()

step()

string()

sum()

swap()

switch()

sync()

system()

tan()

tanh()

time()

to()

top()

total()

transpose()

trim()

true

try

union()

update()

upper()

urlencode ()

v()

var()

words()

workday()

workdays()

write()

ws_call()

ws_client()

xjoin()

xjoinx()

xlscell()

xlsclose()

xlsexport()

xlsimport()

xlsopen()

xlswrite()

xml()

xor()

year()

ym_build_model()

ym_close()

ym_env()

ym_exec()

ym_importance()

ym_json()

ym_load_pcf()

ym_model()

ym_performance()

ym_predict()

ym_present()

ym_result()

ym_save_pcf()

ym_setparam()

ym_server_quit()

ym_statistics()

ym_target()

z()

zip()

zip_add()

zip_close ()

zip_compress()

zip_del()

zip_encrypt()

zip_extract()

zone()

Intersection of sequences

Comparison operation

Hexadecimal long integer

Modulus

Concatenation of sequences

Arithmetic operations

Compound assignment

String

String concatenation

Concatenation of serial bytes

Alignment arithmetic operations

Difference between sequences

Union of sequences

Multiplication of sequences

Loop functions

The writing rules for expression x in loop functions

Batch Computation

Identifier

Opposite Number

Empty Sequence

Assignment

Value Computation and Assignment

Escape Character

Logical Operations

Long Integer

Cell type

Code block type
Chart Elements

G .draw()

G.hlink

G .plot()

Chart Element Parameters

join()

Read（564） Like（0） Label: join multiple sequences,

Description:

Join multiple sequences together.

Syntax:

join(A_i:F_i,x_j,..;…)

Note:

The function joins multiple sequences of A_i according to the condition that the value of relational field/expression x_jisequal to x₁, and generates a table sequence whose fields are F_i,…. which reference the records of the original record sequences A_i. If x_j is omitted, then use the key of A_i. An omitted x_j won’t be matched. No matter how many record sequences are mutually related, the equivalence determination is conducted according to the x1 in A1. Therefore this is a one-to-many relationship.

Parameters:

Fi	Field name of the resulting table sequence
Ai	Sequences or record sequences to be joined
xj	Relational field/ expression

Options:

@f	Full join;if no matching records are found, then use nulls to correspond
@1	Left join; it is the number "1" instead of the letter "l"
@m	If all A_iare ordered against x_j_, then use merge operation to compute
@p	Perform a join according to positions while ignoring parameter xj
@x	If field values of the sequences to be joined are records, the joining values will be unfolded

Return value:

A new table sequence whose fields are all referencing ones

Example:

A

1

=demo.query("select top 3 EID,NAME from EMPLOYEE").keys(EID)

2

=demo.query("select top 3 EID,NAME from FAMILY").keys(EID)

3

=join(A1:Employee,EID;A2:Familymembers,EID)

Normal join. The non-matching items will be discarded. Every field is a ref field pointing to the corresponding record in the original table sequence

4

=join@f(A1:Employee,EID;A2:Familymembers,EID)

Full join. If no matches, then use the nulls

5

=join@1(A1:Employee,EID;A2:Familymembers,EID)

Left join. Take the first table sequence as the basis, and use nulls if no matching items are found

6

=join@m(A1:Employee,EID;A2:Familymembers,EID)

If all the relational fields are in the same order, then merge operation can be used to compute; If they are not in the same order, then error will occur.

7

=join@p(A1:Employee;A2:Familymembers)

8

=join(A1:Employee;A2:Familymembers)

9

=join(A1:Employee1;A2:Familymembers1)

10

=join(A7:Employee2;A8:Familymembers2)

11

=join@x(A7:Employee2;A8:Familymembers2)

Field values of A7 and A8 are records, the joining values will be unfolded

Related functions: