- Data Type
- Operators
- Mathematical Functions
- String Functions
- 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()
- alter()
- and()
- append()
- argpost
- 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()
- cellname()
- ch.()
- channel()
- char()
- chn()
- 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()
- digits()
- 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()
- norm()
- not()
- now()
- null
- number()
- nvl()
- olap_close()
- olap_open()
- olap_query()
- open()
- or()
- output()
- p()
- pad()
- parse()
- paste()
- pca()
- pdate()
- pearson()
- penum()
- periods()
- permut()
- pfind()
- pi()
- pivot()
- pls()
- pmax()
- pmin()
- polyfit()
- pos()
- power()
- prior()
- proc()
- product()
- property()
- pseg()
- pselect()
- pseudo()
- psort()
- ptop()
- push()
- query()
- r.( x )
- r.F
- r.F=x
- rand()
- rands()
- range()
- rank()
- ranki()
- rankm()
- 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()
- sg()
- shift()
- sign()
- sin()
- sinh()
- size()
- sizeof()
- skip()
- sleep()
- sort()
- sortx()
- spark_client()
- spark_close()
- spark_cursor()
- spark_query()
- spearman()
- split()
- sqlparse()
- sqltranslate()
- SQL +
- substr()
- stax_close ()
- stax_connect ()
- stax_query ()
- sqrt()
- step()
- string()
- sum()
- swap()
- switch()
- sync()
- system()
- T()
- T.()
- 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
- Table sequence constant
- 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
redis_llen()
Description:
Get the length of a list.
Syntax:
redis_llen(con,key)
Note:
External library function. If the parameter key isn’t supplied, the function will interpret it as an empty list and return 0. If the data type of the parameter key isn’t list, an error will be reported.
Parameters:
|
con |
Database connection string |
|
key |
List name |
Return value:
The length of the list.
Example:
|
|
A |
|
|
1 |
=redis("192.168.18.131:6379","runqian") |
|
|
2 |
= redis_llen(A1,"abc") |
|
|
3 |
= redis_llen(A1,"mylist") |
|
Related functions: