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- =expression
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- [a:b]
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- A()
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- [a1,...an]
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- E()
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- end s
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- es_close()
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- o()
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- open()
- or()
- oss_bucket()
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- pca()
- pchipmthd()
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- pi()
- pivot()
- pjoin()
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- polyfit()
- pos()
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- proc()
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- ranki()
- rankm()
- ranks()
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- sap_client()
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- sap_cursor()
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- second()
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- seq()
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- spearman()
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- sqlparse()
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- sqrt()
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- svm()
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- syncfile(hs,p)
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- T()
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- tan()
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- time()
- tinv()
- to()
- top()
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- true
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- var(V)
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- words()
- workday()
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- year()
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- zeros()
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- Intersection of sequences
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ifind()
Description:
Search for a specified key value in an in-memory table according to the index.
Syntax:
T.ifind(k,...;I)
Note:
The function searches for key value k in in-memory table T according to index I and return a sequence of matching records, or null if no matching records are found.
Parameter:
|
T |
An in-memory table |
|
I |
Index name |
|
k |
Key value |
Option:
|
@p |
Return a sequence of sequence numbers of matching records |
|
@1 |
Return the first matching record |
Return value:
Sequence/null
Example:
|
|
A |
|
|
1 |
=demo.cursor("select EID,NAME,GENDER,SALARY from employee").memory() |
Return an in-memory table. |
|
2 |
=A1.index(test_ifind,SALARY>=11000;GENDER) |
Create test_ifind index on GENDER field. |
|
3 |
=A1.ifind("M";test_ifind) |
Use test_ifind index to search for and return records of the in-memory table whose key value is M according to test_ifind index. |
|
4 |
=A1.ifind@p("M";test_ifind) |
Return a sequence of sequence numbers of records. |
|
5 |
=A1.ifind@1("M";test_ifind) |
Return the first-found record. |
