Description:
Return the specified column(s) in a cluster entity table/cluster in-memory table as a cluster cursor.
Syntax:
T.cursor(x,…;wi,...)
Note:
The function computes data in a cluster entity table/cluster in-memory table with expression x and the filtering condition w and returns the results as a cluster cursor.
Option:
|
@m |
The function with this option generates a cluster multicursor synchronously segmented into n parts. n is a positive integer representing the number of segments to be divided; the function returns an ordinary cursor if n<2; use the value of【Default number of subcursors in a multicursor】set in【Tool】-【Options】if n is absent |
Parameter:
|
T |
A cluster entity table/cluster in-memory table; cannot be a duplicate table |
|
x |
An expression |
|
wi |
Filtering condition; multiple conditions are separated by comma(s) and their relationships are AND |
Return value:
A cluster (multi)cursor
Example:
|
|
A |
|
|
1 |
=file(“D:/tb4.ctx”:[1],“169.254.121.62:8281”) |
Open a cluster table file. |
|
2 |
=A1.open() |
Return a cluster composite table. |
|
3 |
=A2.attach(table3) |
Retrieve cluster entity table table3. |
|
4 |
=A2.cursor() |
Return a cluster cursor. |
|
5 |
=A3.cursor(NAME,GENDER;EID<6) |
Return NAME field and GENER field where EID<6 as a cluster cursor. |
|
6 |
=file(“tb5.ctx”:[2],“192.168.31.72:8281”) |
|
|
7 |
=A6.open() |
|
|
8 |
=A7.cursor@m(;;3) |
Generate a cluster multicursor that is segmented into 3 parts. |
|
9 |
=A7.cursor() |
|
|
10 |
=A9.memory() |
Generate a cluster in-memory table. |
|
11 |
=A10.cursor() |
Return a cluster cursor. |