Description:
Convert a table sequence to an in-memory table.
Syntax:
T.memory()
Note:
The function converts table sequence T into an in-memory table. If T is a pure table sequence, keep it pure.
Parameter:
|
T |
A table sequence or a pure table sequence; if the table sequence has key an index, they will be inherited |
Option:
|
@o |
Directly use records of the original table sequence; when data of the original table sequence changes, the data in the returned in-memory table follows to change; by default the function copies and convert data in the original table sequence; in this case, data in the in-memory table does not follow to change even if data in the original table sequence changes |
Return value:
In-memory table
Example:
|
|
A |
|
|
1 |
=demo.query("select EID,NAME,GENDER,SALARY from employee where EID <= 30") |
|
|
2 |
=A1.keys(EID) |
Set EID as A1’s key. |
|
3 |
=A1.memory() |
Convert table sequence A1 to an in-memory table, during which the key is inherited. |
|
4 |
=A1.memory@o() |
|
|
5 |
=A1.insert(0) |
Append an empty record in the end of the original table sequence. Check A2 and find that no empty record is displayed at the end; check A3 and find that there is an empty record at the end |
|
6 |
=demo.query@v("select * from DEPT") |
Return a pure table sequence. |
|
7 |
=A6.memory() |
Convert A6’s pure table sequence to an in-memory table and keep it pure. |