Here’s how to use close() function.
Description:
Close a cursor.
Syntax:
cs.close()
Note:
The function clears the file handles and database connections used by cursors and their root cursors. By default, all of them will be closed automatically when fetch operation finishes.
Parameter:
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cs |
A cursor. |
Example:
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A |
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1 |
=demo.cursor("select * from SCORES") |
Return a cursor of retrieved data. |
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2 |
=A1.fetch(10) |
Retrieve some records. |
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3 |
=A1.close() |
Close the cursor. |
Related function:
Description:
Close a datasource connection.
Syntax:
db.close()
Note:
Close a database connection. By default, data will be committed before closing the database.
Parameter:
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db |
Database connection, which supports esproc-JDBC source. |
Example:
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A |
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1 |
=connect("demo") |
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2 |
>A1.close() |
Close the connection to database demo. |
Note:
connect and close must be used in pairs; otherwise, the connection cannot be closed.
Related function:
Description:
Close QVM.
Syntax:
qvm.close()
Note:
The function closes QVM.
Parameter:
|
qvm |
The QVM object. |
Example:
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A |
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1 |
=Qconnect("http://54.213.221.123:8080/qvs":"aws-qvs",30,300) |
Request QVA through QVS to access QVM and return a QVM object. |
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2 |
=A1.exec("qtc01/imp_txt.splx";100) |
Execute SPL script file. |
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3 |
>A1.close() |
Close QVM. |
Description:
Close a composite table.
Syntax:
T.close()
Note:
The function closes an entity table and its attached tables in a composite table. The operation is not a necessity when there isn’t a write operation.
Parameter:
|
T |
A composite table. |
Example:
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A |
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1 |
=connect("demo").cursor("select EID,NAME,GENDER,SALARY from employee") |
Return a single cursor. |
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2 |
=file("emp.ctx") |
Generate a composite table |
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3 |
=A2.create(#EID,NAME,GENDER,SALARY) |
Create A2’s base table. |
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4 |
=A3.append(A1) |
Append data of A1’s cursor to the base table. |
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5 |
=A3.close() |
Close the composite table. |
Description
Close a cluster table.
Syntax:
Note:
The function closes a cluster table. It clears memory when T is a cluster in-memory table created by T.memory().
Parameter:
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T |
A cluster table. |
Example:
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A |
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1 |
=file("dept.ctx":[1],["192.168.0.104:8281"]) |
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2 |
=A1.open() |
Open a cluster table. |
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3 |
=A2.attach(t1) |
Return an existing attached table t1 in A2’ composite table. |
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4 |
=A2.memory(DEPTID,DEPTNAME;DEPTID<10) |
Generate a cluster in-memory table from table t1. |
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5 |
=A2.close() |
Close the cluster table and clear memory. |
Description:
Close a pseudo table.
Syntax:
T.close()
Note:
The function closes a pseudo table.
Parameter:
|
T |
A pseudo table. |
Example:
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A |
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1 |
=create(file).record(["STOCKRECORDS.ctx"]) |
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2 |
=pseudo(A1) |
Return a pseudo table object. |
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3 |
>A2.close() |
Close the pseudo table. |