open()

Here’s how to use open() functions.

f.open()

Description:

Open a composite table’s base table

Syntax:

f.open()

Note:

The function opens composite table f’s base table, or a multi-zone composite table when f is a homo-name files group.

Parameter:

f	A composite table file or a homo-name files group

Return value:

An entity table

Example:

	A
1	=file("1.emp.ctx")
2	=A1.open()	Open base table of composite table 1.emp.ctx
3	=file("emp.ctx":[1,2])
4	=A3.open()	Open a multi-zone composite table

f.open()

Description:

Generate a cluster table from a cluster file.

Syntax:

f.open(p)

Note:

Then function opens cluster file f and generates a cluster able based on f.

Parameter:

f	A cluster file; support only the composite table file

Return value:

A cluster table

Example:

	A
1	=file("employee.ctx",["192.168.0.104:8281"])	Open a cluster file
2	=A1.open("11")	Generate a cluster table based on it