ch.conj()

Read(914) Label: split, channel, union,

Description:

Attach a computation to a channel, which will split each of its records and perform union on the splitting result.

Syntax:

ch.conj(x)

Note:

The function attaches a computation to channel ch, which will split each of its records according to result of computing expression x into a sequence or a record sequence, union the result members or records, and return the original channel ch.

 

This is an attachment computation.

Parameter:

ch

A channel

x

An expression that returns a record sequence/table sequence

Return value:

Channel

Example:

 

A

 

1

=demo.cursor("select * from GYMNASTICSWOMEN")

Return a cursor.

The above is content of GYMNASTICSWOMEN table.

2

=channel()

Create a channel.

3

=A2.conj(create(ID,NAME,COUNTRY,SUBJECT,SCORES).record([ID,NAME,COUNTRY,"VAULT"

,VAULT,ID,NAME,COUNTRY,"UNEVENBARS",UNEVENBARS,ID,NAME,COUNTRY,

"BALANCEBEAM",BALANCEBEAM,ID,NAME,COUNTRY,"FLOOR",FLOOR]))

Attach a computation to channel A2, which will perform column-to-row transposition on VAULT, UNEVENBARS, BALANCEBEAM and FLOOR fields, and return the original channel.

3

=A2.fetch()

Execute the result set function in channel A2 and keep the current data in channel.

4

=A1.push(A2)

Be ready to push data in A1’s cursor into the channel, but the action needs to wait.

5

=A1.fetch()

Fetch data from cursor A1 while pushing data into the channel to execute the attached computation and keep the result.

6

=A2.result()

Get channel A2’s result: