NextResult - Maple Help
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Statement

  

NextResult

  

retrieve the next result of a multiple statement execute

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

statement:-NextResult( )

Parameters

statement

-

Statement module

Description

• 

NextResult tries to retrieve the next result from statement. If no results are available, it returns NULL.

• 

If a result is available, it will either be an integer corresponding to an update statement, or a Result module corresponding to a query statement.

• 

To issue a multi-statement SQL string, the Execute command must be used.

• 

Some databases may require that the processing of the current result be completed before the next result is returned by NextResult.

Examples

> 

driver≔DatabaseLoadDriver⁡:

> 

conn≔driver:-OpenConnection⁡url,name,pass:stat≔conn:-CreateStatement⁡:

Execute some statements.

> 

res≔stat:-Execute⁡SELECT name FROM animals WHERE id = 1; INSERT INTO\nanimals( id, name, number, mass ) VALUES( 14, 'boar', 10, 60.67 ); SELECT name FROM animals WHERE id = 3;:

Check the value.

> 

res:-Next⁡;res:-GetData⁡name

fish

(1)

Get the next result.

> 

stat:-NextResult⁡

1

(2)

Now the last result.

> 

res≔stat:-NextResult⁡:res:-Next⁡:res:-GetData⁡name

cat

(3)

Check for more results.

> 

stat:-NextResult⁡

NULL returned, no more results in this Statement Module.

See Also

Database

Database[Result]

Database[Statement]

Database[Statement][Execute]

Database[usage]