PROCESS SQL (SQL)

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# PROCESS SQL (SQL)

`PROCESS SQL` ddm-name <<statement-string>>

This document covers the following topics:

- Function

- Syntax Description

- Entire Access Options

- Examples

For an explanation of the symbols used in the syntax diagram, see Syntax Symbols.

Related Statement: `REQUEST DOCUMENT`

Belongs to Function Group: Internet and XML

## Function

The `PROCESS SQL` statement is used to issue SQL statements to the underlying database.

## Syntax Description

Syntax Element | Description
--- | ---
`ddm-name` | DDM Name: The name of a data definition module (DDM) must be specified to provide the "address" of the database which executes the stored procedure. For more information, see `ddm-name`.
`statement-string` | Statement String: The statements which can be specified in the `statement-string` are the same statements which can be issued with the SQL statement `EXECUTE`; see also Flexible SQL. Warning To avoid transaction synchronization problems between the Natural environment and the underlying database, the `COMMIT` and `ROLLBACK` statements must not be used within `PROCESS SQL`. The statement string can cover several statement lines without any continuation character to be specified. Comments at the end of a line as well as entire comment lines are possible. The statement string can also include parameters; see Parameters in Statement String below.

### Parameters in Statement String

| `:U` |  | `:`host-variable [`INDICATOR`:host-variable] [`LINIDICATOR`:host-variable]
`:G`

Unlike with the Parameters described in the section Basic Syntactical Items, the `host-variables` used in this context must be prefixed by a colon (:). In addition, they can be preceded by a further qualifier (`:U` or `:G`).

See further details on `host-variable`.

Syntax Element Description:

Syntax Element | Description
--- | ---
`:U:host-variable` | "USING" Variable: The prefix `:U` qualifies the host variable as a so-called "USING" variable. Such a variable indicates that its value is to be passed to the database. `:U` is the default specification.
`:G:host-variable` | "GIVING" Variable: The prefix `:G` qualifies the host variable as a so-called "GIVING" variable. Such a variable indicates that it is to receive a value from the database.

## Entire Access Options

With Entire Access, you can also specify the following as statement-string:

- `SET SQLOPTION option = value`

- `SQLCONNECT option = value`

- `SQLDISCONNECT`

These options are only possible with Entire Access, and are described in the section Accessing Data in an SQL Database (in the Programming Guide).

## Examples

#### Example for Adabas D:

    PROCESS SQL ADABAS_D_DDM << LOCK TABLE EMPLOYEES IN SHARE MODE >>

#### Example of Calling a Procedure Stored in Adabas D:

The called procedure computes the sum of two numbers.

    ...
    COMPUTE #N1 = 1
    COMPUTE #N2 = 2
    COMPUTE #SUM = 0
    ...
    PROCESS SQL ADABAS_D_DDM << DBPROCEDURE DEMO.SUM (:#N1, :#N2, :G:#SUM) >>
    ...
    WRITE #N1 '+' #N2 ' =' #SUM
    ...

### On this page

- Function
- Syntax Description
- Entire Access Options
- Examples