ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

Компьютерный язык ABAP/4 - ключевые слова

INSERT - Insert in a database table

Variants

1. INSERT INTO dbtab VALUES wa. or
INSERT INTO (dbtabname) VALUES wa.
2. INSERT dbtab. or
INSERT *dbtab. or
INSERT (dbtabname) ...
3. INSERT dbtab FROM TABLE itab. or
INSERT (dbtabname) FROM TABLE itab.

Effect

Inserts new lines in a database table .

You can specify the name of the database table either in the program itself in the form dbtab or at runtime as the contents of the field dbtabname . In both cases, the database table must be defined in the ABAP/4 Dictionary . If the program contains the name of the database table, it must also include a corresponding TABLES statement. Normally, lines are inserted only in the current client. Data can only be inserted using a view if the view refers to a single table and was defined in the ABAP/4 Dictionary with the maintenance status "No restriction".

INSERT belongs to the Open SQL command set.

Notes

You cannot insert a line if a line with the same primary key already exists or if a UNIQUE index already has a line with identical key field values.
When inserting lines using a view , all fields of the database table that are not in the view are set to their initial value (see TABLES ) - if they were defined with NOT NULL in the ABAP/4 Dictionary . Otherwise they are set to NULL .
Since the INSERT statement does not perform authorization checks , you must program these yourself.
Lines specified in the INSERT command are not actually added to the database table until after the next ROLLBACK WORK . Lines added within a transaction remain locked until the transaction has finished. The end of a transaction is either a COMMIT WORK , where all database changes performed within the transaction are made irrevocable, or a ROLLBACK WORK , which cancels all database changes performed within the transaction.

Variant 1

INSERT INTO dbtab VALUES wa. or
INSERT INTO (dbtabname) VALUES wa.

Addition

... CLIENT SPECIFIED

Effect

Inserts one line into a database table.

The line to be inserted is taken from the work area wa and the data read from left to right according to the structure of the table work area dbtab (see TABLES ). Here, the structure of wa is not taken into account. For this reason, the work area wa must be at least as wide (see DATA ) as the table work area dbtab and the alignment of the work area wa must correspond to the alignment of the table work area. Otherwise, a runtime error occurs.

When the command has been executed, the system field SY-DBCNT contains the number of inserted lines (0 or 1).

The return code value is set as follows:

SY-SUBRC = 0 Line was successfully inserted.
SY_SUBRC = 4 Line could not be inserted since a line with the same key already exists.

Example

Insert the customer Robinson in the current client:


TABLES SCUSTOM.
SCUSTOM-ID        = '12400177'.
SCUSTOM-NAME      = 'Robinson'.
SCUSTOM-POSTCODE  = '69542'.
SCUSTOM-CITY      = 'Heidelberg'.
SCUSTOM-CUSTTYPE  = 'P'.
SCUSTOM-DISCOUNT  = '003'.
SCUSTOM-TELEPHONE = '06201/44889'.

INSERT INTO SCUSTOM VALUES SCUSTOM.

Addition

... CLIENT SPECIFIED

Effect

Switches off automatic client handling. This allows you to insert data across all clients even when dealing with client-specific tables. The client field is then treated like a normal table field which you can program to accept values in the work area wa that contains the line to be inserted.

The addition CLIENT SPECIFIED must be specified immediately after the name of the database table.

Example

Insert the customer Robinson in client 2:


TABLES SCUSTOM.
SCUSTOM-MANDT     = '002'.
SCUSTOM-ID        = '12400177'.
SCUSTOM-NAME      = 'Robinson'.
SCUSTOM-POSTCODE  = '69542'.
SCUSTOM-CITY      = 'Heidelberg'.
SCUSTOM-CUSTTYPE  = 'P'.
SCUSTOM-DISCOUNT  = '003'.
SCUSTOM-TELEPHONE = '06201/44889'.

INSERT INTO SCUSTOM CLIENT SPECIFIED VALUES SCUSTOM.

Variant 2

INSERT dbtab. or
INSERT *dbtab. or
INSERT (dbtabname) ...

Additions

1. ... FROM wa
2. ... CLIENT SPECIFIED

Effect

These are the SAP -specific short forms for the statements explained under variant 1.

INSERT INTO dbtab VALUES dbtab. or

INSERT INTO dbtab VALUES *dbtab. or

INSERT INTO (dbtabname) VALUES wa.

When the command has been executed, the system field SY-DBCNT contains the number of inserted lines (0 or 1).

The return code value is set as follows:

SY-SUBRC = 0 Line successfully inserted.
SY_SUBRC = 4 Line could not be inserted, since a line with the same key already exists.

Example

Add a line to a database table:


TABLES SAIRPORT.
SAIRPORT-ID   = 'NEW'.
SAIRPORT-NAME = 'NEWPORT APT'.

INSERT SAIRPORT.

Addition 1

... FROM wa

Effect

The values for the line to be inserted are not taken from the table work area dbtab , but from the explicitly specified work area wa . The work area wa must also satisfy the conditions described in variant 1. As with this variant, the addition allows you to specify the name of the database table directly or indirectly.

Note

If a work area is not explicitly specified, the values for the line to be inserted are taken from the table work area dbtab if the statement is in a FORM or FUNCTION where the table work area is stored in a formal parameter or local variable of the same name.

Addition 2

... CLIENT SPECIFIED

Effect

As for variant 1.

Variant 3

INSERT dbtab FROM TABLE itab. or
INSERT (dbtabname) FROM TABLE itab.

Additions

... CLIENT SPECIFIED
... ACCEPTING DUPLICATE KEYS

Effect

Mass insert: Inserzts all lines of the internal table itab in a single operation. The lines of itab must satisfy the same conditions as the work area wa in variant 1.

When the command has been executed, the system field SY-DBCNT contains the number of inserted lines.

The return code value is set as follows:

SY-SUBRC = 0 All lines successfully inserted. Any other result causes a runtime error .

Note

If the internal table itab is empty, SY-SUBRC and SY-DBCNT are set to 0 after the call.

Addition 1

... CLIENT SPECIFIED

Effect

As for variant 1.

Addition 2

... ACCEPTING DUPLICATE KEYS

Effect

If a line cannot be inserted, the processing does not terminate with a runtime error, but the return code value of SY-SUBRC is merely set to 4. All the remaining lines are inserted when the command is executed.

Index
© SAP AG 1996

ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

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