ABAP Select data from SAP table P1283 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P1283 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to P1283. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the P1283 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_P1283 TYPE STANDARD TABLE OF P1283,
      WA_P1283 TYPE P1283,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <P1283> TYPE P1283.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P1283.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P1283
  INTO TABLE IT_P1283.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P1283
*  INTO TABLE @DATA(IT_P12832).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_P1283 INDEX 1 INTO DATA(WA_P12832).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P1283 ASSIGNING <P1283>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P1283>-CLIENT = 1.
<P1283>-WI_ID = 1.
<P1283>-CODE = 1.
<P1283>-ERRORTYPE = 1.
<P1283>-NAME = 1.

ENDLOOP.

LOOP AT IT_P1283 INTO WA_P1283.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P1283-WORKAREA, sy-vline,
  WA_P1283-MESSAGE, sy-vline,
  WA_P1283-VARIABLE1, sy-vline,
  WA_P1283-VARIABLE2, sy-vline,
  WA_P1283-VARIABLE3, sy-vline,
  WA_P1283-VARIABLE4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P1283 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_P1283 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_P1283 INTO WA_P1283.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P1283_STR, 
CLIENT TYPE STRING,
WI_ID TYPE STRING,
CODE TYPE STRING,
ERRORTYPE TYPE STRING,
NAME TYPE STRING,
WORKAREA TYPE STRING,
MESSAGE TYPE STRING,
VARIABLE1 TYPE STRING,
VARIABLE2 TYPE STRING,
VARIABLE3 TYPE STRING,
VARIABLE4 TYPE STRING,
WI_ASD TYPE STRING,
WI_AST TYPE STRING,
WI_AED TYPE STRING,
WI_AET TYPE STRING,
CATID TYPE STRING,
EXCP_TYPE TYPE STRING,
EXC_CLSNAM TYPE STRING,
WI_ASTS TYPE STRING,
WI_AETS TYPE STRING,
GUID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P1283_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_P1283_STR-CLIENT sy-vline 
WA_P1283_STR-WI_ID sy-vline 
WA_P1283_STR-CODE sy-vline 
WA_P1283_STR-ERRORTYPE sy-vline 
WA_P1283_STR-NAME sy-vline 
WA_P1283_STR-WORKAREA sy-vline 
WA_P1283_STR-MESSAGE sy-vline 
WA_P1283_STR-VARIABLE1 sy-vline 
WA_P1283_STR-VARIABLE2 sy-vline 
WA_P1283_STR-VARIABLE3 sy-vline 
WA_P1283_STR-VARIABLE4 sy-vline 
WA_P1283_STR-WI_ASD sy-vline 
WA_P1283_STR-WI_AST sy-vline 
WA_P1283_STR-WI_AED sy-vline 
WA_P1283_STR-WI_AET sy-vline 
WA_P1283_STR-CATID sy-vline 
WA_P1283_STR-EXCP_TYPE sy-vline 
WA_P1283_STR-EXC_CLSNAM sy-vline 
WA_P1283_STR-WI_ASTS sy-vline 
WA_P1283_STR-WI_AETS sy-vline 
WA_P1283_STR-GUID sy-vline 
WA_P1283_STR-BEGDA sy-vline 
WA_P1283_STR-ENDDA sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.