ABAP Select data from SAP table PPE_STRUCT_DOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PPE_STRUCT_DOC 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 PPE_STRUCT_DOC. 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 PPE_STRUCT_DOC 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_PPE_STRUCT_DOC TYPE STANDARD TABLE OF PPE_STRUCT_DOC,
      WA_PPE_STRUCT_DOC TYPE PPE_STRUCT_DOC,
      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: <PPE_STRUCT_DOC> TYPE PPE_STRUCT_DOC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPE_STRUCT_DOC
*  INTO TABLE @DATA(IT_PPE_STRUCT_DOC2).
*--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_PPE_STRUCT_DOC INDEX 1 INTO DATA(WA_PPE_STRUCT_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPE_STRUCT_DOC>-DOCID = 1.
<PPE_STRUCT_DOC>-DOC_KIND = 1.
<PPE_STRUCT_DOC>-DOC_NUMBER = 1.
<PPE_STRUCT_DOC>-DOC_VERSION = 1.
<PPE_STRUCT_DOC>-DOC_PART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPE_STRUCT_DOC-COUNT1, sy-vline,
  WA_PPE_STRUCT_DOC-LEVEL1, sy-vline,
  WA_PPE_STRUCT_DOC-PNGUID1, sy-vline,
  WA_PPE_STRUCT_DOC-PNAME1, sy-vline,
  WA_PPE_STRUCT_DOC-DOCTEXT, sy-vline,
  WA_PPE_STRUCT_DOC-DOCTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPE_STRUCT_DOC 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_PPE_STRUCT_DOC 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_PPE_STRUCT_DOC INTO WA_PPE_STRUCT_DOC.


*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.

*Conversion exit ALPHA, internal->external for field DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_DOC-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_DOC-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVNAME1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_DOC-PVNAME1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_DOC-PVNAME1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_DOC-AENNR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_DOC-AENNR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVNAME2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_DOC-PVNAME2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_DOC-PVNAME2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_DOC-AENNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_DOC-AENNR2.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_PPE_STRUCT_DOC_STR, 
DOCID TYPE STRING,
DOC_KIND TYPE STRING,
DOC_NUMBER TYPE STRING,
DOC_VERSION TYPE STRING,
DOC_PART TYPE STRING,
COUNT1 TYPE STRING,
LEVEL1 TYPE STRING,
PNGUID1 TYPE STRING,
PNAME1 TYPE STRING,
DOCTEXT TYPE STRING,
DOCTYPE TYPE STRING,
CLINT1 TYPE STRING,
CLASS1 TYPE STRING,
KLART1 TYPE STRING,
PVGUID1 TYPE STRING,
PVNAME1 TYPE STRING,
AENNR1 TYPE STRING,
COUNT2 TYPE STRING,
LEVEL2 TYPE STRING,
PNGUID2 TYPE STRING,
PNAME2 TYPE STRING,
CLINT2 TYPE STRING,
CLASS2 TYPE STRING,
KLART2 TYPE STRING,
PVGUID2 TYPE STRING,
PVNAME2 TYPE STRING,
AENNR2 TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPE_STRUCT_DOC_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_PPE_STRUCT_DOC_STR-DOCID sy-vline 
WA_PPE_STRUCT_DOC_STR-DOC_KIND sy-vline 
WA_PPE_STRUCT_DOC_STR-DOC_NUMBER sy-vline 
WA_PPE_STRUCT_DOC_STR-DOC_VERSION sy-vline 
WA_PPE_STRUCT_DOC_STR-DOC_PART sy-vline 
WA_PPE_STRUCT_DOC_STR-COUNT1 sy-vline 
WA_PPE_STRUCT_DOC_STR-LEVEL1 sy-vline 
WA_PPE_STRUCT_DOC_STR-PNGUID1 sy-vline 
WA_PPE_STRUCT_DOC_STR-PNAME1 sy-vline 
WA_PPE_STRUCT_DOC_STR-DOCTEXT sy-vline 
WA_PPE_STRUCT_DOC_STR-DOCTYPE sy-vline 
WA_PPE_STRUCT_DOC_STR-CLINT1 sy-vline 
WA_PPE_STRUCT_DOC_STR-CLASS1 sy-vline 
WA_PPE_STRUCT_DOC_STR-KLART1 sy-vline 
WA_PPE_STRUCT_DOC_STR-PVGUID1 sy-vline 
WA_PPE_STRUCT_DOC_STR-PVNAME1 sy-vline 
WA_PPE_STRUCT_DOC_STR-AENNR1 sy-vline 
WA_PPE_STRUCT_DOC_STR-COUNT2 sy-vline 
WA_PPE_STRUCT_DOC_STR-LEVEL2 sy-vline 
WA_PPE_STRUCT_DOC_STR-PNGUID2 sy-vline 
WA_PPE_STRUCT_DOC_STR-PNAME2 sy-vline 
WA_PPE_STRUCT_DOC_STR-CLINT2 sy-vline 
WA_PPE_STRUCT_DOC_STR-CLASS2 sy-vline 
WA_PPE_STRUCT_DOC_STR-KLART2 sy-vline 
WA_PPE_STRUCT_DOC_STR-PVGUID2 sy-vline 
WA_PPE_STRUCT_DOC_STR-PVNAME2 sy-vline 
WA_PPE_STRUCT_DOC_STR-AENNR2 sy-vline 
WA_PPE_STRUCT_DOC_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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