ABAP Select data from SAP table /SAPAPO/RRP_SNP2PP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/RRP_SNP2PP 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 /SAPAPO/RRP_SNP2PP. 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 /SAPAPO/RRP_SNP2PP 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_/SAPAPO/RRP_SNP2PP TYPE STANDARD TABLE OF /SAPAPO/RRP_SNP2PP,
      WA_/SAPAPO/RRP_SNP2PP TYPE /SAPAPO/RRP_SNP2PP,
      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: </SAPAPO/RRP_SNP2PP> TYPE /SAPAPO/RRP_SNP2PP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/RRP_SNP2PP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/RRP_SNP2PP
  INTO TABLE IT_/SAPAPO/RRP_SNP2PP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/RRP_SNP2PP
*  INTO TABLE @DATA(IT_/SAPAPO/RRP_SNP2PP2).
*--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_/SAPAPO/RRP_SNP2PP INDEX 1 INTO DATA(WA_/SAPAPO/RRP_SNP2PP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/RRP_SNP2PP ASSIGNING </SAPAPO/RRP_SNP2PP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/RRP_SNP2PP>-HEUR_ID = 1.
</SAPAPO/RRP_SNP2PP>-ORDER_SELECTOR = 1.
</SAPAPO/RRP_SNP2PP>-PPDS_ORDER = 1.
</SAPAPO/RRP_SNP2PP>-LOTSIZE = 1.
</SAPAPO/RRP_SNP2PP>-PLANNER_PPS = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/RRP_SNP2PP INTO WA_/SAPAPO/RRP_SNP2PP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/RRP_SNP2PP-MATNR, sy-vline,
  WA_/SAPAPO/RRP_SNP2PP-LOCNO, sy-vline,
  WA_/SAPAPO/RRP_SNP2PP-VERSION, sy-vline,
  WA_/SAPAPO/RRP_SNP2PP-OFFSET, sy-vline,
  WA_/SAPAPO/RRP_SNP2PP-DIALOG, sy-vline,
  WA_/SAPAPO/RRP_SNP2PP-USE_SNP_SOURCES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/RRP_SNP2PP 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_/SAPAPO/RRP_SNP2PP 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_/SAPAPO/RRP_SNP2PP INTO WA_/SAPAPO/RRP_SNP2PP.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_SNP2PP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_SNP2PP-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VRSIO, internal->external for field VERSION
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_SNP2PP-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_SNP2PP-VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARE2, internal->external for field PAREAID
CALL FUNCTION 'CONVERSION_EXIT_PARE2_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_SNP2PP-PAREAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_SNP2PP-PAREAID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field SAFETY_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_SNP2PP-SAFETY_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_SNP2PP-SAFETY_TIME.
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_/SAPAPO/RRP_SNP2PP_STR, 
HEUR_ID TYPE STRING,
ORDER_SELECTOR TYPE STRING,
PPDS_ORDER TYPE STRING,
LOTSIZE TYPE STRING,
PLANNER_PPS TYPE STRING,
MATNR TYPE STRING,
LOCNO TYPE STRING,
VERSION TYPE STRING,
OFFSET TYPE STRING,
DIALOG TYPE STRING,
USE_SNP_SOURCES TYPE STRING,
TBID TYPE STRING,
STRPRO_ID TYPE STRING,
PAREAID TYPE STRING,
SAFETY_TIME TYPE STRING,
NO_DISPLAY TYPE STRING,
PACKAGE_SIZE TYPE STRING,
PROPAREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/RRP_SNP2PP_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_/SAPAPO/RRP_SNP2PP_STR-HEUR_ID sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-ORDER_SELECTOR sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-PPDS_ORDER sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-LOTSIZE sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-PLANNER_PPS sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-MATNR sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-LOCNO sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-VERSION sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-OFFSET sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-DIALOG sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-USE_SNP_SOURCES sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-TBID sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-STRPRO_ID sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-PAREAID sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-SAFETY_TIME sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-NO_DISPLAY sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-PACKAGE_SIZE sy-vline 
WA_/SAPAPO/RRP_SNP2PP_STR-PROPAREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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