ABAP Select data from SAP table /SAPAPO/RRP_MATLOTSZ 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_MATLOTSZ 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_MATLOTSZ. 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_MATLOTSZ 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_MATLOTSZ TYPE STANDARD TABLE OF /SAPAPO/RRP_MATLOTSZ,
      WA_/SAPAPO/RRP_MATLOTSZ TYPE /SAPAPO/RRP_MATLOTSZ,
      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_MATLOTSZ> TYPE /SAPAPO/RRP_MATLOTSZ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/RRP_MATLOTSZ
*  INTO TABLE @DATA(IT_/SAPAPO/RRP_MATLOTSZ2).
*--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_MATLOTSZ INDEX 1 INTO DATA(WA_/SAPAPO/RRP_MATLOTSZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/RRP_MATLOTSZ>-MANDT = 1.
</SAPAPO/RRP_MATLOTSZ>-LSZID = 1.
</SAPAPO/RRP_MATLOTSZ>-INCLUDE_PROF = 1.
</SAPAPO/RRP_MATLOTSZ>-LSZKY = 1.
</SAPAPO/RRP_MATLOTSZ>-LSZTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/RRP_MATLOTSZ-SL_LSZ_RANGE, sy-vline,
  WA_/SAPAPO/RRP_MATLOTSZ-BSTFE, sy-vline,
  WA_/SAPAPO/RRP_MATLOTSZ-BSTMI, sy-vline,
  WA_/SAPAPO/RRP_MATLOTSZ-BSTMA, sy-vline,
  WA_/SAPAPO/RRP_MATLOTSZ-BSTRF, sy-vline,
  WA_/SAPAPO/RRP_MATLOTSZ-AUSSS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/RRP_MATLOTSZ 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_MATLOTSZ 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_MATLOTSZ INTO WA_/SAPAPO/RRP_MATLOTSZ.


*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 CUNIT, internal->external for field LSUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_MATLOTSZ-LSUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_MATLOTSZ-LSUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRG, internal->external for field SVTTY
CALL FUNCTION 'CONVERSION_EXIT_TSTRG_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_MATLOTSZ-SVTTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_MATLOTSZ-SVTTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRG, internal->external for field REORD_DUR
CALL FUNCTION 'CONVERSION_EXIT_TSTRG_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_MATLOTSZ-REORD_DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_MATLOTSZ-REORD_DUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRG, internal->external for field TARGET_DUR
CALL FUNCTION 'CONVERSION_EXIT_TSTRG_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_MATLOTSZ-TARGET_DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_MATLOTSZ-TARGET_DUR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RRP_MATLOTSZ-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RRP_MATLOTSZ-MEINS.
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_MATLOTSZ_STR, 
MANDT TYPE STRING,
LSZID TYPE STRING,
INCLUDE_PROF TYPE STRING,
LSZKY TYPE STRING,
LSZTX TYPE STRING,
SL_LSZ_RANGE TYPE STRING,
BSTFE TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
BSTRF TYPE STRING,
AUSSS TYPE STRING,
RDPRF TYPE STRING,
LSUOM TYPE STRING,
LGKND TYPE STRING,
LASTL TYPE STRING,
UNTKZ TYPE STRING,
SVTTY TYPE STRING,
REORD_DUR TYPE STRING,
TARGET_DUR TYPE STRING,
REORD_METHOD TYPE STRING,
TARGET_METHOD TYPE STRING,
PERVR TYPE STRING,
PER_AMOUNT TYPE STRING,
TSTRID TYPE STRING,
REQ_COVER_TYPE TYPE STRING,
REQ_COVER_FLAG TYPE STRING,
SNPLOTSTRAT TYPE STRING,
SNPLOTBEG TYPE STRING,
PERIOD_FACTOR_TDS TYPE STRING,
SL_LSZ_EXACT TYPE STRING,
SL_LSZ_FIXED TYPE STRING,
SL_LSZ_PERI TYPE STRING,
SL_LSZ_REORD TYPE STRING,
CATGRP TYPE STRING,
MATID TYPE STRING,
LOCID TYPE STRING,
PEGID TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
MODEL TYPE STRING,
CHARACTERISTICS TYPE STRING,
SAFTY TYPE STRING,
MSDP_SB_METHOD TYPE STRING,
REORD TYPE STRING,
MAXSTOCK TYPE STRING,
MEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/RRP_MATLOTSZ_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_MATLOTSZ_STR-MANDT sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LSZID sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-INCLUDE_PROF sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LSZKY sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LSZTX sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SL_LSZ_RANGE sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-BSTFE sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-BSTMI sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-BSTMA sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-BSTRF sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-AUSSS sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-RDPRF sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LSUOM sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LGKND sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LASTL sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-UNTKZ sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SVTTY sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-REORD_DUR sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-TARGET_DUR sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-REORD_METHOD sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-TARGET_METHOD sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-PERVR sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-PER_AMOUNT sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-TSTRID sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-REQ_COVER_TYPE sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-REQ_COVER_FLAG sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SNPLOTSTRAT sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SNPLOTBEG sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-PERIOD_FACTOR_TDS sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SL_LSZ_EXACT sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SL_LSZ_FIXED sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SL_LSZ_PERI sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SL_LSZ_REORD sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-CATGRP sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MATID sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-LOCID sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-PEGID sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MATNR sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MAKTX sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MODEL sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-CHARACTERISTICS sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-SAFTY sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MSDP_SB_METHOD sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-REORD sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MAXSTOCK sy-vline 
WA_/SAPAPO/RRP_MATLOTSZ_STR-MEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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