ABAP Select data from SAP table MMRP_POP_MATLOC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMRP_POP_MATLOC
*  INTO TABLE @DATA(IT_MMRP_POP_MATLOC2).
*--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_MMRP_POP_MATLOC INDEX 1 INTO DATA(WA_MMRP_POP_MATLOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMRP_POP_MATLOC>-MATID = 1.
<MMRP_POP_MATLOC>-MATNR = 1.
<MMRP_POP_MATLOC>-LOCID = 1.
<MMRP_POP_MATLOC>-LOCNO = 1.
<MMRP_POP_MATLOC>-DO_EXPLOSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMRP_POP_MATLOC-INIT_POSVARS, sy-vline,
  WA_MMRP_POP_MATLOC-INIT_TOKENS, sy-vline,
  WA_MMRP_POP_MATLOC-INIT_POSVARS_ORG, sy-vline,
  WA_MMRP_POP_MATLOC-CREATE_TS, sy-vline,
  WA_MMRP_POP_MATLOC-FIX_ORDERS, sy-vline,
  WA_MMRP_POP_MATLOC-SPECIAL_RUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMRP_POP_MATLOC 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_MMRP_POP_MATLOC 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_MMRP_POP_MATLOC INTO WA_MMRP_POP_MATLOC.


*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 PRDID, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_PRDID_OUTPUT'
  EXPORTING
    input =                      WA_MMRP_POP_MATLOC-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRP_POP_MATLOC-MATID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit LOCID, internal->external for field LOCID
CALL FUNCTION 'CONVERSION_EXIT_LOCID_OUTPUT'
  EXPORTING
    input =                      WA_MMRP_POP_MATLOC-LOCID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRP_POP_MATLOC-LOCID.
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_MMRP_POP_MATLOC_STR, 
MATID TYPE STRING,
MATNR TYPE STRING,
LOCID TYPE STRING,
LOCNO TYPE STRING,
DO_EXPLOSION TYPE STRING,
INIT_POSVARS TYPE STRING,
INIT_TOKENS TYPE STRING,
INIT_POSVARS_ORG TYPE STRING,
CREATE_TS TYPE STRING,
FIX_ORDERS TYPE STRING,
SPECIAL_RUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMRP_POP_MATLOC_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_MMRP_POP_MATLOC_STR-MATID sy-vline 
WA_MMRP_POP_MATLOC_STR-MATNR sy-vline 
WA_MMRP_POP_MATLOC_STR-LOCID sy-vline 
WA_MMRP_POP_MATLOC_STR-LOCNO sy-vline 
WA_MMRP_POP_MATLOC_STR-DO_EXPLOSION sy-vline 
WA_MMRP_POP_MATLOC_STR-INIT_POSVARS sy-vline 
WA_MMRP_POP_MATLOC_STR-INIT_TOKENS sy-vline 
WA_MMRP_POP_MATLOC_STR-INIT_POSVARS_ORG sy-vline 
WA_MMRP_POP_MATLOC_STR-CREATE_TS sy-vline 
WA_MMRP_POP_MATLOC_STR-FIX_ORDERS sy-vline 
WA_MMRP_POP_MATLOC_STR-SPECIAL_RUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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