ABAP Select data from SAP table PPMRP_MATERIAL_AVAILABILITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPMRP_MATERIAL_AVAILABILITY
*  INTO TABLE @DATA(IT_PPMRP_MATERIAL_AVAILABILITY2).
*--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_PPMRP_MATERIAL_AVAILABILITY INDEX 1 INTO DATA(WA_PPMRP_MATERIAL_AVAILABILITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPMRP_MATERIAL_AVAILABILITY>-MATERIALID = 1.
<PPMRP_MATERIAL_AVAILABILITY>-MRPAREA = 1.
<PPMRP_MATERIAL_AVAILABILITY>-MRPPLANT = 1.
<PPMRP_MATERIAL_AVAILABILITY>-MATERIALSHORTAGEDEFINITIONID = 1.
<PPMRP_MATERIAL_AVAILABILITY>-MRPELEMENTAVAILYORRQMTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPMRP_MATERIAL_AVAILABILITY-MRPAVAILABILITY, sy-vline,
  WA_PPMRP_MATERIAL_AVAILABILITY-MRPAVAILABLEQUANTITY, sy-vline,
  WA_PPMRP_MATERIAL_AVAILABILITY-MATERIALBASEUNIT, sy-vline,
  WA_PPMRP_MATERIAL_AVAILABILITY-UNITOFMEASURECOMMERCIALNAME, sy-vline,
  WA_PPMRP_MATERIAL_AVAILABILITY-MRPPLANNINGSEGMENTNUMBER, sy-vline,
  WA_PPMRP_MATERIAL_AVAILABILITY-MRPPLANNINGSEGMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPMRP_MATERIAL_AVAILABILITY 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_PPMRP_MATERIAL_AVAILABILITY 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_PPMRP_MATERIAL_AVAILABILITY INTO WA_PPMRP_MATERIAL_AVAILABILITY.


*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 MATERIALID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PPMRP_MATERIAL_AVAILABILITY-MATERIALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPMRP_MATERIAL_AVAILABILITY-MATERIALID.
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_PPMRP_MATERIAL_AVAILABILITY_STR, 
MATERIALID TYPE STRING,
MRPAREA TYPE STRING,
MRPPLANT TYPE STRING,
MATERIALSHORTAGEDEFINITIONID TYPE STRING,
MRPELEMENTAVAILYORRQMTDATE TYPE STRING,
MRPAVAILABILITY TYPE STRING,
MRPAVAILABLEQUANTITY TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
UNITOFMEASURECOMMERCIALNAME TYPE STRING,
MRPPLANNINGSEGMENTNUMBER TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
DUMMY_MRP_MATERIAL_AVAIL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPMRP_MATERIAL_AVAILABILITY_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_PPMRP_MATERIAL_AVAILABILITY_STR-MATERIALID sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPAREA sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPPLANT sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MATERIALSHORTAGEDEFINITIONID sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPELEMENTAVAILYORRQMTDATE sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPAVAILABILITY sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPAVAILABLEQUANTITY sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MATERIALBASEUNIT sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-UNITOFMEASURECOMMERCIALNAME sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPPLANNINGSEGMENTNUMBER sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-MRPPLANNINGSEGMENTTYPE sy-vline 
WA_PPMRP_MATERIAL_AVAILABILITY_STR-DUMMY_MRP_MATERIAL_AVAIL sy-vline      INTO ld_text SEPARATED BY SPACE.

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