ABAP Select data from SAP table PDV_MASS_MOD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDV_MASS_MOD
*  INTO TABLE @DATA(IT_PDV_MASS_MOD2).
*--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_PDV_MASS_MOD INDEX 1 INTO DATA(WA_PDV_MASS_MOD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDV_MASS_MOD>-PRODUCT = 1.
<PDV_MASS_MOD>-LOCATION = 1.
<PDV_MASS_MOD>-PPE_NAME = 1.
<PDV_MASS_MOD>-PPEGUID = 1.
<PDV_MASS_MOD>-ROUTING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDV_MASS_MOD-ACTHDR_GUID, sy-vline,
  WA_PDV_MASS_MOD-OPRNAME, sy-vline,
  WA_PDV_MASS_MOD-OPRGUID, sy-vline,
  WA_PDV_MASS_MOD-ACTNAME, sy-vline,
  WA_PDV_MASS_MOD-MODNAME, sy-vline,
  WA_PDV_MASS_MOD-AENNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDV_MASS_MOD 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_PDV_MASS_MOD 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_PDV_MASS_MOD INTO WA_PDV_MASS_MOD.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_MOD-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_MOD-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field J_UNITD
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_MOD-J_UNITD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_MOD-J_UNITD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field L_MAX_BREAK_TUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_MOD-L_MAX_BREAK_TUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_MOD-L_MAX_BREAK_TUNIT.
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_PDV_MASS_MOD_STR, 
PRODUCT TYPE STRING,
LOCATION TYPE STRING,
PPE_NAME TYPE STRING,
PPEGUID TYPE STRING,
ROUTING TYPE STRING,
ACTHDR_GUID TYPE STRING,
OPRNAME TYPE STRING,
OPRGUID TYPE STRING,
ACTNAME TYPE STRING,
MODNAME TYPE STRING,
AENNR TYPE STRING,
PAGUID TYPE STRING,
PNGUID TYPE STRING,
G_PRIM_RES TYPE STRING,
SEC_RES TYPE STRING,
F_MOD_LOCATION TYPE STRING,
A_CREADAT TYPE STRING,
B_CREABY TYPE STRING,
C_CHNGDAT TYPE STRING,
D_CHNGBY TYPE STRING,
E_TEXT TYPE STRING,
H_DURVAR TYPE STRING,
I_DURFIX TYPE STRING,
J_UNITD TYPE STRING,
K_MAX_BREAK TYPE STRING,
L_MAX_BREAK_TUNIT TYPE STRING,
M_PRIO TYPE STRING,
N_PROD_IN_SHIFT TYPE STRING,
O_RPNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDV_MASS_MOD_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_PDV_MASS_MOD_STR-PRODUCT sy-vline 
WA_PDV_MASS_MOD_STR-LOCATION sy-vline 
WA_PDV_MASS_MOD_STR-PPE_NAME sy-vline 
WA_PDV_MASS_MOD_STR-PPEGUID sy-vline 
WA_PDV_MASS_MOD_STR-ROUTING sy-vline 
WA_PDV_MASS_MOD_STR-ACTHDR_GUID sy-vline 
WA_PDV_MASS_MOD_STR-OPRNAME sy-vline 
WA_PDV_MASS_MOD_STR-OPRGUID sy-vline 
WA_PDV_MASS_MOD_STR-ACTNAME sy-vline 
WA_PDV_MASS_MOD_STR-MODNAME sy-vline 
WA_PDV_MASS_MOD_STR-AENNR sy-vline 
WA_PDV_MASS_MOD_STR-PAGUID sy-vline 
WA_PDV_MASS_MOD_STR-PNGUID sy-vline 
WA_PDV_MASS_MOD_STR-G_PRIM_RES sy-vline 
WA_PDV_MASS_MOD_STR-SEC_RES sy-vline 
WA_PDV_MASS_MOD_STR-F_MOD_LOCATION sy-vline 
WA_PDV_MASS_MOD_STR-A_CREADAT sy-vline 
WA_PDV_MASS_MOD_STR-B_CREABY sy-vline 
WA_PDV_MASS_MOD_STR-C_CHNGDAT sy-vline 
WA_PDV_MASS_MOD_STR-D_CHNGBY sy-vline 
WA_PDV_MASS_MOD_STR-E_TEXT sy-vline 
WA_PDV_MASS_MOD_STR-H_DURVAR sy-vline 
WA_PDV_MASS_MOD_STR-I_DURFIX sy-vline 
WA_PDV_MASS_MOD_STR-J_UNITD sy-vline 
WA_PDV_MASS_MOD_STR-K_MAX_BREAK sy-vline 
WA_PDV_MASS_MOD_STR-L_MAX_BREAK_TUNIT sy-vline 
WA_PDV_MASS_MOD_STR-M_PRIO sy-vline 
WA_PDV_MASS_MOD_STR-N_PROD_IN_SHIFT sy-vline 
WA_PDV_MASS_MOD_STR-O_RPNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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