ABAP Select data from SAP table P41_FORM_MIAQ2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P41_FORM_MIAQ2 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 P41_FORM_MIAQ2. 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 P41_FORM_MIAQ2 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_P41_FORM_MIAQ2 TYPE STANDARD TABLE OF P41_FORM_MIAQ2,
      WA_P41_FORM_MIAQ2 TYPE P41_FORM_MIAQ2,
      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: <P41_FORM_MIAQ2> TYPE P41_FORM_MIAQ2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P41_FORM_MIAQ2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P41_FORM_MIAQ2
  INTO TABLE IT_P41_FORM_MIAQ2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P41_FORM_MIAQ2
*  INTO TABLE @DATA(IT_P41_FORM_MIAQ22).
*--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_P41_FORM_MIAQ2 INDEX 1 INTO DATA(WA_P41_FORM_MIAQ22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P41_FORM_MIAQ2 ASSIGNING <P41_FORM_MIAQ2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P41_FORM_MIAQ2>-SIMOD = 1.
<P41_FORM_MIAQ2>-SIANM = 1.
<P41_FORM_MIAQ2>-SI_BPNAM = 1.
<P41_FORM_MIAQ2>-BP_REPRE = 1.
<P41_FORM_MIAQ2>-PRT_YEAR = 1.

ENDLOOP.

LOOP AT IT_P41_FORM_MIAQ2 INTO WA_P41_FORM_MIAQ2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P41_FORM_MIAQ2-PRT_MONTH, sy-vline,
  WA_P41_FORM_MIAQ2-PRT_DAY, sy-vline,
  WA_P41_FORM_MIAQ2-PERNR, sy-vline,
  WA_P41_FORM_MIAQ2-ENAME, sy-vline,
  WA_P41_FORM_MIAQ2-REGNO, sy-vline,
  WA_P41_FORM_MIAQ2-ACQDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P41_FORM_MIAQ2 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_P41_FORM_MIAQ2 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_P41_FORM_MIAQ2 INTO WA_P41_FORM_MIAQ2.


*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 REGNO, internal->external for field REGNO
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_P41_FORM_MIAQ2-REGNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P41_FORM_MIAQ2-REGNO.
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_P41_FORM_MIAQ2_STR, 
SIMOD TYPE STRING,
SIANM TYPE STRING,
SI_BPNAM TYPE STRING,
BP_REPRE TYPE STRING,
PRT_YEAR TYPE STRING,
PRT_MONTH TYPE STRING,
PRT_DAY TYPE STRING,
PERNR TYPE STRING,
ENAME TYPE STRING,
REGNO TYPE STRING,
ACQDT TYPE STRING,
SIMSC TYPE STRING,
NATIO TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
TELNR TYPE STRING,
DEPENDANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P41_FORM_MIAQ2_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_P41_FORM_MIAQ2_STR-SIMOD sy-vline 
WA_P41_FORM_MIAQ2_STR-SIANM sy-vline 
WA_P41_FORM_MIAQ2_STR-SI_BPNAM sy-vline 
WA_P41_FORM_MIAQ2_STR-BP_REPRE sy-vline 
WA_P41_FORM_MIAQ2_STR-PRT_YEAR sy-vline 
WA_P41_FORM_MIAQ2_STR-PRT_MONTH sy-vline 
WA_P41_FORM_MIAQ2_STR-PRT_DAY sy-vline 
WA_P41_FORM_MIAQ2_STR-PERNR sy-vline 
WA_P41_FORM_MIAQ2_STR-ENAME sy-vline 
WA_P41_FORM_MIAQ2_STR-REGNO sy-vline 
WA_P41_FORM_MIAQ2_STR-ACQDT sy-vline 
WA_P41_FORM_MIAQ2_STR-SIMSC sy-vline 
WA_P41_FORM_MIAQ2_STR-NATIO sy-vline 
WA_P41_FORM_MIAQ2_STR-PSTLZ sy-vline 
WA_P41_FORM_MIAQ2_STR-ORT01 sy-vline 
WA_P41_FORM_MIAQ2_STR-TELNR sy-vline 
WA_P41_FORM_MIAQ2_STR-DEPENDANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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