ABAP Select data from SAP table PTRV_WEB_MILEAGE_DETAIL_PDF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_WEB_MILEAGE_DETAIL_PDF
*  INTO TABLE @DATA(IT_PTRV_WEB_MILEAGE_DETAIL_PDF2).
*--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_PTRV_WEB_MILEAGE_DETAIL_PDF INDEX 1 INTO DATA(WA_PTRV_WEB_MILEAGE_DETAIL_PDF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_WEB_MILEAGE_DETAIL_PDF>-DISPLAY_ONLY = 1.
<PTRV_WEB_MILEAGE_DETAIL_PDF>-DATUM = 1.
<PTRV_WEB_MILEAGE_DETAIL_PDF>-KMGES = 1.
<PTRV_WEB_MILEAGE_DETAIL_PDF>-KMINL = 1.
<PTRV_WEB_MILEAGE_DETAIL_PDF>-KFZKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_WEB_MILEAGE_DETAIL_PDF-KFZMA, sy-vline,
  WA_PTRV_WEB_MILEAGE_DETAIL_PDF-AZMIT, sy-vline,
  WA_PTRV_WEB_MILEAGE_DETAIL_PDF-KGGEP, sy-vline,
  WA_PTRV_WEB_MILEAGE_DETAIL_PDF-BETPA, sy-vline,
  WA_PTRV_WEB_MILEAGE_DETAIL_PDF-KZPMF, sy-vline,
  WA_PTRV_WEB_MILEAGE_DETAIL_PDF-BEREI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_WEB_MILEAGE_DETAIL_PDF 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_PTRV_WEB_MILEAGE_DETAIL_PDF 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_PTRV_WEB_MILEAGE_DETAIL_PDF INTO WA_PTRV_WEB_MILEAGE_DETAIL_PDF.


*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 ALPHA, internal->external for field ADRNRAD1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_WEB_MILEAGE_DETAIL_PDF-ADRNRAD1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_WEB_MILEAGE_DETAIL_PDF-ADRNRAD1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CITY_CODEAD1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_WEB_MILEAGE_DETAIL_PDF-CITY_CODEAD1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_WEB_MILEAGE_DETAIL_PDF-CITY_CODEAD1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNRAD2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_WEB_MILEAGE_DETAIL_PDF-ADRNRAD2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_WEB_MILEAGE_DETAIL_PDF-ADRNRAD2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CITY_CODEAD2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_WEB_MILEAGE_DETAIL_PDF-CITY_CODEAD2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_WEB_MILEAGE_DETAIL_PDF-CITY_CODEAD2.
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_PTRV_WEB_MILEAGE_DETAIL_PDF_STR, 
DISPLAY_ONLY TYPE STRING,
DATUM TYPE STRING,
KMGES TYPE STRING,
KMINL TYPE STRING,
KFZKZ TYPE STRING,
KFZMA TYPE STRING,
AZMIT TYPE STRING,
KGGEP TYPE STRING,
BETPA TYPE STRING,
KZPMF TYPE STRING,
BEREI TYPE STRING,
LAND1 TYPE STRING,
PKWKL TYPE STRING,
RGION TYPE STRING,
KMVNR TYPE STRING,
INLKM TYPE STRING,
AUSKM TYPE STRING,
LOC_FROM TYPE STRING,
LOC_TO TYPE STRING,
ADD_INFO TYPE STRING,
COMPUTED_DIST TYPE STRING,
ROUND_TRIP TYPE STRING,
CONSUMPTION_TYPE TYPE STRING,
FUEL_RCPT_EXIST TYPE STRING,
FUEL_PRICE TYPE STRING,
FUEL_PRICE_CURR TYPE STRING,
ADRNRAD1 TYPE STRING,
CITYAD1 TYPE STRING,
CITY_DISTRICTAD1 TYPE STRING,
POST_CODEAD1 TYPE STRING,
CITY_CODEAD1 TYPE STRING,
STREETAD1 TYPE STRING,
HOUSE_NUMAD1 TYPE STRING,
COUNTRYAD1 TYPE STRING,
REGIONAD1 TYPE STRING,
ADRNRAD2 TYPE STRING,
CITYAD2 TYPE STRING,
CITY_DISTRICTAD2 TYPE STRING,
POST_CODEAD2 TYPE STRING,
CITY_CODEAD2 TYPE STRING,
STREETAD2 TYPE STRING,
HOUSE_NUMAD2 TYPE STRING,
COUNTRYAD2 TYPE STRING,
REGIONAD2 TYPE STRING,
KEY_MILE TYPE STRING,
MIL_DATE TYPE STRING,
M_TOTAL TYPE STRING,
VALUE_TYPE_NAME TYPE STRING,
VALUE_CHAR TYPE STRING,
EDITOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_WEB_MILEAGE_DETAIL_PDF_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_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-DISPLAY_ONLY sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-DATUM sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KMGES sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KMINL sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KFZKZ sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KFZMA sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-AZMIT sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KGGEP sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-BETPA sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KZPMF sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-BEREI sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-LAND1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-PKWKL sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-RGION sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KMVNR sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-INLKM sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-AUSKM sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-LOC_FROM sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-LOC_TO sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-ADD_INFO sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-COMPUTED_DIST sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-ROUND_TRIP sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CONSUMPTION_TYPE sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-FUEL_RCPT_EXIST sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-FUEL_PRICE sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-FUEL_PRICE_CURR sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-ADRNRAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITYAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITY_DISTRICTAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-POST_CODEAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITY_CODEAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-STREETAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-HOUSE_NUMAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-COUNTRYAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-REGIONAD1 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-ADRNRAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITYAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITY_DISTRICTAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-POST_CODEAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-CITY_CODEAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-STREETAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-HOUSE_NUMAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-COUNTRYAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-REGIONAD2 sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-KEY_MILE sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-MIL_DATE sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-M_TOTAL sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-VALUE_TYPE_NAME sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-VALUE_CHAR sy-vline 
WA_PTRV_WEB_MILEAGE_DETAIL_PDF_STR-EDITOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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