ABAP Select data from SAP table HRTMC_S_MOBILITY_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTMC_S_MOBILITY_EXT
*  INTO TABLE @DATA(IT_HRTMC_S_MOBILITY_EXT2).
*--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_HRTMC_S_MOBILITY_EXT INDEX 1 INTO DATA(WA_HRTMC_S_MOBILITY_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTMC_S_MOBILITY_EXT>-MANDT = 1.
<HRTMC_S_MOBILITY_EXT>-PLVAR = 1.
<HRTMC_S_MOBILITY_EXT>-OTYPE = 1.
<HRTMC_S_MOBILITY_EXT>-OBJID = 1.
<HRTMC_S_MOBILITY_EXT>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTMC_S_MOBILITY_EXT-SUBTY, sy-vline,
  WA_HRTMC_S_MOBILITY_EXT-ISTAT, sy-vline,
  WA_HRTMC_S_MOBILITY_EXT-PRIOX, sy-vline,
  WA_HRTMC_S_MOBILITY_EXT-BEGDA, sy-vline,
  WA_HRTMC_S_MOBILITY_EXT-ENDDA, sy-vline,
  WA_HRTMC_S_MOBILITY_EXT-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTMC_S_MOBILITY_EXT 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_HRTMC_S_MOBILITY_EXT 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_HRTMC_S_MOBILITY_EXT INTO WA_HRTMC_S_MOBILITY_EXT.


*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 ISOLA, internal->external for field DOC_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_HRTMC_S_MOBILITY_EXT-DOC_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRTMC_S_MOBILITY_EXT-DOC_LANGU.
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_HRTMC_S_MOBILITY_EXT_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
GENERAL_MOBILITY TYPE STRING,
COMMENT_CLASS TYPE STRING,
COMMENT_ID TYPE STRING,
TABNR TYPE STRING,
COMMENT_TXT TYPE STRING,
DOC_LANGU TYPE STRING,
GENERAL_MOBILITY_DESCR TYPE STRING,
LOCATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTMC_S_MOBILITY_EXT_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_HRTMC_S_MOBILITY_EXT_STR-MANDT sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-PLVAR sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-OTYPE sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-OBJID sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-INFTY sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-SUBTY sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-ISTAT sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-PRIOX sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-BEGDA sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-ENDDA sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-VARYF sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-SEQNR sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-AEDTM sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-UNAME sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-REASN sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-HISTO sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-ITXNR sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-GENERAL_MOBILITY sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-COMMENT_CLASS sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-COMMENT_ID sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-TABNR sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-COMMENT_TXT sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-DOC_LANGU sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-GENERAL_MOBILITY_DESCR sy-vline 
WA_HRTMC_S_MOBILITY_EXT_STR-LOCATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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