ABAP Select data from SAP table DIACL_MEAS_DOC_DS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIACL_MEAS_DOC_DS
*  INTO TABLE @DATA(IT_DIACL_MEAS_DOC_DS2).
*--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_DIACL_MEAS_DOC_DS INDEX 1 INTO DATA(WA_DIACL_MEAS_DOC_DS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIACL_MEAS_DOC_DS>-MANDT = 1.
<DIACL_MEAS_DOC_DS>-MDOCM = 1.
<DIACL_MEAS_DOC_DS>-POINT = 1.
<DIACL_MEAS_DOC_DS>-IDATE = 1.
<DIACL_MEAS_DOC_DS>-ITIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIACL_MEAS_DOC_DS-INVTS, sy-vline,
  WA_DIACL_MEAS_DOC_DS-CNTRG, sy-vline,
  WA_DIACL_MEAS_DOC_DS-MDTXT, sy-vline,
  WA_DIACL_MEAS_DOC_DS-MLANG, sy-vline,
  WA_DIACL_MEAS_DOC_DS-KZLTX, sy-vline,
  WA_DIACL_MEAS_DOC_DS-READR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIACL_MEAS_DOC_DS 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_DIACL_MEAS_DOC_DS 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_DIACL_MEAS_DOC_DS INTO WA_DIACL_MEAS_DOC_DS.


*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 MDOCM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-MDOCM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-MDOCM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field MLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-MLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-MLANG.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit LUNIT, internal->external for field UNITR
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-UNITR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-UNITR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field LOCAS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-LOCAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-LOCAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITC
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITS
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-UNITS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-UNITS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-TPLNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIACL_MEAS_DOC_DS-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIACL_MEAS_DOC_DS-QMNUM.
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_DIACL_MEAS_DOC_DS_STR, 
MANDT TYPE STRING,
MDOCM TYPE STRING,
POINT TYPE STRING,
IDATE TYPE STRING,
ITIME TYPE STRING,
INVTS TYPE STRING,
CNTRG TYPE STRING,
MDTXT TYPE STRING,
MLANG TYPE STRING,
KZLTX TYPE STRING,
READR TYPE STRING,
ERDAT TYPE STRING,
ERUHR TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
LVORM TYPE STRING,
GENER TYPE STRING,
PRUEFLOS TYPE STRING,
VORGLFNR TYPE STRING,
MERKNR TYPE STRING,
DETAILERG TYPE STRING,
ROOTD TYPE STRING,
TOLTY TYPE STRING,
TOLID TYPE STRING,
WOOBJ TYPE STRING,
DOCAF TYPE STRING,
READG TYPE STRING,
READGI TYPE STRING,
RECDV TYPE STRING,
RECDVI TYPE STRING,
RECDU TYPE STRING,
CNTRR TYPE STRING,
CNTRRI TYPE STRING,
CDIFF TYPE STRING,
CDIFFI TYPE STRING,
IDIFF TYPE STRING,
EXCHG TYPE STRING,
TOTEX TYPE STRING,
CODCT TYPE STRING,
CODGR TYPE STRING,
VLCOD TYPE STRING,
CVERS TYPE STRING,
PREST TYPE STRING,
CANCL TYPE STRING,
WOOB1 TYPE STRING,
PROBENR TYPE STRING,
MBEWERTG TYPE STRING,
INTVL TYPE STRING,
IDAT1 TYPE STRING,
ITIM1 TYPE STRING,
TMSTP_BW TYPE STRING,
LOGSYSTEM TYPE STRING,
RECDC TYPE STRING,
UNITR TYPE STRING,
RDTOT TYPE STRING,
CNTRC TYPE STRING,
CDIFC TYPE STRING,
PSORT TYPE STRING,
PTTXT TYPE STRING,
MPTYP TYPE STRING,
LOCAS TYPE STRING,
DSTXT TYPE STRING,
DESIC TYPE STRING,
CJUMC TYPE STRING,
PYEAC TYPE STRING,
UNITC TYPE STRING,
UNITS TYPE STRING,
TRANS TYPE STRING,
TPLNR TYPE STRING,
EQUNR TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
QMNUM TYPE STRING,
UNIT_TXT TYPE STRING,
UNIT_TXT2 TYPE STRING,
READC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIACL_MEAS_DOC_DS_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_DIACL_MEAS_DOC_DS_STR-MANDT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MDOCM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-POINT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-IDATE sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ITIME sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-INVTS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CNTRG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MDTXT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MLANG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-KZLTX sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-READR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ERDAT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ERUHR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ERNAM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-AEDAT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-AENAM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-LVORM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-GENER sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PRUEFLOS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-VORGLFNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MERKNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-DETAILERG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ROOTD sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TOLTY sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TOLID sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-WOOBJ sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-DOCAF sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-READG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-READGI sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-RECDV sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-RECDVI sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-RECDU sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CNTRR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CNTRRI sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CDIFF sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CDIFFI sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-IDIFF sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-EXCHG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TOTEX sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CODCT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CODGR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-VLCOD sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CVERS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PREST sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CANCL sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-WOOB1 sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PROBENR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MBEWERTG sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-INTVL sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-IDAT1 sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-ITIM1 sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TMSTP_BW sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-LOGSYSTEM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-RECDC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-UNITR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-RDTOT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CNTRC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CDIFC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PSORT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PTTXT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-MPTYP sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-LOCAS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-DSTXT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-DESIC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-CJUMC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-PYEAC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-UNITC sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-UNITS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TRANS sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-TPLNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-EQUNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-AUFNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-VORNR sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-QMNUM sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-UNIT_TXT sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-UNIT_TXT2 sy-vline 
WA_DIACL_MEAS_DOC_DS_STR-READC sy-vline      INTO ld_text SEPARATED BY SPACE.

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