ABAP Select data from SAP table PMXDAQ_T_OCCU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMXDAQ_T_OCCU
*  INTO TABLE @DATA(IT_PMXDAQ_T_OCCU2).
*--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_PMXDAQ_T_OCCU INDEX 1 INTO DATA(WA_PMXDAQ_T_OCCU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMXDAQ_T_OCCU>-SECTN = 1.
<PMXDAQ_T_OCCU>-OCBEG = 1.
<PMXDAQ_T_OCCU>-OCEND = 1.
<PMXDAQ_T_OCCU>-TRSN = 1.
<PMXDAQ_T_OCCU>-OCRSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMXDAQ_T_OCCU-PAYID, sy-vline,
  WA_PMXDAQ_T_OCCU-ABKRS, sy-vline,
  WA_PMXDAQ_T_OCCU-BUKRS, sy-vline,
  WA_PMXDAQ_T_OCCU-WERKS, sy-vline,
  WA_PMXDAQ_T_OCCU-BTRTL, sy-vline,
  WA_PMXDAQ_T_OCCU-PERSG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMXDAQ_T_OCCU 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_PMXDAQ_T_OCCU 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_PMXDAQ_T_OCCU INTO WA_PMXDAQ_T_OCCU.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMXDAQ_T_OCCU-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMXDAQ_T_OCCU-KOSTL.
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_PMXDAQ_T_OCCU_STR, 
SECTN TYPE STRING,
OCBEG TYPE STRING,
OCEND TYPE STRING,
TRSN TYPE STRING,
OCRSN TYPE STRING,
PAYID TYPE STRING,
ABKRS TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
KOSTL TYPE STRING,
SPLIT TYPE STRING,
HIRDA TYPE STRING,
FIRDA TYPE STRING,
SNRTY TYPE STRING,
PLANS TYPE STRING,
FSDIA TYPE STRING,
SDIA TYPE STRING,
SDIFJ TYPE STRING,
SDIVR TYPE STRING,
SDI TYPE STRING,
SDIMX TYPE STRING,
FPPER TYPE STRING,
INPER TYPE STRING,
IPEND TYPE STRING,
SRTZA TYPE STRING,
INOCR TYPE STRING,
INPID TYPE STRING,
PAYDT TYPE STRING,
LAST_SPLIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMXDAQ_T_OCCU_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_PMXDAQ_T_OCCU_STR-SECTN sy-vline 
WA_PMXDAQ_T_OCCU_STR-OCBEG sy-vline 
WA_PMXDAQ_T_OCCU_STR-OCEND sy-vline 
WA_PMXDAQ_T_OCCU_STR-TRSN sy-vline 
WA_PMXDAQ_T_OCCU_STR-OCRSN sy-vline 
WA_PMXDAQ_T_OCCU_STR-PAYID sy-vline 
WA_PMXDAQ_T_OCCU_STR-ABKRS sy-vline 
WA_PMXDAQ_T_OCCU_STR-BUKRS sy-vline 
WA_PMXDAQ_T_OCCU_STR-WERKS sy-vline 
WA_PMXDAQ_T_OCCU_STR-BTRTL sy-vline 
WA_PMXDAQ_T_OCCU_STR-PERSG sy-vline 
WA_PMXDAQ_T_OCCU_STR-PERSK sy-vline 
WA_PMXDAQ_T_OCCU_STR-KOSTL sy-vline 
WA_PMXDAQ_T_OCCU_STR-SPLIT sy-vline 
WA_PMXDAQ_T_OCCU_STR-HIRDA sy-vline 
WA_PMXDAQ_T_OCCU_STR-FIRDA sy-vline 
WA_PMXDAQ_T_OCCU_STR-SNRTY sy-vline 
WA_PMXDAQ_T_OCCU_STR-PLANS sy-vline 
WA_PMXDAQ_T_OCCU_STR-FSDIA sy-vline 
WA_PMXDAQ_T_OCCU_STR-SDIA sy-vline 
WA_PMXDAQ_T_OCCU_STR-SDIFJ sy-vline 
WA_PMXDAQ_T_OCCU_STR-SDIVR sy-vline 
WA_PMXDAQ_T_OCCU_STR-SDI sy-vline 
WA_PMXDAQ_T_OCCU_STR-SDIMX sy-vline 
WA_PMXDAQ_T_OCCU_STR-FPPER sy-vline 
WA_PMXDAQ_T_OCCU_STR-INPER sy-vline 
WA_PMXDAQ_T_OCCU_STR-IPEND sy-vline 
WA_PMXDAQ_T_OCCU_STR-SRTZA sy-vline 
WA_PMXDAQ_T_OCCU_STR-INOCR sy-vline 
WA_PMXDAQ_T_OCCU_STR-INPID sy-vline 
WA_PMXDAQ_T_OCCU_STR-PAYDT sy-vline 
WA_PMXDAQ_T_OCCU_STR-LAST_SPLIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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