ABAP Select data from SAP table QAPP_D01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QAPP_D01 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 QAPP_D01. 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 QAPP_D01 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_QAPP_D01 TYPE STANDARD TABLE OF QAPP_D01,
      WA_QAPP_D01 TYPE QAPP_D01,
      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: <QAPP_D01> TYPE QAPP_D01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QAPP_D01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QAPP_D01
  INTO TABLE IT_QAPP_D01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAPP_D01
*  INTO TABLE @DATA(IT_QAPP_D012).
*--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_QAPP_D01 INDEX 1 INTO DATA(WA_QAPP_D012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QAPP_D01 ASSIGNING <QAPP_D01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAPP_D01>-MANDT = 1.
<QAPP_D01>-PRUEFLOS = 1.
<QAPP_D01>-VORGLFNR = 1.
<QAPP_D01>-PROBENR = 1.
<QAPP_D01>-TEILLOS = 1.

ENDLOOP.

LOOP AT IT_QAPP_D01 INTO WA_QAPP_D01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAPP_D01-EQUNR, sy-vline,
  WA_QAPP_D01-TPLNR, sy-vline,
  WA_QAPP_D01-PHYNR, sy-vline,
  WA_QAPP_D01-USERC1, sy-vline,
  WA_QAPP_D01-USERC2, sy-vline,
  WA_QAPP_D01-USERN1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAPP_D01 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_QAPP_D01 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_QAPP_D01 INTO WA_QAPP_D01.


*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 PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PHYNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-PHYNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-PHYNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field USERC1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-USERC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-USERC1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field USERC2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAPP_D01-USERC2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPP_D01-USERC2.
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_QAPP_D01_STR, 
MANDT TYPE STRING,
PRUEFLOS TYPE STRING,
VORGLFNR TYPE STRING,
PROBENR TYPE STRING,
TEILLOS TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
PHYNR TYPE STRING,
USERC1 TYPE STRING,
USERC2 TYPE STRING,
USERN1 TYPE STRING,
USERN2 TYPE STRING,
USERD1 TYPE STRING,
USERT1 TYPE STRING,
TXTPPBEW TYPE STRING,
PRUEFER TYPE STRING,
ERSTELDAT TYPE STRING,
AENDERER TYPE STRING,
AENDERDAT TYPE STRING,
AENDERZEIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAPP_D01_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_QAPP_D01_STR-MANDT sy-vline 
WA_QAPP_D01_STR-PRUEFLOS sy-vline 
WA_QAPP_D01_STR-VORGLFNR sy-vline 
WA_QAPP_D01_STR-PROBENR sy-vline 
WA_QAPP_D01_STR-TEILLOS sy-vline 
WA_QAPP_D01_STR-EQUNR sy-vline 
WA_QAPP_D01_STR-TPLNR sy-vline 
WA_QAPP_D01_STR-PHYNR sy-vline 
WA_QAPP_D01_STR-USERC1 sy-vline 
WA_QAPP_D01_STR-USERC2 sy-vline 
WA_QAPP_D01_STR-USERN1 sy-vline 
WA_QAPP_D01_STR-USERN2 sy-vline 
WA_QAPP_D01_STR-USERD1 sy-vline 
WA_QAPP_D01_STR-USERT1 sy-vline 
WA_QAPP_D01_STR-TXTPPBEW sy-vline 
WA_QAPP_D01_STR-PRUEFER sy-vline 
WA_QAPP_D01_STR-ERSTELDAT sy-vline 
WA_QAPP_D01_STR-AENDERER sy-vline 
WA_QAPP_D01_STR-AENDERDAT sy-vline 
WA_QAPP_D01_STR-AENDERZEIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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