ABAP Select data from SAP table PQA_HQAPABV0_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PQA_HQAPABV0_ALV 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 PQA_HQAPABV0_ALV. 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 PQA_HQAPABV0_ALV 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_PQA_HQAPABV0_ALV TYPE STANDARD TABLE OF PQA_HQAPABV0_ALV,
      WA_PQA_HQAPABV0_ALV TYPE PQA_HQAPABV0_ALV,
      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: <PQA_HQAPABV0_ALV> TYPE PQA_HQAPABV0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PQA_HQAPABV0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PQA_HQAPABV0_ALV
  INTO TABLE IT_PQA_HQAPABV0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PQA_HQAPABV0_ALV
*  INTO TABLE @DATA(IT_PQA_HQAPABV0_ALV2).
*--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_PQA_HQAPABV0_ALV INDEX 1 INTO DATA(WA_PQA_HQAPABV0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PQA_HQAPABV0_ALV ASSIGNING <PQA_HQAPABV0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PQA_HQAPABV0_ALV>-PERNR = 1.
<PQA_HQAPABV0_ALV>-FNAME = 1.
<PQA_HQAPABV0_ALV>-ARFNM = 1.
<PQA_HQAPABV0_ALV>-ARSNM = 1.
<PQA_HQAPABV0_ALV>-ARTNM = 1.

ENDLOOP.

LOOP AT IT_PQA_HQAPABV0_ALV INTO WA_PQA_HQAPABV0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PQA_HQAPABV0_ALV-ARLNM, sy-vline,
  WA_PQA_HQAPABV0_ALV-VORNA, sy-vline,
  WA_PQA_HQAPABV0_ALV-NACH2, sy-vline,
  WA_PQA_HQAPABV0_ALV-MIDNM, sy-vline,
  WA_PQA_HQAPABV0_ALV-NACHN, sy-vline,
  WA_PQA_HQAPABV0_ALV-GENDR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PQA_HQAPABV0_ALV 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_PQA_HQAPABV0_ALV 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_PQA_HQAPABV0_ALV INTO WA_PQA_HQAPABV0_ALV.


*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 PDATE, internal->external for field BIRDT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PQA_HQAPABV0_ALV-BIRDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PQA_HQAPABV0_ALV-BIRDT.
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_PQA_HQAPABV0_ALV_STR, 
PERNR TYPE STRING,
FNAME TYPE STRING,
ARFNM TYPE STRING,
ARSNM TYPE STRING,
ARTNM TYPE STRING,
ARLNM TYPE STRING,
VORNA TYPE STRING,
NACH2 TYPE STRING,
MIDNM TYPE STRING,
NACHN TYPE STRING,
GENDR TYPE STRING,
NATIO TYPE STRING,
PASNO TYPE STRING,
PASEX TYPE STRING,
BIRDT TYPE STRING,
JOB TYPE STRING,
EDUQU TYPE STRING,
COMNO TYPE STRING,
COMNM TYPE STRING,
PROID TYPE STRING,
PRONA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PQA_HQAPABV0_ALV_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_PQA_HQAPABV0_ALV_STR-PERNR sy-vline 
WA_PQA_HQAPABV0_ALV_STR-FNAME sy-vline 
WA_PQA_HQAPABV0_ALV_STR-ARFNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-ARSNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-ARTNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-ARLNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-VORNA sy-vline 
WA_PQA_HQAPABV0_ALV_STR-NACH2 sy-vline 
WA_PQA_HQAPABV0_ALV_STR-MIDNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-NACHN sy-vline 
WA_PQA_HQAPABV0_ALV_STR-GENDR sy-vline 
WA_PQA_HQAPABV0_ALV_STR-NATIO sy-vline 
WA_PQA_HQAPABV0_ALV_STR-PASNO sy-vline 
WA_PQA_HQAPABV0_ALV_STR-PASEX sy-vline 
WA_PQA_HQAPABV0_ALV_STR-BIRDT sy-vline 
WA_PQA_HQAPABV0_ALV_STR-JOB sy-vline 
WA_PQA_HQAPABV0_ALV_STR-EDUQU sy-vline 
WA_PQA_HQAPABV0_ALV_STR-COMNO sy-vline 
WA_PQA_HQAPABV0_ALV_STR-COMNM sy-vline 
WA_PQA_HQAPABV0_ALV_STR-PROID sy-vline 
WA_PQA_HQAPABV0_ALV_STR-PRONA sy-vline      INTO ld_text SEPARATED BY SPACE.

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