ABAP Select data from SAP table QV052 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QV052 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 QV052. 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 QV052 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_QV052 TYPE STANDARD TABLE OF QV052,
      WA_QV052 TYPE QV052,
      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: <QV052> TYPE QV052.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QV052.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QV052
  INTO TABLE IT_QV052.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QV052
*  INTO TABLE @DATA(IT_QV0522).
*--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_QV052 INDEX 1 INTO DATA(WA_QV0522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QV052 ASSIGNING <QV052>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QV052>-ANSAL = 1.
<QV052>-PDSAL = 1.
<QV052>-SUMPB = 1.
<QV052>-SUMPP = 1.
<QV052>-MTHLY = 1.

ENDLOOP.

LOOP AT IT_QV052 INTO WA_QV052.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QV052-SMTHY, sy-vline,
  WA_QV052-BWKLY, sy-vline,
  WA_QV052-WEKLY, sy-vline,
  WA_QV052-HOURY, sy-vline,
  WA_QV052-NUPAY, sy-vline,
  WA_QV052-EHEGT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QV052 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_QV052 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_QV052 INTO WA_QV052.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_QV052_STR, 
ANSAL TYPE STRING,
PDSAL TYPE STRING,
SUMPB TYPE STRING,
SUMPP TYPE STRING,
MTHLY TYPE STRING,
SMTHY TYPE STRING,
BWKLY TYPE STRING,
WEKLY TYPE STRING,
HOURY TYPE STRING,
NUPAY TYPE STRING,
EHEGT TYPE STRING,
ORTZK TYPE STRING,
ANZKD TYPE STRING,
HEAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QV052_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_QV052_STR-ANSAL sy-vline 
WA_QV052_STR-PDSAL sy-vline 
WA_QV052_STR-SUMPB sy-vline 
WA_QV052_STR-SUMPP sy-vline 
WA_QV052_STR-MTHLY sy-vline 
WA_QV052_STR-SMTHY sy-vline 
WA_QV052_STR-BWKLY sy-vline 
WA_QV052_STR-WEKLY sy-vline 
WA_QV052_STR-HOURY sy-vline 
WA_QV052_STR-NUPAY sy-vline 
WA_QV052_STR-EHEGT sy-vline 
WA_QV052_STR-ORTZK sy-vline 
WA_QV052_STR-ANZKD sy-vline 
WA_QV052_STR-HEAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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