ABAP Select data from SAP table GPRVAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GPRVAL
*  INTO TABLE @DATA(IT_GPRVAL2).
*--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_GPRVAL INDEX 1 INTO DATA(WA_GPRVAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GPRVAL>-ROWTXT = 1.
<GPRVAL>-VAL1 = 1.
<GPRVAL>-VAL2 = 1.
<GPRVAL>-VAL3 = 1.
<GPRVAL>-VAL4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GPRVAL-VAL5, sy-vline,
  WA_GPRVAL-VAL6, sy-vline,
  WA_GPRVAL-VAL7, sy-vline,
  WA_GPRVAL-VAL8, sy-vline,
  WA_GPRVAL-VAL9, sy-vline,
  WA_GPRVAL-VAL10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GPRVAL 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_GPRVAL 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_GPRVAL INTO WA_GPRVAL.


*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_GPRVAL_STR, 
ROWTXT TYPE STRING,
VAL1 TYPE STRING,
VAL2 TYPE STRING,
VAL3 TYPE STRING,
VAL4 TYPE STRING,
VAL5 TYPE STRING,
VAL6 TYPE STRING,
VAL7 TYPE STRING,
VAL8 TYPE STRING,
VAL9 TYPE STRING,
VAL10 TYPE STRING,
VAL11 TYPE STRING,
VAL12 TYPE STRING,
VAL13 TYPE STRING,
VAL14 TYPE STRING,
VAL15 TYPE STRING,
VAL16 TYPE STRING,
VAL17 TYPE STRING,
VAL18 TYPE STRING,
VAL19 TYPE STRING,
VAL20 TYPE STRING,
VAL21 TYPE STRING,
VAL22 TYPE STRING,
VAL23 TYPE STRING,
VAL24 TYPE STRING,
VAL25 TYPE STRING,
VAL26 TYPE STRING,
VAL27 TYPE STRING,
VAL28 TYPE STRING,
VAL29 TYPE STRING,
VAL30 TYPE STRING,
VAL31 TYPE STRING,
VAL32 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GPRVAL_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_GPRVAL_STR-ROWTXT sy-vline 
WA_GPRVAL_STR-VAL1 sy-vline 
WA_GPRVAL_STR-VAL2 sy-vline 
WA_GPRVAL_STR-VAL3 sy-vline 
WA_GPRVAL_STR-VAL4 sy-vline 
WA_GPRVAL_STR-VAL5 sy-vline 
WA_GPRVAL_STR-VAL6 sy-vline 
WA_GPRVAL_STR-VAL7 sy-vline 
WA_GPRVAL_STR-VAL8 sy-vline 
WA_GPRVAL_STR-VAL9 sy-vline 
WA_GPRVAL_STR-VAL10 sy-vline 
WA_GPRVAL_STR-VAL11 sy-vline 
WA_GPRVAL_STR-VAL12 sy-vline 
WA_GPRVAL_STR-VAL13 sy-vline 
WA_GPRVAL_STR-VAL14 sy-vline 
WA_GPRVAL_STR-VAL15 sy-vline 
WA_GPRVAL_STR-VAL16 sy-vline 
WA_GPRVAL_STR-VAL17 sy-vline 
WA_GPRVAL_STR-VAL18 sy-vline 
WA_GPRVAL_STR-VAL19 sy-vline 
WA_GPRVAL_STR-VAL20 sy-vline 
WA_GPRVAL_STR-VAL21 sy-vline 
WA_GPRVAL_STR-VAL22 sy-vline 
WA_GPRVAL_STR-VAL23 sy-vline 
WA_GPRVAL_STR-VAL24 sy-vline 
WA_GPRVAL_STR-VAL25 sy-vline 
WA_GPRVAL_STR-VAL26 sy-vline 
WA_GPRVAL_STR-VAL27 sy-vline 
WA_GPRVAL_STR-VAL28 sy-vline 
WA_GPRVAL_STR-VAL29 sy-vline 
WA_GPRVAL_STR-VAL30 sy-vline 
WA_GPRVAL_STR-VAL31 sy-vline 
WA_GPRVAL_STR-VAL32 sy-vline      INTO ld_text SEPARATED BY SPACE.

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