ABAP Select data from SAP table PRU_PKMN_PACKAGE_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PRU_PKMN_PACKAGE_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 PRU_PKMN_PACKAGE_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 PRU_PKMN_PACKAGE_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_PRU_PKMN_PACKAGE_ALV TYPE STANDARD TABLE OF PRU_PKMN_PACKAGE_ALV,
      WA_PRU_PKMN_PACKAGE_ALV TYPE PRU_PKMN_PACKAGE_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: <PRU_PKMN_PACKAGE_ALV> TYPE PRU_PKMN_PACKAGE_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRU_PKMN_PACKAGE_ALV
*  INTO TABLE @DATA(IT_PRU_PKMN_PACKAGE_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_PRU_PKMN_PACKAGE_ALV INDEX 1 INTO DATA(WA_PRU_PKMN_PACKAGE_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRU_PKMN_PACKAGE_ALV>-NODEKEY = 1.
<PRU_PKMN_PACKAGE_ALV>-REGNO = 1.
<PRU_PKMN_PACKAGE_ALV>-PACKAGE_ID = 1.
<PRU_PKMN_PACKAGE_ALV>-BEGDA = 1.
<PRU_PKMN_PACKAGE_ALV>-ENDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRU_PKMN_PACKAGE_ALV-FORM_TYPE, sy-vline,
  WA_PRU_PKMN_PACKAGE_ALV-STATUS, sy-vline,
  WA_PRU_PKMN_PACKAGE_ALV-CORRECTION_TYPE, sy-vline,
  WA_PRU_PKMN_PACKAGE_ALV-TERCOND_CODE, sy-vline,
  WA_PRU_PKMN_PACKAGE_ALV-PRIGTH, sy-vline,
  WA_PRU_PKMN_PACKAGE_ALV-CATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRU_PKMN_PACKAGE_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_PRU_PKMN_PACKAGE_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_PRU_PKMN_PACKAGE_ALV INTO WA_PRU_PKMN_PACKAGE_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PRU_PKMN_PACKAGE_ALV_STR, 
NODEKEY TYPE STRING,
REGNO TYPE STRING,
PACKAGE_ID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FORM_TYPE TYPE STRING,
STATUS TYPE STRING,
CORRECTION_TYPE TYPE STRING,
TERCOND_CODE TYPE STRING,
PRIGTH TYPE STRING,
CATEGORY TYPE STRING,
NUMPACK TYPE STRING,
CHECKING TYPE STRING,
T_REGNO TYPE STRING,
T_PACKAGE_ID TYPE STRING,
T_FORM_TYPE TYPE STRING,
T_STATUS TYPE STRING,
T_CORRECTION_TYPE TYPE STRING,
T_TERCOND_CODE TYPE STRING,
T_PRIGTH TYPE STRING,
T_CATEGORY TYPE STRING,
T_CHECKING TYPE STRING,
X_VALUE TYPE STRING,
I_REGNO TYPE STRING,
I_PACKAGE_ID TYPE STRING,
I_NUMPACK TYPE STRING,
I_FORM_TYPE TYPE STRING,
I_STATUS TYPE STRING,
I_CORRECTION_TYPE TYPE STRING,
I_PRIGTH TYPE STRING,
I_CHECKING TYPE STRING,
CLASS TYPE STRING,
OBJID TYPE STRING,
CONTENT TYPE STRING,
NUMBERING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRU_PKMN_PACKAGE_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_PRU_PKMN_PACKAGE_ALV_STR-NODEKEY sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-REGNO sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-PACKAGE_ID sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-BEGDA sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-ENDDA sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-FORM_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-STATUS sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-CORRECTION_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-TERCOND_CODE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-PRIGTH sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-CATEGORY sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-NUMPACK sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-CHECKING sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_REGNO sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_PACKAGE_ID sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_FORM_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_STATUS sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_CORRECTION_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_TERCOND_CODE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_PRIGTH sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_CATEGORY sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-T_CHECKING sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-X_VALUE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_REGNO sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_PACKAGE_ID sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_NUMPACK sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_FORM_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_STATUS sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_CORRECTION_TYPE sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_PRIGTH sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-I_CHECKING sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-CLASS sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-OBJID sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-CONTENT sy-vline 
WA_PRU_PKMN_PACKAGE_ALV_STR-NUMBERING sy-vline      INTO ld_text SEPARATED BY SPACE.

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