ABAP Select data from SAP table PRU_RSV1_T64 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PRU_RSV1_T64 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_RSV1_T64. 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_RSV1_T64 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_RSV1_T64 TYPE STANDARD TABLE OF PRU_RSV1_T64,
      WA_PRU_RSV1_T64 TYPE PRU_RSV1_T64,
      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_RSV1_T64> TYPE PRU_RSV1_T64.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PRU_RSV1_T64.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PRU_RSV1_T64
  INTO TABLE IT_PRU_RSV1_T64.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRU_RSV1_T64
*  INTO TABLE @DATA(IT_PRU_RSV1_T642).
*--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_RSV1_T64 INDEX 1 INTO DATA(WA_PRU_RSV1_T642).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PRU_RSV1_T64 ASSIGNING <PRU_RSV1_T64>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRU_RSV1_T64>-KATEG = 1.
<PRU_RSV1_T64>-T6002 = 1.
<PRU_RSV1_T64>-LINNO = 1.
<PRU_RSV1_T64>-T6004 = 1.
<PRU_RSV1_T64>-T6005 = 1.

ENDLOOP.

LOOP AT IT_PRU_RSV1_T64 INTO WA_PRU_RSV1_T64.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRU_RSV1_T64-T6006, sy-vline,
  WA_PRU_RSV1_T64-T6007, sy-vline,
  WA_PRU_RSV1_T64-T6012, sy-vline,
  WA_PRU_RSV1_T64-T6013, sy-vline,
  WA_PRU_RSV1_T64-T6014, sy-vline,
  WA_PRU_RSV1_T64-T6015, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRU_RSV1_T64 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_RSV1_T64 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_RSV1_T64 INTO WA_PRU_RSV1_T64.


*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_RSV1_T64_STR, 
KATEG TYPE STRING,
T6002 TYPE STRING,
LINNO TYPE STRING,
T6004 TYPE STRING,
T6005 TYPE STRING,
T6006 TYPE STRING,
T6007 TYPE STRING,
T6012 TYPE STRING,
T6013 TYPE STRING,
T6014 TYPE STRING,
T6015 TYPE STRING,
T6016 TYPE STRING,
T6017 TYPE STRING,
T6022 TYPE STRING,
T6023 TYPE STRING,
T6024 TYPE STRING,
T6025 TYPE STRING,
T6026 TYPE STRING,
T6027 TYPE STRING,
T6032 TYPE STRING,
T6033 TYPE STRING,
T6034 TYPE STRING,
T6035 TYPE STRING,
T6036 TYPE STRING,
T6037 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRU_RSV1_T64_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_RSV1_T64_STR-KATEG sy-vline 
WA_PRU_RSV1_T64_STR-T6002 sy-vline 
WA_PRU_RSV1_T64_STR-LINNO sy-vline 
WA_PRU_RSV1_T64_STR-T6004 sy-vline 
WA_PRU_RSV1_T64_STR-T6005 sy-vline 
WA_PRU_RSV1_T64_STR-T6006 sy-vline 
WA_PRU_RSV1_T64_STR-T6007 sy-vline 
WA_PRU_RSV1_T64_STR-T6012 sy-vline 
WA_PRU_RSV1_T64_STR-T6013 sy-vline 
WA_PRU_RSV1_T64_STR-T6014 sy-vline 
WA_PRU_RSV1_T64_STR-T6015 sy-vline 
WA_PRU_RSV1_T64_STR-T6016 sy-vline 
WA_PRU_RSV1_T64_STR-T6017 sy-vline 
WA_PRU_RSV1_T64_STR-T6022 sy-vline 
WA_PRU_RSV1_T64_STR-T6023 sy-vline 
WA_PRU_RSV1_T64_STR-T6024 sy-vline 
WA_PRU_RSV1_T64_STR-T6025 sy-vline 
WA_PRU_RSV1_T64_STR-T6026 sy-vline 
WA_PRU_RSV1_T64_STR-T6027 sy-vline 
WA_PRU_RSV1_T64_STR-T6032 sy-vline 
WA_PRU_RSV1_T64_STR-T6033 sy-vline 
WA_PRU_RSV1_T64_STR-T6034 sy-vline 
WA_PRU_RSV1_T64_STR-T6035 sy-vline 
WA_PRU_RSV1_T64_STR-T6036 sy-vline 
WA_PRU_RSV1_T64_STR-T6037 sy-vline      INTO ld_text SEPARATED BY SPACE.

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