ABAP Select data from SAP table RJJPKDATADB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJJPKDATADB
*  INTO TABLE @DATA(IT_RJJPKDATADB2).
*--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_RJJPKDATADB INDEX 1 INTO DATA(WA_RJJPKDATADB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJJPKDATADB>-MANDT = 1.
<RJJPKDATADB>-PACKAGE_ID = 1.
<RJJPKDATADB>-PACKAGE_TYPE = 1.
<RJJPKDATADB>-PACKAGE_CATEGORY = 1.
<RJJPKDATADB>-PACKAGE_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJJPKDATADB-RELEASED, sy-vline,
  WA_RJJPKDATADB-VALID_FROM, sy-vline,
  WA_RJJPKDATADB-VALID_TO, sy-vline,
  WA_RJJPKDATADB-USED_IN_ORDER, sy-vline,
  WA_RJJPKDATADB-PK_CHECK_TYPE, sy-vline,
  WA_RJJPKDATADB-FLEX_PK_ELEM_01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJJPKDATADB 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_RJJPKDATADB 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_RJJPKDATADB INTO WA_RJJPKDATADB.


*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 ALPHA, internal->external for field PACKAGE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJJPKDATADB-PACKAGE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJJPKDATADB-PACKAGE_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PACKAGE_CATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJJPKDATADB-PACKAGE_CATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJJPKDATADB-PACKAGE_CATEGORY.
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_RJJPKDATADB_STR, 
MANDT TYPE STRING,
PACKAGE_ID TYPE STRING,
PACKAGE_TYPE TYPE STRING,
PACKAGE_CATEGORY TYPE STRING,
PACKAGE_NAME TYPE STRING,
RELEASED TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
USED_IN_ORDER TYPE STRING,
PK_CHECK_TYPE TYPE STRING,
FLEX_PK_ELEM_01 TYPE STRING,
FLEX_PK_ELEM_02 TYPE STRING,
FLEX_PK_ELEM_03 TYPE STRING,
FLEX_PK_ELEM_04 TYPE STRING,
FLEX_PK_ELEM_05 TYPE STRING,
FLEX_PK_ELEM_06 TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,
TIMESTMP_CRDAT TYPE STRING,
TIMESTMP_CHGAT TYPE STRING,
DBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJJPKDATADB_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_RJJPKDATADB_STR-MANDT sy-vline 
WA_RJJPKDATADB_STR-PACKAGE_ID sy-vline 
WA_RJJPKDATADB_STR-PACKAGE_TYPE sy-vline 
WA_RJJPKDATADB_STR-PACKAGE_CATEGORY sy-vline 
WA_RJJPKDATADB_STR-PACKAGE_NAME sy-vline 
WA_RJJPKDATADB_STR-RELEASED sy-vline 
WA_RJJPKDATADB_STR-VALID_FROM sy-vline 
WA_RJJPKDATADB_STR-VALID_TO sy-vline 
WA_RJJPKDATADB_STR-USED_IN_ORDER sy-vline 
WA_RJJPKDATADB_STR-PK_CHECK_TYPE sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_01 sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_02 sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_03 sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_04 sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_05 sy-vline 
WA_RJJPKDATADB_STR-FLEX_PK_ELEM_06 sy-vline 
WA_RJJPKDATADB_STR-ERFUSER sy-vline 
WA_RJJPKDATADB_STR-ERFDATE sy-vline 
WA_RJJPKDATADB_STR-ERFTIME sy-vline 
WA_RJJPKDATADB_STR-AENUSER sy-vline 
WA_RJJPKDATADB_STR-AENDATE sy-vline 
WA_RJJPKDATADB_STR-AENTIME sy-vline 
WA_RJJPKDATADB_STR-TIMESTMP_CRDAT sy-vline 
WA_RJJPKDATADB_STR-TIMESTMP_CHGAT sy-vline 
WA_RJJPKDATADB_STR-DBCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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