ABAP Select data from SAP table RJJPACKAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJJPACKAGE
*  INTO TABLE @DATA(IT_RJJPACKAGE2).
*--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_RJJPACKAGE INDEX 1 INTO DATA(WA_RJJPACKAGE2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJJPACKAGE-PACKAGE_CATEGORY, sy-vline,
  WA_RJJPACKAGE-PACKAGE_NAME, sy-vline,
  WA_RJJPACKAGE-RELEASED, sy-vline,
  WA_RJJPACKAGE-VALID_FROM, sy-vline,
  WA_RJJPACKAGE-VALID_TO, sy-vline,
  WA_RJJPACKAGE-USED_IN_ORDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJJPACKAGE 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_RJJPACKAGE 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_RJJPACKAGE INTO WA_RJJPACKAGE.


*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_RJJPACKAGE-PACKAGE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJJPACKAGE-PACKAGE_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RJJPACKAGE-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJJPACKAGE-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PACKAGE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJJPACKAGE-PACKAGE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJJPACKAGE-PACKAGE_ID.
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_RJJPACKAGE_STR, 
PACKAGE_ID TYPE STRING,
PK_DATA TYPE STRING,
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,
PK_TEXT TYPE STRING,
MANDT TYPE STRING,
SPRAS TYPE STRING,
PACKAGE_ID TYPE STRING,
PK_SALES_INFO TYPE STRING,
PK_SALES_ASSIST TYPE STRING,
PK_SA TYPE STRING,
PK_ELEMENT TYPE STRING,
PK_ELE_A TYPE STRING,
PK_ELE_S TYPE STRING,
PK_ELE_O TYPE STRING,
PK_ELE_W TYPE STRING,
PK_ELE_V TYPE STRING,
PK_ELE_D TYPE STRING,
PK_ADM_A TYPE STRING,
PK_ADM_S TYPE STRING,
PK_ADM_O TYPE STRING,
PK_ADM_W TYPE STRING,
PK_ADM_V TYPE STRING,
PK_ADM_D TYPE STRING,
PK_UPS_DEF TYPE STRING,
PK_UPS_A TYPE STRING,
PK_UPS_S TYPE STRING,
PK_UPS_O TYPE STRING,
PK_UPS_W TYPE STRING,
PK_UPS_V TYPE STRING,
PK_UPS_D TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJJPACKAGE_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_RJJPACKAGE_STR-PACKAGE_ID sy-vline 
WA_RJJPACKAGE_STR-PK_DATA sy-vline 
WA_RJJPACKAGE_STR-MANDT sy-vline 
WA_RJJPACKAGE_STR-PACKAGE_ID sy-vline 
WA_RJJPACKAGE_STR-PACKAGE_TYPE sy-vline 
WA_RJJPACKAGE_STR-PACKAGE_CATEGORY sy-vline 
WA_RJJPACKAGE_STR-PACKAGE_NAME sy-vline 
WA_RJJPACKAGE_STR-RELEASED sy-vline 
WA_RJJPACKAGE_STR-VALID_FROM sy-vline 
WA_RJJPACKAGE_STR-VALID_TO sy-vline 
WA_RJJPACKAGE_STR-USED_IN_ORDER sy-vline 
WA_RJJPACKAGE_STR-PK_CHECK_TYPE sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_01 sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_02 sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_03 sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_04 sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_05 sy-vline 
WA_RJJPACKAGE_STR-FLEX_PK_ELEM_06 sy-vline 
WA_RJJPACKAGE_STR-ERFUSER sy-vline 
WA_RJJPACKAGE_STR-ERFDATE sy-vline 
WA_RJJPACKAGE_STR-ERFTIME sy-vline 
WA_RJJPACKAGE_STR-AENUSER sy-vline 
WA_RJJPACKAGE_STR-AENDATE sy-vline 
WA_RJJPACKAGE_STR-AENTIME sy-vline 
WA_RJJPACKAGE_STR-TIMESTMP_CRDAT sy-vline 
WA_RJJPACKAGE_STR-TIMESTMP_CHGAT sy-vline 
WA_RJJPACKAGE_STR-PK_TEXT sy-vline 
WA_RJJPACKAGE_STR-MANDT sy-vline 
WA_RJJPACKAGE_STR-SPRAS sy-vline 
WA_RJJPACKAGE_STR-PACKAGE_ID sy-vline 
WA_RJJPACKAGE_STR-PK_SALES_INFO sy-vline 
WA_RJJPACKAGE_STR-PK_SALES_ASSIST sy-vline 
WA_RJJPACKAGE_STR-PK_SA sy-vline 
WA_RJJPACKAGE_STR-PK_ELEMENT sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_A sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_S sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_O sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_W sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_V sy-vline 
WA_RJJPACKAGE_STR-PK_ELE_D sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_A sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_S sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_O sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_W sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_V sy-vline 
WA_RJJPACKAGE_STR-PK_ADM_D sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_DEF sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_A sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_S sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_O sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_W sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_V sy-vline 
WA_RJJPACKAGE_STR-PK_UPS_D sy-vline      INTO ld_text SEPARATED BY SPACE.

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