ABAP Select data from SAP table JVA_INTC_HDR_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVA_INTC_HDR_EXT
*  INTO TABLE @DATA(IT_JVA_INTC_HDR_EXT2).
*--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_JVA_INTC_HDR_EXT INDEX 1 INTO DATA(WA_JVA_INTC_HDR_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVA_INTC_HDR_EXT>-BUKRS = 1.
<JVA_INTC_HDR_EXT>-GROUP_ID = 1.
<JVA_INTC_HDR_EXT>-CYCLE_NO = 1.
<JVA_INTC_HDR_EXT>-CALC_NO = 1.
<JVA_INTC_HDR_EXT>-STATUS_CD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVA_INTC_HDR_EXT-FRYEAR, sy-vline,
  WA_JVA_INTC_HDR_EXT-FRPERIOD, sy-vline,
  WA_JVA_INTC_HDR_EXT-TOYEAR, sy-vline,
  WA_JVA_INTC_HDR_EXT-TOPERIOD, sy-vline,
  WA_JVA_INTC_HDR_EXT-UNAME, sy-vline,
  WA_JVA_INTC_HDR_EXT-TIMESTAMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVA_INTC_HDR_EXT 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_JVA_INTC_HDR_EXT 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_JVA_INTC_HDR_EXT INTO WA_JVA_INTC_HDR_EXT.


*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 GROUP_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVA_INTC_HDR_EXT-GROUP_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_INTC_HDR_EXT-GROUP_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVA_INTC_HDR_EXT-FRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_INTC_HDR_EXT-FRYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVA_INTC_HDR_EXT-TOYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_INTC_HDR_EXT-TOYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVA_INTC_HDR_EXT-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_INTC_HDR_EXT-GJAHR.
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_JVA_INTC_HDR_EXT_STR, 
BUKRS TYPE STRING,
GROUP_ID TYPE STRING,
CYCLE_NO TYPE STRING,
CALC_NO TYPE STRING,
STATUS_CD TYPE STRING,
FRYEAR TYPE STRING,
FRPERIOD TYPE STRING,
TOYEAR TYPE STRING,
TOPERIOD TYPE STRING,
UNAME TYPE STRING,
TIMESTAMP TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
RECID TYPE STRING,
FCURR TYPE STRING,
BAL_OPEN TYPE STRING,
BAL_CLOSE TYPE STRING,
TOT_INTEREST TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
MSG_MAXSEV TYPE STRING,
MSG_ICON TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
STATUS_ICON TYPE STRING,
X_EXP TYPE STRING,
X_SEL TYPE STRING,
GAP1 TYPE STRING,
GAP2 TYPE STRING,
GAP3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVA_INTC_HDR_EXT_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_JVA_INTC_HDR_EXT_STR-BUKRS sy-vline 
WA_JVA_INTC_HDR_EXT_STR-GROUP_ID sy-vline 
WA_JVA_INTC_HDR_EXT_STR-CYCLE_NO sy-vline 
WA_JVA_INTC_HDR_EXT_STR-CALC_NO sy-vline 
WA_JVA_INTC_HDR_EXT_STR-STATUS_CD sy-vline 
WA_JVA_INTC_HDR_EXT_STR-FRYEAR sy-vline 
WA_JVA_INTC_HDR_EXT_STR-FRPERIOD sy-vline 
WA_JVA_INTC_HDR_EXT_STR-TOYEAR sy-vline 
WA_JVA_INTC_HDR_EXT_STR-TOPERIOD sy-vline 
WA_JVA_INTC_HDR_EXT_STR-UNAME sy-vline 
WA_JVA_INTC_HDR_EXT_STR-TIMESTAMP sy-vline 
WA_JVA_INTC_HDR_EXT_STR-VNAME sy-vline 
WA_JVA_INTC_HDR_EXT_STR-EGRUP sy-vline 
WA_JVA_INTC_HDR_EXT_STR-RECID sy-vline 
WA_JVA_INTC_HDR_EXT_STR-FCURR sy-vline 
WA_JVA_INTC_HDR_EXT_STR-BAL_OPEN sy-vline 
WA_JVA_INTC_HDR_EXT_STR-BAL_CLOSE sy-vline 
WA_JVA_INTC_HDR_EXT_STR-TOT_INTEREST sy-vline 
WA_JVA_INTC_HDR_EXT_STR-BELNR sy-vline 
WA_JVA_INTC_HDR_EXT_STR-GJAHR sy-vline 
WA_JVA_INTC_HDR_EXT_STR-MSG_MAXSEV sy-vline 
WA_JVA_INTC_HDR_EXT_STR-MSG_ICON sy-vline 
WA_JVA_INTC_HDR_EXT_STR-STATUS sy-vline 
WA_JVA_INTC_HDR_EXT_STR-STATUS_TEXT sy-vline 
WA_JVA_INTC_HDR_EXT_STR-STATUS_ICON sy-vline 
WA_JVA_INTC_HDR_EXT_STR-X_EXP sy-vline 
WA_JVA_INTC_HDR_EXT_STR-X_SEL sy-vline 
WA_JVA_INTC_HDR_EXT_STR-GAP1 sy-vline 
WA_JVA_INTC_HDR_EXT_STR-GAP2 sy-vline 
WA_JVA_INTC_HDR_EXT_STR-GAP3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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