ABAP Select data from SAP table EHFNDV_REQ_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDV_REQ_INPUT
*  INTO TABLE @DATA(IT_EHFNDV_REQ_INPUT2).
*--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_EHFNDV_REQ_INPUT INDEX 1 INTO DATA(WA_EHFNDV_REQ_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDV_REQ_INPUT>-REQ_ROOT_KEY = 1.
<EHFNDV_REQ_INPUT>-REQ_MIGRATION_SRC = 1.
<EHFNDV_REQ_INPUT>-REQ_STR_KEY = 1.
<EHFNDV_REQ_INPUT>-REQ_STR_PARAGRAPH_INDEX = 1.
<EHFNDV_REQ_INPUT>-REQ_STR_PARAGRAPH_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDV_REQ_INPUT-REQ_STR_PARAGRAPH, sy-vline,
  WA_EHFNDV_REQ_INPUT-REQ_STR_PARENT_REF_KEY, sy-vline,
  WA_EHFNDV_REQ_INPUT-REQ_STR_ATF_KEY_REF, sy-vline,
  WA_EHFNDV_REQ_INPUT-REQ_STR_EXTERNAL_KEY, sy-vline,
  WA_EHFNDV_REQ_INPUT-REQ_STR_OBJECT_KEY, sy-vline,
  WA_EHFNDV_REQ_INPUT-REQ_EQUATION_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDV_REQ_INPUT 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_EHFNDV_REQ_INPUT 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_EHFNDV_REQ_INPUT INTO WA_EHFNDV_REQ_INPUT.


*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 DFVAL, internal->external for field USAGE_PERIOD
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-USAGE_PERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-USAGE_PERIOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field SUBJECT_TYPE_CODE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-SUBJECT_TYPE_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-SUBJECT_TYPE_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SBJKY, internal->external for field SUBJECT_ROOT_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_SBJKY_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-SUBJECT_ROOT_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-SUBJECT_ROOT_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHUNI, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_EHUNI_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHPRO, internal->external for field CHEM_PROPERTY
CALL FUNCTION 'CONVERSION_EXIT_CHPRO_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-CHEM_PROPERTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-CHEM_PROPERTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field DATA_SOURCE_TYPE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-DATA_SOURCE_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-DATA_SOURCE_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DIM, internal->external for field DIMENSION
CALL FUNCTION 'CONVERSION_EXIT_DIM_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_INPUT-DIMENSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_INPUT-DIMENSION.
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_EHFNDV_REQ_INPUT_STR, 
REQ_ROOT_KEY TYPE STRING,
REQ_MIGRATION_SRC TYPE STRING,
REQ_STR_KEY TYPE STRING,
REQ_STR_PARAGRAPH_INDEX TYPE STRING,
REQ_STR_PARAGRAPH_ID TYPE STRING,
REQ_STR_PARAGRAPH TYPE STRING,
REQ_STR_PARENT_REF_KEY TYPE STRING,
REQ_STR_ATF_KEY_REF TYPE STRING,
REQ_STR_EXTERNAL_KEY TYPE STRING,
REQ_STR_OBJECT_KEY TYPE STRING,
REQ_EQUATION_KEY TYPE STRING,
REQ_EQUATION_NAME TYPE STRING,
REQ_INPUT_KEY TYPE STRING,
NAME TYPE STRING,
DESCRIPTION TYPE STRING,
USAGE_PERIOD TYPE STRING,
SUBJECT_TYPE_CODE TYPE STRING,
SUBJECT_ROOT_KEY_REF TYPE STRING,
UNIT TYPE STRING,
CHEM_PROPERTY TYPE STRING,
DATA_SOURCE_TYPE TYPE STRING,
DIMENSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDV_REQ_INPUT_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_EHFNDV_REQ_INPUT_STR-REQ_ROOT_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_MIGRATION_SRC sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_PARAGRAPH_INDEX sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_PARAGRAPH_ID sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_PARAGRAPH sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_PARENT_REF_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_ATF_KEY_REF sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_EXTERNAL_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_STR_OBJECT_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_EQUATION_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_EQUATION_NAME sy-vline 
WA_EHFNDV_REQ_INPUT_STR-REQ_INPUT_KEY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-NAME sy-vline 
WA_EHFNDV_REQ_INPUT_STR-DESCRIPTION sy-vline 
WA_EHFNDV_REQ_INPUT_STR-USAGE_PERIOD sy-vline 
WA_EHFNDV_REQ_INPUT_STR-SUBJECT_TYPE_CODE sy-vline 
WA_EHFNDV_REQ_INPUT_STR-SUBJECT_ROOT_KEY_REF sy-vline 
WA_EHFNDV_REQ_INPUT_STR-UNIT sy-vline 
WA_EHFNDV_REQ_INPUT_STR-CHEM_PROPERTY sy-vline 
WA_EHFNDV_REQ_INPUT_STR-DATA_SOURCE_TYPE sy-vline 
WA_EHFNDV_REQ_INPUT_STR-DIMENSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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