ABAP Select data from SAP table CD0F4TEST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CD0F4TEST 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 CD0F4TEST. 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 CD0F4TEST 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_CD0F4TEST TYPE STANDARD TABLE OF CD0F4TEST,
      WA_CD0F4TEST TYPE CD0F4TEST,
      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: <CD0F4TEST> TYPE CD0F4TEST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CD0F4TEST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CD0F4TEST
  INTO TABLE IT_CD0F4TEST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CD0F4TEST
*  INTO TABLE @DATA(IT_CD0F4TEST2).
*--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_CD0F4TEST INDEX 1 INTO DATA(WA_CD0F4TEST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CD0F4TEST ASSIGNING <CD0F4TEST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CD0F4TEST>-KEYFIELD = 1.
<CD0F4TEST>-SPRAS_ROLL = 1.
<CD0F4TEST>-ROLLNAME1 = 1.
<CD0F4TEST>-DIATYP = 1.
<CD0F4TEST>-TABCLASS = 1.

ENDLOOP.

LOOP AT IT_CD0F4TEST INTO WA_CD0F4TEST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CD0F4TEST-FIXED_VAL, sy-vline,
  WA_CD0F4TEST-FIXED_INT, sy-vline,
  WA_CD0F4TEST-DATUM1, sy-vline,
  WA_CD0F4TEST-TIMS1, sy-vline,
  WA_CD0F4TEST-DATUM2, sy-vline,
  WA_CD0F4TEST-TIMS2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CD0F4TEST 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_CD0F4TEST 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_CD0F4TEST INTO WA_CD0F4TEST.


*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 ISOLA, internal->external for field SPRAS_ROLL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CD0F4TEST-SPRAS_ROLL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD0F4TEST-SPRAS_ROLL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERSNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CD0F4TEST-PERSNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD0F4TEST-PERSNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CD0F4TEST-ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD0F4TEST-ADDRNUMBER.
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_CD0F4TEST_STR, 
KEYFIELD TYPE STRING,
SPRAS_ROLL TYPE STRING,
ROLLNAME1 TYPE STRING,
DIATYP TYPE STRING,
TABCLASS TYPE STRING,
FIXED_VAL TYPE STRING,
FIXED_INT TYPE STRING,
DATUM1 TYPE STRING,
TIMS1 TYPE STRING,
DATUM2 TYPE STRING,
TIMS2 TYPE STRING,
SHLPNAME TYPE STRING,
SHLPFIELD TYPE STRING,
ID TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
PERSNUMBER TYPE STRING,
ADDRNUMBER TYPE STRING,
COMP_PERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CD0F4TEST_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_CD0F4TEST_STR-KEYFIELD sy-vline 
WA_CD0F4TEST_STR-SPRAS_ROLL sy-vline 
WA_CD0F4TEST_STR-ROLLNAME1 sy-vline 
WA_CD0F4TEST_STR-DIATYP sy-vline 
WA_CD0F4TEST_STR-TABCLASS sy-vline 
WA_CD0F4TEST_STR-FIXED_VAL sy-vline 
WA_CD0F4TEST_STR-FIXED_INT sy-vline 
WA_CD0F4TEST_STR-DATUM1 sy-vline 
WA_CD0F4TEST_STR-TIMS1 sy-vline 
WA_CD0F4TEST_STR-DATUM2 sy-vline 
WA_CD0F4TEST_STR-TIMS2 sy-vline 
WA_CD0F4TEST_STR-SHLPNAME sy-vline 
WA_CD0F4TEST_STR-SHLPFIELD sy-vline 
WA_CD0F4TEST_STR-ID sy-vline 
WA_CD0F4TEST_STR-ARBGB sy-vline 
WA_CD0F4TEST_STR-MSGNR sy-vline 
WA_CD0F4TEST_STR-PERSNUMBER sy-vline 
WA_CD0F4TEST_STR-ADDRNUMBER sy-vline 
WA_CD0F4TEST_STR-COMP_PERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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