ABAP Select data from SAP table FLD_S_ELEMENTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FLD_S_ELEMENTS
*  INTO TABLE @DATA(IT_FLD_S_ELEMENTS2).
*--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_FLD_S_ELEMENTS INDEX 1 INTO DATA(WA_FLD_S_ELEMENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FLD_S_ELEMENTS>-SON_MUL = 1.
<FLD_S_ELEMENTS>-SONID = 1.
<FLD_S_ELEMENTS>-AUST_IND = 1.
<FLD_S_ELEMENTS>-ATMID = 1.
<FLD_S_ELEMENTS>-PROCUR_METD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FLD_S_ELEMENTS-CPR_JUSTIF, sy-vline,
  WA_FLD_S_ELEMENTS-UNSPSC_CODE, sy-vline,
  WA_FLD_S_ELEMENTS-CTR_DESC, sy-vline,
  WA_FLD_S_ELEMENTS-PUB_AUST, sy-vline,
  WA_FLD_S_ELEMENTS-PUB_BLK_REASON, sy-vline,
  WA_FLD_S_ELEMENTS-PUB_BLK_JUSTF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FLD_S_ELEMENTS 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_FLD_S_ELEMENTS 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_FLD_S_ELEMENTS INTO WA_FLD_S_ELEMENTS.


*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 GL_ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FLD_S_ELEMENTS-GL_ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FLD_S_ELEMENTS-GL_ACCOUNT.
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_FLD_S_ELEMENTS_STR, 
SON_MUL TYPE STRING,
SONID TYPE STRING,
AUST_IND TYPE STRING,
ATMID TYPE STRING,
PROCUR_METD TYPE STRING,
CPR_JUSTIF TYPE STRING,
UNSPSC_CODE TYPE STRING,
CTR_DESC TYPE STRING,
PUB_AUST TYPE STRING,
PUB_BLK_REASON TYPE STRING,
PUB_BLK_JUSTF TYPE STRING,
CONSULT_SERV_IND TYPE STRING,
JUSTIF_CONSULT TYPE STRING,
CONSULT_OTH_DESC TYPE STRING,
CONF_PROV_IND TYPE STRING,
CONFID_IND TYPE STRING,
CONFID_REASON TYPE STRING,
CONFID_TXT TYPE STRING,
CONFID_OP_IND TYPE STRING,
CONFID_OP_REASON TYPE STRING,
CONFID_OP_TXT TYPE STRING,
CONTACT_CODE TYPE STRING,
OFFICE_PCODE TYPE STRING,
MATERIAL_GROUP TYPE STRING,
GL_ACCOUNT TYPE STRING,
CN_IDENTIFCTN TYPE STRING,
PRF_CTR_START_DT TYPE STRING,
PRF_CTR_END_DT TYPE STRING,
LTR_EXEMPT_IND TYPE STRING,
LTR_EXEMPT_CODE TYPE STRING,
LTR_COND_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FLD_S_ELEMENTS_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_FLD_S_ELEMENTS_STR-SON_MUL sy-vline 
WA_FLD_S_ELEMENTS_STR-SONID sy-vline 
WA_FLD_S_ELEMENTS_STR-AUST_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-ATMID sy-vline 
WA_FLD_S_ELEMENTS_STR-PROCUR_METD sy-vline 
WA_FLD_S_ELEMENTS_STR-CPR_JUSTIF sy-vline 
WA_FLD_S_ELEMENTS_STR-UNSPSC_CODE sy-vline 
WA_FLD_S_ELEMENTS_STR-CTR_DESC sy-vline 
WA_FLD_S_ELEMENTS_STR-PUB_AUST sy-vline 
WA_FLD_S_ELEMENTS_STR-PUB_BLK_REASON sy-vline 
WA_FLD_S_ELEMENTS_STR-PUB_BLK_JUSTF sy-vline 
WA_FLD_S_ELEMENTS_STR-CONSULT_SERV_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-JUSTIF_CONSULT sy-vline 
WA_FLD_S_ELEMENTS_STR-CONSULT_OTH_DESC sy-vline 
WA_FLD_S_ELEMENTS_STR-CONF_PROV_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_REASON sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_TXT sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_OP_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_OP_REASON sy-vline 
WA_FLD_S_ELEMENTS_STR-CONFID_OP_TXT sy-vline 
WA_FLD_S_ELEMENTS_STR-CONTACT_CODE sy-vline 
WA_FLD_S_ELEMENTS_STR-OFFICE_PCODE sy-vline 
WA_FLD_S_ELEMENTS_STR-MATERIAL_GROUP sy-vline 
WA_FLD_S_ELEMENTS_STR-GL_ACCOUNT sy-vline 
WA_FLD_S_ELEMENTS_STR-CN_IDENTIFCTN sy-vline 
WA_FLD_S_ELEMENTS_STR-PRF_CTR_START_DT sy-vline 
WA_FLD_S_ELEMENTS_STR-PRF_CTR_END_DT sy-vline 
WA_FLD_S_ELEMENTS_STR-LTR_EXEMPT_IND sy-vline 
WA_FLD_S_ELEMENTS_STR-LTR_EXEMPT_CODE sy-vline 
WA_FLD_S_ELEMENTS_STR-LTR_COND_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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