ABAP Select data from SAP table EEW_OOW_FLD_DEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EEW_OOW_FLD_DEF
*  INTO TABLE @DATA(IT_EEW_OOW_FLD_DEF2).
*--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_EEW_OOW_FLD_DEF INDEX 1 INTO DATA(WA_EEW_OOW_FLD_DEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EEW_OOW_FLD_DEF>-XMARK = 1.
<EEW_OOW_FLD_DEF>-FIELDNAME = 1.
<EEW_OOW_FLD_DEF>-ID_GUID = 1.
<EEW_OOW_FLD_DEF>-ROLLNAME = 1.
<EEW_OOW_FLD_DEF>-XROLLNAME_GEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EEW_OOW_FLD_DEF-TYPE, sy-vline,
  WA_EEW_OOW_FLD_DEF-LENGTH, sy-vline,
  WA_EEW_OOW_FLD_DEF-DESCRIPTION, sy-vline,
  WA_EEW_OOW_FLD_DEF-XKEYFIELD, sy-vline,
  WA_EEW_OOW_FLD_DEF-XCHECKTABLE, sy-vline,
  WA_EEW_OOW_FLD_DEF-CHECKTABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EEW_OOW_FLD_DEF 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_EEW_OOW_FLD_DEF 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_EEW_OOW_FLD_DEF INTO WA_EEW_OOW_FLD_DEF.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EEW_OOW_FLD_DEF_STR, 
XMARK TYPE STRING,
FIELDNAME TYPE STRING,
ID_GUID TYPE STRING,
ROLLNAME TYPE STRING,
XROLLNAME_GEN TYPE STRING,
TYPE TYPE STRING,
LENGTH TYPE STRING,
DESCRIPTION TYPE STRING,
XKEYFIELD TYPE STRING,
XCHECKTABLE TYPE STRING,
CHECKTABLE TYPE STRING,
XCHECKTABLE_GEN TYPE STRING,
REF_TABLE TYPE STRING,
REF_FIELD TYPE STRING,
GRP01 TYPE STRING,
GRP02 TYPE STRING,
GRP03 TYPE STRING,
GRP04 TYPE STRING,
GRP05 TYPE STRING,
GRP06 TYPE STRING,
GRP07 TYPE STRING,
GRP08 TYPE STRING,
GRP09 TYPE STRING,
GRP10 TYPE STRING,
XUSE_DEFAULT_SET TYPE STRING,
XUSE02 TYPE STRING,
XUSE03 TYPE STRING,
XUSE04 TYPE STRING,
XUSE05 TYPE STRING,
XUSE06 TYPE STRING,
XUSE07 TYPE STRING,
XUSE08 TYPE STRING,
XUSE09 TYPE STRING,
XUSE10 TYPE STRING,
DCM_LENGTH TYPE STRING,
XUSE01 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EEW_OOW_FLD_DEF_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_EEW_OOW_FLD_DEF_STR-XMARK sy-vline 
WA_EEW_OOW_FLD_DEF_STR-FIELDNAME sy-vline 
WA_EEW_OOW_FLD_DEF_STR-ID_GUID sy-vline 
WA_EEW_OOW_FLD_DEF_STR-ROLLNAME sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XROLLNAME_GEN sy-vline 
WA_EEW_OOW_FLD_DEF_STR-TYPE sy-vline 
WA_EEW_OOW_FLD_DEF_STR-LENGTH sy-vline 
WA_EEW_OOW_FLD_DEF_STR-DESCRIPTION sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XKEYFIELD sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XCHECKTABLE sy-vline 
WA_EEW_OOW_FLD_DEF_STR-CHECKTABLE sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XCHECKTABLE_GEN sy-vline 
WA_EEW_OOW_FLD_DEF_STR-REF_TABLE sy-vline 
WA_EEW_OOW_FLD_DEF_STR-REF_FIELD sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP01 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP02 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP03 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP04 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP05 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP06 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP07 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP08 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP09 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-GRP10 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE_DEFAULT_SET sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE02 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE03 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE04 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE05 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE06 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE07 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE08 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE09 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE10 sy-vline 
WA_EEW_OOW_FLD_DEF_STR-DCM_LENGTH sy-vline 
WA_EEW_OOW_FLD_DEF_STR-XUSE01 sy-vline      INTO ld_text SEPARATED BY SPACE.

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