ABAP Select data from SAP table TDS_GAF_EWB_PREDEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_GAF_EWB_PREDEF
*  INTO TABLE @DATA(IT_TDS_GAF_EWB_PREDEF2).
*--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_TDS_GAF_EWB_PREDEF INDEX 1 INTO DATA(WA_TDS_GAF_EWB_PREDEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_GAF_EWB_PREDEF>-OBJECT_TYPE = 1.
<TDS_GAF_EWB_PREDEF>-SOURCE_TAB = 1.
<TDS_GAF_EWB_PREDEF>-FIELD_INT = 1.
<TDS_GAF_EWB_PREDEF>-TABNAME = 1.
<TDS_GAF_EWB_PREDEF>-FIELDNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_GAF_EWB_PREDEF-DDLANGUAGE, sy-vline,
  WA_TDS_GAF_EWB_PREDEF-POSITION, sy-vline,
  WA_TDS_GAF_EWB_PREDEF-KEYFLAG, sy-vline,
  WA_TDS_GAF_EWB_PREDEF-MANDATORY, sy-vline,
  WA_TDS_GAF_EWB_PREDEF-ROLLNAME, sy-vline,
  WA_TDS_GAF_EWB_PREDEF-CHECKTABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_GAF_EWB_PREDEF 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_TDS_GAF_EWB_PREDEF 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_TDS_GAF_EWB_PREDEF INTO WA_TDS_GAF_EWB_PREDEF.


*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 DDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TDS_GAF_EWB_PREDEF-DDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_GAF_EWB_PREDEF-DDLANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_TDS_GAF_EWB_PREDEF-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_GAF_EWB_PREDEF-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field DOMMASTER
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TDS_GAF_EWB_PREDEF-DOMMASTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_GAF_EWB_PREDEF-DOMMASTER.
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_TDS_GAF_EWB_PREDEF_STR, 
OBJECT_TYPE TYPE STRING,
SOURCE_TAB TYPE STRING,
FIELD_INT TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DDLANGUAGE TYPE STRING,
POSITION TYPE STRING,
KEYFLAG TYPE STRING,
MANDATORY TYPE STRING,
ROLLNAME TYPE STRING,
CHECKTABLE TYPE STRING,
ADMINFIELD TYPE STRING,
INTTYPE TYPE STRING,
INTLEN TYPE STRING,
REFTABLE TYPE STRING,
PRECFIELD TYPE STRING,
REFFIELD TYPE STRING,
CONROUT TYPE STRING,
NOTNULL TYPE STRING,
DOMNAME TYPE STRING,
ROUTPUTLEN TYPE STRING,
MEMORYID TYPE STRING,
LOGFLAG TYPE STRING,
HEADLEN TYPE STRING,
SCRLEN1 TYPE STRING,
SCRLEN2 TYPE STRING,
SCRLEN3 TYPE STRING,
DTELGLOBAL TYPE STRING,
DTELMASTER TYPE STRING,
RESERVEDTE TYPE STRING,
DATATYPE TYPE STRING,
LENG TYPE STRING,
OUTPUTLEN TYPE STRING,
DECIMALS TYPE STRING,
LOWERCASE TYPE STRING,
SIGNFLAG TYPE STRING,
LANGFLAG TYPE STRING,
VALEXI TYPE STRING,
ENTITYTAB TYPE STRING,
CONVEXIT TYPE STRING,
MASK TYPE STRING,
MASKLEN TYPE STRING,
ACTFLAG TYPE STRING,
DDTEXT TYPE STRING,
REPTEXT TYPE STRING,
SCRTEXT_S TYPE STRING,
SCRTEXT_M TYPE STRING,
SCRTEXT_L TYPE STRING,
DOMMASTER TYPE STRING,
RESERVEDOM TYPE STRING,
DOMGLOBAL TYPE STRING,
DOMNAME3L TYPE STRING,
SHLPORIGIN TYPE STRING,
SHLPNAME TYPE STRING,
SHLPFIELD TYPE STRING,
TABLETYPE TYPE STRING,
DEPTH TYPE STRING,
COMPTYPE TYPE STRING,
DEFFDNAME TYPE STRING,
GROUPNAME TYPE STRING,
REFTYPE TYPE STRING,
PROXYTYPE TYPE STRING,
LANGUFLAG TYPE STRING,
EXCLASS TYPE STRING,
LTRFLDDIS TYPE STRING,
BIDICTRLC TYPE STRING,
DBPOSITION TYPE STRING,
ANONYMOUS TYPE STRING,
OUTPUTSTYLE TYPE STRING,
NOHISTORY TYPE STRING,
AMPMFORMAT TYPE STRING,
STREAMORLOC TYPE STRING,
STRORLOCPOS TYPE STRING,
SQL_PASSVALUE TYPE STRING,
IS_VIRTUAL TYPE STRING,
IS_CALCULATED TYPE STRING,
EXTENDNAME TYPE STRING,
SRS_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_GAF_EWB_PREDEF_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_TDS_GAF_EWB_PREDEF_STR-OBJECT_TYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SOURCE_TAB sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-FIELD_INT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-TABNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-FIELDNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DDLANGUAGE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-POSITION sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-KEYFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-MANDATORY sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ROLLNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-CHECKTABLE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ADMINFIELD sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-INTTYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-INTLEN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-REFTABLE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-PRECFIELD sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-REFFIELD sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-CONROUT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-NOTNULL sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DOMNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ROUTPUTLEN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-MEMORYID sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LOGFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-HEADLEN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRLEN1 sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRLEN2 sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRLEN3 sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DTELGLOBAL sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DTELMASTER sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-RESERVEDTE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DATATYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LENG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-OUTPUTLEN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DECIMALS sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LOWERCASE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SIGNFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LANGFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-VALEXI sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ENTITYTAB sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-CONVEXIT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-MASK sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-MASKLEN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ACTFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DDTEXT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-REPTEXT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRTEXT_S sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRTEXT_M sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SCRTEXT_L sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DOMMASTER sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-RESERVEDOM sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DOMGLOBAL sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DOMNAME3L sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SHLPORIGIN sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SHLPNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SHLPFIELD sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-TABLETYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DEPTH sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-COMPTYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DEFFDNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-GROUPNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-REFTYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-PROXYTYPE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LANGUFLAG sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-EXCLASS sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-LTRFLDDIS sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-BIDICTRLC sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-DBPOSITION sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-ANONYMOUS sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-OUTPUTSTYLE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-NOHISTORY sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-AMPMFORMAT sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-STREAMORLOC sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-STRORLOCPOS sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SQL_PASSVALUE sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-IS_VIRTUAL sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-IS_CALCULATED sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-EXTENDNAME sy-vline 
WA_TDS_GAF_EWB_PREDEF_STR-SRS_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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