ABAP Select data from SAP table TFC_CDRED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFC_CDRED
*  INTO TABLE @DATA(IT_TFC_CDRED2).
*--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_TFC_CDRED INDEX 1 INTO DATA(WA_TFC_CDRED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFC_CDRED>-OBJECTID = 1.
<TFC_CDRED>-CHANGENR = 1.
<TFC_CDRED>-USERNAME = 1.
<TFC_CDRED>-UDATE = 1.
<TFC_CDRED>-UTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFC_CDRED-TCODE, sy-vline,
  WA_TFC_CDRED-TABNAME, sy-vline,
  WA_TFC_CDRED-TABKEY, sy-vline,
  WA_TFC_CDRED-KEYLEN, sy-vline,
  WA_TFC_CDRED-CHNGIND, sy-vline,
  WA_TFC_CDRED-FNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFC_CDRED 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_TFC_CDRED 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_TFC_CDRED INTO WA_TFC_CDRED.


*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 CHANGENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TFC_CDRED-CHANGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_CDRED-CHANGENR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit OFFUZ, internal->external for field OFFSET_UZEIT
CALL FUNCTION 'CONVERSION_EXIT_OFFUZ_OUTPUT'
  EXPORTING
    input =                      WA_TFC_CDRED-OFFSET_UZEIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_CDRED-OFFSET_UZEIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DATUZ, internal->external for field START_DATE_TIME
CALL FUNCTION 'CONVERSION_EXIT_DATUZ_OUTPUT'
  EXPORTING
    input =                      WA_TFC_CDRED-START_DATE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_CDRED-START_DATE_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DATUZ, internal->external for field END_DATE_TIME
CALL FUNCTION 'CONVERSION_EXIT_DATUZ_OUTPUT'
  EXPORTING
    input =                      WA_TFC_CDRED-END_DATE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_CDRED-END_DATE_TIME.
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_TFC_CDRED_STR, 
OBJECTID TYPE STRING,
CHANGENR TYPE STRING,
USERNAME TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
TCODE TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
TEXTART TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
OUTLEN TYPE STRING,
F_OLD TYPE STRING,
F_NEW TYPE STRING,
KEYGUID TYPE STRING,
TABKEY254 TYPE STRING,
EXT_KEYLEN TYPE STRING,
KEYGUID_STR TYPE STRING,
VERSION TYPE STRING,
ICON_JOB_KIND TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
TEST_STATUS TYPE STRING,
TEST_STATUS_TEXT TYPE STRING,
SPOOL TYPE STRING,
SPOOL_TEXT TYPE STRING,
JOBLOG TYPE STRING,
JOBLOG_TEXT TYPE STRING,
INACTIVE_ TYPE STRING,
INACTIVE_TEXT TYPE STRING,
LOCKED_ TYPE STRING,
LOCKED_TEXT TYPE STRING,
NOTIZ TYPE STRING,
NOTIZ_TEXT TYPE STRING,
DOCUMENT TYPE STRING,
DOCUMENT_TEXT TYPE STRING,
CRIT_PATH_ TYPE STRING,
CRIT_PATH_TEXT TYPE STRING,
AUTO_VAR TYPE STRING,
PATH TYPE STRING,
POS TYPE STRING,
KIND TYPE STRING,
JOB TYPE STRING,
TEXT TYPE STRING,
REPORT TYPE STRING,
VARIANTE TYPE STRING,
SEQUENCE TYPE STRING,
TRANSACT TYPE STRING,
EXE_USR TYPE STRING,
RES_USR TYPE STRING,
AGR_NAME TYPE STRING,
OFFSET_UZEIT TYPE STRING,
EXE_DAY_OFFSET TYPE STRING,
EXE_TIME TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
START_DATE_TIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
END_DATE_TIME TYPE STRING,
ITEMX TYPE STRING,
DEP TYPE STRING,
CNODE TYPE STRING,
NKEY TYPE STRING,
RT_DEF_ID TYPE STRING,
RT_QUEUE TYPE STRING,
RT_SEL TYPE STRING,
RT_JOB_ID TYPE STRING,
START_DATE_PLAN TYPE STRING,
ITEM TYPE STRING,
STATUS_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFC_CDRED_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_TFC_CDRED_STR-OBJECTID sy-vline 
WA_TFC_CDRED_STR-CHANGENR sy-vline 
WA_TFC_CDRED_STR-USERNAME sy-vline 
WA_TFC_CDRED_STR-UDATE sy-vline 
WA_TFC_CDRED_STR-UTIME sy-vline 
WA_TFC_CDRED_STR-TCODE sy-vline 
WA_TFC_CDRED_STR-TABNAME sy-vline 
WA_TFC_CDRED_STR-TABKEY sy-vline 
WA_TFC_CDRED_STR-KEYLEN sy-vline 
WA_TFC_CDRED_STR-CHNGIND sy-vline 
WA_TFC_CDRED_STR-FNAME sy-vline 
WA_TFC_CDRED_STR-FTEXT sy-vline 
WA_TFC_CDRED_STR-TEXTART sy-vline 
WA_TFC_CDRED_STR-SPRACHE sy-vline 
WA_TFC_CDRED_STR-TEXT_CASE sy-vline 
WA_TFC_CDRED_STR-OUTLEN sy-vline 
WA_TFC_CDRED_STR-F_OLD sy-vline 
WA_TFC_CDRED_STR-F_NEW sy-vline 
WA_TFC_CDRED_STR-KEYGUID sy-vline 
WA_TFC_CDRED_STR-TABKEY254 sy-vline 
WA_TFC_CDRED_STR-EXT_KEYLEN sy-vline 
WA_TFC_CDRED_STR-KEYGUID_STR sy-vline 
WA_TFC_CDRED_STR-VERSION sy-vline 
WA_TFC_CDRED_STR-ICON_JOB_KIND sy-vline 
WA_TFC_CDRED_STR-STATUS sy-vline 
WA_TFC_CDRED_STR-STATUS_TEXT sy-vline 
WA_TFC_CDRED_STR-TEST_STATUS sy-vline 
WA_TFC_CDRED_STR-TEST_STATUS_TEXT sy-vline 
WA_TFC_CDRED_STR-SPOOL sy-vline 
WA_TFC_CDRED_STR-SPOOL_TEXT sy-vline 
WA_TFC_CDRED_STR-JOBLOG sy-vline 
WA_TFC_CDRED_STR-JOBLOG_TEXT sy-vline 
WA_TFC_CDRED_STR-INACTIVE_ sy-vline 
WA_TFC_CDRED_STR-INACTIVE_TEXT sy-vline 
WA_TFC_CDRED_STR-LOCKED_ sy-vline 
WA_TFC_CDRED_STR-LOCKED_TEXT sy-vline 
WA_TFC_CDRED_STR-NOTIZ sy-vline 
WA_TFC_CDRED_STR-NOTIZ_TEXT sy-vline 
WA_TFC_CDRED_STR-DOCUMENT sy-vline 
WA_TFC_CDRED_STR-DOCUMENT_TEXT sy-vline 
WA_TFC_CDRED_STR-CRIT_PATH_ sy-vline 
WA_TFC_CDRED_STR-CRIT_PATH_TEXT sy-vline 
WA_TFC_CDRED_STR-AUTO_VAR sy-vline 
WA_TFC_CDRED_STR-PATH sy-vline 
WA_TFC_CDRED_STR-POS sy-vline 
WA_TFC_CDRED_STR-KIND sy-vline 
WA_TFC_CDRED_STR-JOB sy-vline 
WA_TFC_CDRED_STR-TEXT sy-vline 
WA_TFC_CDRED_STR-REPORT sy-vline 
WA_TFC_CDRED_STR-VARIANTE sy-vline 
WA_TFC_CDRED_STR-SEQUENCE sy-vline 
WA_TFC_CDRED_STR-TRANSACT sy-vline 
WA_TFC_CDRED_STR-EXE_USR sy-vline 
WA_TFC_CDRED_STR-RES_USR sy-vline 
WA_TFC_CDRED_STR-AGR_NAME sy-vline 
WA_TFC_CDRED_STR-OFFSET_UZEIT sy-vline 
WA_TFC_CDRED_STR-EXE_DAY_OFFSET sy-vline 
WA_TFC_CDRED_STR-EXE_TIME sy-vline 
WA_TFC_CDRED_STR-START_DATE sy-vline 
WA_TFC_CDRED_STR-START_TIME sy-vline 
WA_TFC_CDRED_STR-START_DATE_TIME sy-vline 
WA_TFC_CDRED_STR-END_DATE sy-vline 
WA_TFC_CDRED_STR-END_TIME sy-vline 
WA_TFC_CDRED_STR-END_DATE_TIME sy-vline 
WA_TFC_CDRED_STR-ITEMX sy-vline 
WA_TFC_CDRED_STR-DEP sy-vline 
WA_TFC_CDRED_STR-CNODE sy-vline 
WA_TFC_CDRED_STR-NKEY sy-vline 
WA_TFC_CDRED_STR-RT_DEF_ID sy-vline 
WA_TFC_CDRED_STR-RT_QUEUE sy-vline 
WA_TFC_CDRED_STR-RT_SEL sy-vline 
WA_TFC_CDRED_STR-RT_JOB_ID sy-vline 
WA_TFC_CDRED_STR-START_DATE_PLAN sy-vline 
WA_TFC_CDRED_STR-ITEM sy-vline 
WA_TFC_CDRED_STR-STATUS_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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