ABAP Select data from SAP table TFC_TASK_SINGLE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TFC_TASK_SINGLE 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_TASK_SINGLE. 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_TASK_SINGLE 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_TASK_SINGLE TYPE STANDARD TABLE OF TFC_TASK_SINGLE,
      WA_TFC_TASK_SINGLE TYPE TFC_TASK_SINGLE,
      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_TASK_SINGLE> TYPE TFC_TASK_SINGLE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFC_TASK_SINGLE
*  INTO TABLE @DATA(IT_TFC_TASK_SINGLE2).
*--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_TASK_SINGLE INDEX 1 INTO DATA(WA_TFC_TASK_SINGLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFC_TASK_SINGLE>-REPORT = 1.
<TFC_TASK_SINGLE>-VARIANTE = 1.
<TFC_TASK_SINGLE>-TEXT = 1.
<TFC_TASK_SINGLE>-TRANSACT = 1.
<TFC_TASK_SINGLE>-EXE_DAY_OFFSET = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFC_TASK_SINGLE-EXE_TIME, sy-vline,
  WA_TFC_TASK_SINGLE-REPORT_SEL, sy-vline,
  WA_TFC_TASK_SINGLE-OTHER_SEL, sy-vline,
  WA_TFC_TASK_SINGLE-SEQUENCE_SEL, sy-vline,
  WA_TFC_TASK_SINGLE-TRANSACTION_SEL, sy-vline,
  WA_TFC_TASK_SINGLE-SEQUENCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFC_TASK_SINGLE 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_TASK_SINGLE 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_TASK_SINGLE INTO WA_TFC_TASK_SINGLE.


*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_TFC_TASK_SINGLE_STR, 
REPORT TYPE STRING,
VARIANTE TYPE STRING,
TEXT TYPE STRING,
TRANSACT TYPE STRING,
EXE_DAY_OFFSET TYPE STRING,
EXE_TIME TYPE STRING,
REPORT_SEL TYPE STRING,
OTHER_SEL TYPE STRING,
SEQUENCE_SEL TYPE STRING,
TRANSACTION_SEL TYPE STRING,
SEQUENCE TYPE STRING,
EXE_USR TYPE STRING,
RES_USR TYPE STRING,
KIND TYPE STRING,
APPLICATION TYPE STRING,
DELFLG TYPE STRING,
RUNTIME_DAYS TYPE STRING,
RUNTIME_HOURS TYPE STRING,
RUNTIME_MINUTES TYPE STRING,
IUSAGE TYPE STRING,
USE_M TYPE STRING,
USE_Q TYPE STRING,
USE_Y TYPE STRING,
USE_Z TYPE STRING,
USE_S TYPE STRING,
CRIT_PATH TYPE STRING,
AGR_NAME TYPE STRING,
RT_DEF_ID TYPE STRING,
RT_QUEUE TYPE STRING,
RT_JOB_ID TYPE STRING,
RT_SEL TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
LAUFZEIT_D TYPE STRING,
LAUFZEIT_T TYPE STRING,
LOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFC_TASK_SINGLE_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_TASK_SINGLE_STR-REPORT sy-vline 
WA_TFC_TASK_SINGLE_STR-VARIANTE sy-vline 
WA_TFC_TASK_SINGLE_STR-TEXT sy-vline 
WA_TFC_TASK_SINGLE_STR-TRANSACT sy-vline 
WA_TFC_TASK_SINGLE_STR-EXE_DAY_OFFSET sy-vline 
WA_TFC_TASK_SINGLE_STR-EXE_TIME sy-vline 
WA_TFC_TASK_SINGLE_STR-REPORT_SEL sy-vline 
WA_TFC_TASK_SINGLE_STR-OTHER_SEL sy-vline 
WA_TFC_TASK_SINGLE_STR-SEQUENCE_SEL sy-vline 
WA_TFC_TASK_SINGLE_STR-TRANSACTION_SEL sy-vline 
WA_TFC_TASK_SINGLE_STR-SEQUENCE sy-vline 
WA_TFC_TASK_SINGLE_STR-EXE_USR sy-vline 
WA_TFC_TASK_SINGLE_STR-RES_USR sy-vline 
WA_TFC_TASK_SINGLE_STR-KIND sy-vline 
WA_TFC_TASK_SINGLE_STR-APPLICATION sy-vline 
WA_TFC_TASK_SINGLE_STR-DELFLG sy-vline 
WA_TFC_TASK_SINGLE_STR-RUNTIME_DAYS sy-vline 
WA_TFC_TASK_SINGLE_STR-RUNTIME_HOURS sy-vline 
WA_TFC_TASK_SINGLE_STR-RUNTIME_MINUTES sy-vline 
WA_TFC_TASK_SINGLE_STR-IUSAGE sy-vline 
WA_TFC_TASK_SINGLE_STR-USE_M sy-vline 
WA_TFC_TASK_SINGLE_STR-USE_Q sy-vline 
WA_TFC_TASK_SINGLE_STR-USE_Y sy-vline 
WA_TFC_TASK_SINGLE_STR-USE_Z sy-vline 
WA_TFC_TASK_SINGLE_STR-USE_S sy-vline 
WA_TFC_TASK_SINGLE_STR-CRIT_PATH sy-vline 
WA_TFC_TASK_SINGLE_STR-AGR_NAME sy-vline 
WA_TFC_TASK_SINGLE_STR-RT_DEF_ID sy-vline 
WA_TFC_TASK_SINGLE_STR-RT_QUEUE sy-vline 
WA_TFC_TASK_SINGLE_STR-RT_JOB_ID sy-vline 
WA_TFC_TASK_SINGLE_STR-RT_SEL sy-vline 
WA_TFC_TASK_SINGLE_STR-START_DATE sy-vline 
WA_TFC_TASK_SINGLE_STR-START_TIME sy-vline 
WA_TFC_TASK_SINGLE_STR-END_DATE sy-vline 
WA_TFC_TASK_SINGLE_STR-END_TIME sy-vline 
WA_TFC_TASK_SINGLE_STR-LAUFZEIT_D sy-vline 
WA_TFC_TASK_SINGLE_STR-LAUFZEIT_T sy-vline 
WA_TFC_TASK_SINGLE_STR-LOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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