ABAP Select data from SAP table TACE_COMP_SPEC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TACE_COMP_SPEC
*  INTO TABLE @DATA(IT_TACE_COMP_SPEC2).
*--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_TACE_COMP_SPEC INDEX 1 INTO DATA(WA_TACE_COMP_SPEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TACE_COMP_SPEC>-MANDT = 1.
<TACE_COMP_SPEC>-COMP = 1.
<TACE_COMP_SPEC>-INC_SEL_REFKEY = 1.
<TACE_COMP_SPEC>-INC_SEL_RKEY_LDB = 1.
<TACE_COMP_SPEC>-INC_SEL_REFSUBKY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TACE_COMP_SPEC-INC_SEL_RSKY_LD, sy-vline,
  WA_TACE_COMP_SPEC-INC_SEL_SIMULATE, sy-vline,
  WA_TACE_COMP_SPEC-INC_SEL_COMP, sy-vline,
  WA_TACE_COMP_SPEC-REP_PERIODIC_ACT, sy-vline,
  WA_TACE_COMP_SPEC-REP_PERIODIC_SIM, sy-vline,
  WA_TACE_COMP_SPEC-REP_PERIODIC_REV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TACE_COMP_SPEC 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_TACE_COMP_SPEC 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_TACE_COMP_SPEC INTO WA_TACE_COMP_SPEC.


*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_TACE_COMP_SPEC_STR, 
MANDT TYPE STRING,
COMP TYPE STRING,
INC_SEL_REFKEY TYPE STRING,
INC_SEL_RKEY_LDB TYPE STRING,
INC_SEL_REFSUBKY TYPE STRING,
INC_SEL_RSKY_LD TYPE STRING,
INC_SEL_SIMULATE TYPE STRING,
INC_SEL_COMP TYPE STRING,
REP_PERIODIC_ACT TYPE STRING,
REP_PERIODIC_SIM TYPE STRING,
REP_PERIODIC_REV TYPE STRING,
REP_2ACC_TRANSFR TYPE STRING,
REP_ACEFI_RECONC TYPE STRING,
REP_TREE_PRESEL TYPE STRING,
REP_CARRY_FORWRD TYPE STRING,
REP_ARCHIV_PREP TYPE STRING,
REP_LINEITM_DISP TYPE STRING,
PRG_REFKEY_SUBSC TYPE STRING,
REFKEY_SUBSC_NR TYPE STRING,
PRG_RFSBKY_SUBSC TYPE STRING,
RFSBKY_SUBSC_NR TYPE STRING,
PRG_PARAMS_SUBSC TYPE STRING,
PARAMS_SUBSC_NR TYPE STRING,
PRG_ASSGMT_SUBSC TYPE STRING,
ASSGMT_SUBSC_NR TYPE STRING,
PRG_ACCNTS_SUBSC TYPE STRING,
ACCNTS_SUBSC_NR TYPE STRING,
MDO_CLASS TYPE STRING,
MDO_DBBUF_CLASS TYPE STRING,
PRG_COBL_SUBSC TYPE STRING,
COBL_SUBSC_NR TYPE STRING,
ACCINT_CLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TACE_COMP_SPEC_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_TACE_COMP_SPEC_STR-MANDT sy-vline 
WA_TACE_COMP_SPEC_STR-COMP sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_REFKEY sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_RKEY_LDB sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_REFSUBKY sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_RSKY_LD sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_SIMULATE sy-vline 
WA_TACE_COMP_SPEC_STR-INC_SEL_COMP sy-vline 
WA_TACE_COMP_SPEC_STR-REP_PERIODIC_ACT sy-vline 
WA_TACE_COMP_SPEC_STR-REP_PERIODIC_SIM sy-vline 
WA_TACE_COMP_SPEC_STR-REP_PERIODIC_REV sy-vline 
WA_TACE_COMP_SPEC_STR-REP_2ACC_TRANSFR sy-vline 
WA_TACE_COMP_SPEC_STR-REP_ACEFI_RECONC sy-vline 
WA_TACE_COMP_SPEC_STR-REP_TREE_PRESEL sy-vline 
WA_TACE_COMP_SPEC_STR-REP_CARRY_FORWRD sy-vline 
WA_TACE_COMP_SPEC_STR-REP_ARCHIV_PREP sy-vline 
WA_TACE_COMP_SPEC_STR-REP_LINEITM_DISP sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_REFKEY_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-REFKEY_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_RFSBKY_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-RFSBKY_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_PARAMS_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-PARAMS_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_ASSGMT_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-ASSGMT_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_ACCNTS_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-ACCNTS_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-MDO_CLASS sy-vline 
WA_TACE_COMP_SPEC_STR-MDO_DBBUF_CLASS sy-vline 
WA_TACE_COMP_SPEC_STR-PRG_COBL_SUBSC sy-vline 
WA_TACE_COMP_SPEC_STR-COBL_SUBSC_NR sy-vline 
WA_TACE_COMP_SPEC_STR-ACCINT_CLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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