ABAP Select data from SAP table TCTM_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCTM_ATTR
*  INTO TABLE @DATA(IT_TCTM_ATTR2).
*--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_TCTM_ATTR INDEX 1 INTO DATA(WA_TCTM_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCTM_ATTR>-ATTRIB_ID = 1.
<TCTM_ATTR>-CHECKTABLE = 1.
<TCTM_ATTR>-CHECKFIELD = 1.
<TCTM_ATTR>-FUSER = 1.
<TCTM_ATTR>-FDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCTM_ATTR-FTIME, sy-vline,
  WA_TCTM_ATTR-FRELEASE, sy-vline,
  WA_TCTM_ATTR-LUSER, sy-vline,
  WA_TCTM_ATTR-LDATE, sy-vline,
  WA_TCTM_ATTR-LTIME, sy-vline,
  WA_TCTM_ATTR-LRELEASE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCTM_ATTR 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_TCTM_ATTR 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_TCTM_ATTR INTO WA_TCTM_ATTR.


*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_TCTM_ATTR_STR, 
ATTRIB_ID TYPE STRING,
CHECKTABLE TYPE STRING,
CHECKFIELD TYPE STRING,
FUSER TYPE STRING,
FDATE TYPE STRING,
FTIME TYPE STRING,
FRELEASE TYPE STRING,
LUSER TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
LRELEASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCTM_ATTR_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_TCTM_ATTR_STR-ATTRIB_ID sy-vline 
WA_TCTM_ATTR_STR-CHECKTABLE sy-vline 
WA_TCTM_ATTR_STR-CHECKFIELD sy-vline 
WA_TCTM_ATTR_STR-FUSER sy-vline 
WA_TCTM_ATTR_STR-FDATE sy-vline 
WA_TCTM_ATTR_STR-FTIME sy-vline 
WA_TCTM_ATTR_STR-FRELEASE sy-vline 
WA_TCTM_ATTR_STR-LUSER sy-vline 
WA_TCTM_ATTR_STR-LDATE sy-vline 
WA_TCTM_ATTR_STR-LTIME sy-vline 
WA_TCTM_ATTR_STR-LRELEASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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