ABAP Select data from SAP table TPCOLAC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TPCOLAC 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 TPCOLAC. 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 TPCOLAC 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_TPCOLAC TYPE STANDARD TABLE OF TPCOLAC,
      WA_TPCOLAC TYPE TPCOLAC,
      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: <TPCOLAC> TYPE TPCOLAC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPCOLAC
*  INTO TABLE @DATA(IT_TPCOLAC2).
*--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_TPCOLAC INDEX 1 INTO DATA(WA_TPCOLAC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPCOLAC>-ROWNAME = 1.
<TPCOLAC>-IDX = 1.
<TPCOLAC>-NAME = 1.
<TPCOLAC>-WIDTH = 1.
<TPCOLAC>-WIDTH_U = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPCOLAC-FIXED, sy-vline,
  WA_TPCOLAC-INTENSITY, sy-vline,
  WA_TPCOLAC-LLEFT, sy-vline,
  WA_TPCOLAC-LLEFT_U, sy-vline,
  WA_TPCOLAC-LTOP, sy-vline,
  WA_TPCOLAC-LTOP_U, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPCOLAC 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_TPCOLAC 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_TPCOLAC INTO WA_TPCOLAC.


*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_TPCOLAC_STR, 
ROWNAME TYPE STRING,
IDX TYPE STRING,
NAME TYPE STRING,
WIDTH TYPE STRING,
WIDTH_U TYPE STRING,
FIXED TYPE STRING,
INTENSITY TYPE STRING,
LLEFT TYPE STRING,
LLEFT_U TYPE STRING,
LTOP TYPE STRING,
LTOP_U TYPE STRING,
LRIGHT TYPE STRING,
LRIGHT_U TYPE STRING,
LBOTTOM TYPE STRING,
LBOTTOM_U TYPE STRING,
FILLCOLOR TYPE STRING,
RED TYPE STRING,
GREEN TYPE STRING,
BLUE TYPE STRING,
USED TYPE STRING,
CLEFT TYPE STRING,
RED TYPE STRING,
GREEN TYPE STRING,
BLUE TYPE STRING,
USED TYPE STRING,
CTOP TYPE STRING,
RED TYPE STRING,
GREEN TYPE STRING,
BLUE TYPE STRING,
USED TYPE STRING,
CRIGHT TYPE STRING,
RED TYPE STRING,
GREEN TYPE STRING,
BLUE TYPE STRING,
USED TYPE STRING,
CBOTTOM TYPE STRING,
RED TYPE STRING,
GREEN TYPE STRING,
BLUE TYPE STRING,
USED TYPE STRING,
HIGHLIGHTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPCOLAC_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_TPCOLAC_STR-ROWNAME sy-vline 
WA_TPCOLAC_STR-IDX sy-vline 
WA_TPCOLAC_STR-NAME sy-vline 
WA_TPCOLAC_STR-WIDTH sy-vline 
WA_TPCOLAC_STR-WIDTH_U sy-vline 
WA_TPCOLAC_STR-FIXED sy-vline 
WA_TPCOLAC_STR-INTENSITY sy-vline 
WA_TPCOLAC_STR-LLEFT sy-vline 
WA_TPCOLAC_STR-LLEFT_U sy-vline 
WA_TPCOLAC_STR-LTOP sy-vline 
WA_TPCOLAC_STR-LTOP_U sy-vline 
WA_TPCOLAC_STR-LRIGHT sy-vline 
WA_TPCOLAC_STR-LRIGHT_U sy-vline 
WA_TPCOLAC_STR-LBOTTOM sy-vline 
WA_TPCOLAC_STR-LBOTTOM_U sy-vline 
WA_TPCOLAC_STR-FILLCOLOR sy-vline 
WA_TPCOLAC_STR-RED sy-vline 
WA_TPCOLAC_STR-GREEN sy-vline 
WA_TPCOLAC_STR-BLUE sy-vline 
WA_TPCOLAC_STR-USED sy-vline 
WA_TPCOLAC_STR-CLEFT sy-vline 
WA_TPCOLAC_STR-RED sy-vline 
WA_TPCOLAC_STR-GREEN sy-vline 
WA_TPCOLAC_STR-BLUE sy-vline 
WA_TPCOLAC_STR-USED sy-vline 
WA_TPCOLAC_STR-CTOP sy-vline 
WA_TPCOLAC_STR-RED sy-vline 
WA_TPCOLAC_STR-GREEN sy-vline 
WA_TPCOLAC_STR-BLUE sy-vline 
WA_TPCOLAC_STR-USED sy-vline 
WA_TPCOLAC_STR-CRIGHT sy-vline 
WA_TPCOLAC_STR-RED sy-vline 
WA_TPCOLAC_STR-GREEN sy-vline 
WA_TPCOLAC_STR-BLUE sy-vline 
WA_TPCOLAC_STR-USED sy-vline 
WA_TPCOLAC_STR-CBOTTOM sy-vline 
WA_TPCOLAC_STR-RED sy-vline 
WA_TPCOLAC_STR-GREEN sy-vline 
WA_TPCOLAC_STR-BLUE sy-vline 
WA_TPCOLAC_STR-USED sy-vline 
WA_TPCOLAC_STR-HIGHLIGHTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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