ABAP Select data from SAP table ABC_CON 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 ABC_CON 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 ABC_CON. 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 ABC_CON 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_ABC_CON TYPE STANDARD TABLE OF ABC_CON,
      WA_ABC_CON TYPE ABC_CON,
      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: <ABC_CON> TYPE ABC_CON.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ABC_CON
*  INTO TABLE @DATA(IT_ABC_CON2).
*--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_ABC_CON INDEX 1 INTO DATA(WA_ABC_CON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ABC_CON>-TEMPLATE = 1.
<ABC_CON>-KOKRS = 1.
<ABC_CON>-CLASS = 1.
<ABC_CON>-GJAHR = 1.
<ABC_CON>-CO_OBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ABC_CON-REPID, sy-vline,
  WA_ABC_CON-ACTIVE, sy-vline,
  WA_ABC_CON-DATAB, sy-vline,
  WA_ABC_CON-DATBI, sy-vline,
  WA_ABC_CON-PERIODFROM, sy-vline,
  WA_ABC_CON-PERIODCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ABC_CON 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_ABC_CON 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_ABC_CON INTO WA_ABC_CON.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ABC_CON-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ABC_CON-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field VJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ABC_CON-VJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ABC_CON-VJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field NJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ABC_CON-NJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ABC_CON-NJAHR.
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_ABC_CON_STR, 
TEMPLATE TYPE STRING,
KOKRS TYPE STRING,
CLASS TYPE STRING,
GJAHR TYPE STRING,
CO_OBJECT TYPE STRING,
REPID TYPE STRING,
ACTIVE TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
PERIODFROM TYPE STRING,
PERIODCNT TYPE STRING,
PERIODTO TYPE STRING,
VPERIOD TYPE STRING,
TPLCOL TYPE STRING,
LINE_TYPE TYPE STRING,
ACTPERIOD TYPE STRING,
REFOBJ TYPE STRING,
UNIT_COSTING TYPE STRING,
TPLINDEX TYPE STRING,
VJAHR TYPE STRING,
NJAHR TYPE STRING,
CPROG TYPE STRING,
COMP_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ABC_CON_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_ABC_CON_STR-TEMPLATE sy-vline 
WA_ABC_CON_STR-KOKRS sy-vline 
WA_ABC_CON_STR-CLASS sy-vline 
WA_ABC_CON_STR-GJAHR sy-vline 
WA_ABC_CON_STR-CO_OBJECT sy-vline 
WA_ABC_CON_STR-REPID sy-vline 
WA_ABC_CON_STR-ACTIVE sy-vline 
WA_ABC_CON_STR-DATAB sy-vline 
WA_ABC_CON_STR-DATBI sy-vline 
WA_ABC_CON_STR-PERIODFROM sy-vline 
WA_ABC_CON_STR-PERIODCNT sy-vline 
WA_ABC_CON_STR-PERIODTO sy-vline 
WA_ABC_CON_STR-VPERIOD sy-vline 
WA_ABC_CON_STR-TPLCOL sy-vline 
WA_ABC_CON_STR-LINE_TYPE sy-vline 
WA_ABC_CON_STR-ACTPERIOD sy-vline 
WA_ABC_CON_STR-REFOBJ sy-vline 
WA_ABC_CON_STR-UNIT_COSTING sy-vline 
WA_ABC_CON_STR-TPLINDEX sy-vline 
WA_ABC_CON_STR-VJAHR sy-vline 
WA_ABC_CON_STR-NJAHR sy-vline 
WA_ABC_CON_STR-CPROG sy-vline 
WA_ABC_CON_STR-COMP_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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