ABAP Select data from SAP table T001C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T001C 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 T001C. 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 T001C 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_T001C TYPE STANDARD TABLE OF T001C,
      WA_T001C TYPE T001C,
      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: <T001C> TYPE T001C.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T001C.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T001C
  INTO TABLE IT_T001C.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T001C
*  INTO TABLE @DATA(IT_T001C2).
*--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_T001C INDEX 1 INTO DATA(WA_T001C2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T001C ASSIGNING <T001C>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T001C>-MANDT = 1.
<T001C>-RRCTY = 1.
<T001C>-RCOMP = 1.
<T001C>-MKOAR = 1.
<T001C>-BKONT = 1.

ENDLOOP.

LOOP AT IT_T001C INTO WA_T001C.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T001C-VKONT, sy-vline,
  WA_T001C-FRYE1, sy-vline,
  WA_T001C-FRPE1, sy-vline,
  WA_T001C-TOYE1, sy-vline,
  WA_T001C-TOPE1, sy-vline,
  WA_T001C-FRYE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T001C 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_T001C 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_T001C INTO WA_T001C.


*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 ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T001C-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T001C-BKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-BKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T001C-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYE1
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001C-FRYE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-FRYE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYE1
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001C-TOYE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-TOYE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FRYE2
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001C-FRYE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-FRYE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TOYE2
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T001C-TOYE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T001C-TOYE2.
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_T001C_STR, 
MANDT TYPE STRING,
RRCTY TYPE STRING,
RCOMP TYPE STRING,
MKOAR TYPE STRING,
BKONT TYPE STRING,
VKONT TYPE STRING,
FRYE1 TYPE STRING,
FRPE1 TYPE STRING,
TOYE1 TYPE STRING,
TOPE1 TYPE STRING,
FRYE2 TYPE STRING,
FRPE2 TYPE STRING,
TOYE2 TYPE STRING,
TOPE2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T001C_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_T001C_STR-MANDT sy-vline 
WA_T001C_STR-RRCTY sy-vline 
WA_T001C_STR-RCOMP sy-vline 
WA_T001C_STR-MKOAR sy-vline 
WA_T001C_STR-BKONT sy-vline 
WA_T001C_STR-VKONT sy-vline 
WA_T001C_STR-FRYE1 sy-vline 
WA_T001C_STR-FRPE1 sy-vline 
WA_T001C_STR-TOYE1 sy-vline 
WA_T001C_STR-TOPE1 sy-vline 
WA_T001C_STR-FRYE2 sy-vline 
WA_T001C_STR-FRPE2 sy-vline 
WA_T001C_STR-TOYE2 sy-vline 
WA_T001C_STR-TOPE2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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