ABAP Select data from SAP table T033C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T033C 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 T033C. 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 T033C 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_T033C TYPE STANDARD TABLE OF T033C,
      WA_T033C TYPE T033C,
      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: <T033C> TYPE T033C.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T033C.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T033C
  INTO TABLE IT_T033C.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T033C
*  INTO TABLE @DATA(IT_T033C2).
*--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_T033C INDEX 1 INTO DATA(WA_T033C2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T033C ASSIGNING <T033C>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T033C>-ANWND = 1.
<T033C>-MEIG1 = 1.
<T033C>-MEIG2 = 1.
<T033C>-MEIG3 = 1.
<T033C>-MEIG4 = 1.

ENDLOOP.

LOOP AT IT_T033C INTO WA_T033C.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T033C-OEIG1, sy-vline,
  WA_T033C-OEIG2, sy-vline,
  WA_T033C-OEIG3, sy-vline,
  WA_T033C-OEIG4, sy-vline,
  WA_T033C-LEIG1, sy-vline,
  WA_T033C-LEIG2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T033C 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_T033C 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_T033C INTO WA_T033C.


*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_T033C_STR, 
ANWND TYPE STRING,
MEIG1 TYPE STRING,
MEIG2 TYPE STRING,
MEIG3 TYPE STRING,
MEIG4 TYPE STRING,
OEIG1 TYPE STRING,
OEIG2 TYPE STRING,
OEIG3 TYPE STRING,
OEIG4 TYPE STRING,
LEIG1 TYPE STRING,
LEIG2 TYPE STRING,
LEIG3 TYPE STRING,
LEIG4 TYPE STRING,
TNAM1 TYPE STRING,
TNAM2 TYPE STRING,
TNAM3 TYPE STRING,
TNAM4 TYPE STRING,
FNAM1 TYPE STRING,
FNAM2 TYPE STRING,
FNAM3 TYPE STRING,
FNAM4 TYPE STRING,
XMOD1 TYPE STRING,
XMOD2 TYPE STRING,
TNAM5 TYPE STRING,
TNAM6 TYPE STRING,
FNAM5 TYPE STRING,
FNAM6 TYPE STRING,
TNAM7 TYPE STRING,
FNAM7 TYPE STRING,
LEIG7 TYPE STRING,
TNAM8 TYPE STRING,
FNAM8 TYPE STRING,
LEIG8 TYPE STRING,
FUNCNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T033C_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_T033C_STR-ANWND sy-vline 
WA_T033C_STR-MEIG1 sy-vline 
WA_T033C_STR-MEIG2 sy-vline 
WA_T033C_STR-MEIG3 sy-vline 
WA_T033C_STR-MEIG4 sy-vline 
WA_T033C_STR-OEIG1 sy-vline 
WA_T033C_STR-OEIG2 sy-vline 
WA_T033C_STR-OEIG3 sy-vline 
WA_T033C_STR-OEIG4 sy-vline 
WA_T033C_STR-LEIG1 sy-vline 
WA_T033C_STR-LEIG2 sy-vline 
WA_T033C_STR-LEIG3 sy-vline 
WA_T033C_STR-LEIG4 sy-vline 
WA_T033C_STR-TNAM1 sy-vline 
WA_T033C_STR-TNAM2 sy-vline 
WA_T033C_STR-TNAM3 sy-vline 
WA_T033C_STR-TNAM4 sy-vline 
WA_T033C_STR-FNAM1 sy-vline 
WA_T033C_STR-FNAM2 sy-vline 
WA_T033C_STR-FNAM3 sy-vline 
WA_T033C_STR-FNAM4 sy-vline 
WA_T033C_STR-XMOD1 sy-vline 
WA_T033C_STR-XMOD2 sy-vline 
WA_T033C_STR-TNAM5 sy-vline 
WA_T033C_STR-TNAM6 sy-vline 
WA_T033C_STR-FNAM5 sy-vline 
WA_T033C_STR-FNAM6 sy-vline 
WA_T033C_STR-TNAM7 sy-vline 
WA_T033C_STR-FNAM7 sy-vline 
WA_T033C_STR-LEIG7 sy-vline 
WA_T033C_STR-TNAM8 sy-vline 
WA_T033C_STR-FNAM8 sy-vline 
WA_T033C_STR-LEIG8 sy-vline 
WA_T033C_STR-FUNCNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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