ABAP Select data from SAP table T377X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T377X 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 T377X. 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 T377X 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_T377X TYPE STANDARD TABLE OF T377X,
      WA_T377X TYPE T377X,
      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: <T377X> TYPE T377X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T377X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T377X
  INTO TABLE IT_T377X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T377X
*  INTO TABLE @DATA(IT_T377X2).
*--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_T377X INDEX 1 INTO DATA(WA_T377X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T377X ASSIGNING <T377X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T377X>-MANDT = 1.
<T377X>-BELEG = 1.
<T377X>-ARBGEB = 1.
<T377X>-OBJKOPF = 1.
<T377X>-DUNKEL = 1.

ENDLOOP.

LOOP AT IT_T377X INTO WA_T377X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T377X-RETOUR, sy-vline,
  WA_T377X-FORM, sy-vline,
  WA_T377X-PFLEGE, sy-vline,
  WA_T377X-ACTIVITY, sy-vline,
  WA_T377X-DEBITOR, sy-vline,
  WA_T377X-DOCUMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T377X 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_T377X 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_T377X INTO WA_T377X.


*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_T377X_STR, 
MANDT TYPE STRING,
BELEG TYPE STRING,
ARBGEB TYPE STRING,
OBJKOPF TYPE STRING,
DUNKEL TYPE STRING,
RETOUR TYPE STRING,
FORM TYPE STRING,
PFLEGE TYPE STRING,
ACTIVITY TYPE STRING,
DEBITOR TYPE STRING,
DOCUMENT TYPE STRING,
ITEM TYPE STRING,
KMATNR TYPE STRING,
MATERIAL TYPE STRING,
OPERATION TYPE STRING,
PROFILE TYPE STRING,
QUANTITY TYPE STRING,
DOC_OLD TYPE STRING,
DOC_NEW TYPE STRING,
PRUEFLOS TYPE STRING,
QM_DOC_OLD TYPE STRING,
QM_DOC_NEW TYPE STRING,
MBLNR TYPE STRING,
MJAHR_NEW TYPE STRING,
MJAHR TYPE STRING,
ZEILE_NEW TYPE STRING,
ZEILE TYPE STRING,
BLART TYPE STRING,
BWART TYPE STRING,
SHKZG TYPE STRING,
LIEFERANT TYPE STRING,
M_WERK TYPE STRING,
M_LAGER TYPE STRING,
M_CHARGE TYPE STRING,
MBLNR_OLD TYPE STRING,
J_VORGANG TYPE STRING,
LIEFPOS_NE TYPE STRING,
CUOBJ TYPE STRING,
R_MATERIAL TYPE STRING,
BSTCH TYPE STRING,
BSTUP TYPE STRING,
SNBWG TYPE STRING,
PPAUFNR TYPE STRING,
PPPOSNR TYPE STRING,
PPAUTYP TYPE STRING,
PPAUFART TYPE STRING,
PPAUFNR_NE TYPE STRING,
PMRSORD TYPE STRING,
AUTOMATIC TYPE STRING,
VBTYP TYPE STRING,
SD_AUART TYPE STRING,
SD_POSTYP TYPE STRING,
EMATN TYPE STRING,
STORNO_LF TYPE STRING,
BAPI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T377X_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_T377X_STR-MANDT sy-vline 
WA_T377X_STR-BELEG sy-vline 
WA_T377X_STR-ARBGEB sy-vline 
WA_T377X_STR-OBJKOPF sy-vline 
WA_T377X_STR-DUNKEL sy-vline 
WA_T377X_STR-RETOUR sy-vline 
WA_T377X_STR-FORM sy-vline 
WA_T377X_STR-PFLEGE sy-vline 
WA_T377X_STR-ACTIVITY sy-vline 
WA_T377X_STR-DEBITOR sy-vline 
WA_T377X_STR-DOCUMENT sy-vline 
WA_T377X_STR-ITEM sy-vline 
WA_T377X_STR-KMATNR sy-vline 
WA_T377X_STR-MATERIAL sy-vline 
WA_T377X_STR-OPERATION sy-vline 
WA_T377X_STR-PROFILE sy-vline 
WA_T377X_STR-QUANTITY sy-vline 
WA_T377X_STR-DOC_OLD sy-vline 
WA_T377X_STR-DOC_NEW sy-vline 
WA_T377X_STR-PRUEFLOS sy-vline 
WA_T377X_STR-QM_DOC_OLD sy-vline 
WA_T377X_STR-QM_DOC_NEW sy-vline 
WA_T377X_STR-MBLNR sy-vline 
WA_T377X_STR-MJAHR_NEW sy-vline 
WA_T377X_STR-MJAHR sy-vline 
WA_T377X_STR-ZEILE_NEW sy-vline 
WA_T377X_STR-ZEILE sy-vline 
WA_T377X_STR-BLART sy-vline 
WA_T377X_STR-BWART sy-vline 
WA_T377X_STR-SHKZG sy-vline 
WA_T377X_STR-LIEFERANT sy-vline 
WA_T377X_STR-M_WERK sy-vline 
WA_T377X_STR-M_LAGER sy-vline 
WA_T377X_STR-M_CHARGE sy-vline 
WA_T377X_STR-MBLNR_OLD sy-vline 
WA_T377X_STR-J_VORGANG sy-vline 
WA_T377X_STR-LIEFPOS_NE sy-vline 
WA_T377X_STR-CUOBJ sy-vline 
WA_T377X_STR-R_MATERIAL sy-vline 
WA_T377X_STR-BSTCH sy-vline 
WA_T377X_STR-BSTUP sy-vline 
WA_T377X_STR-SNBWG sy-vline 
WA_T377X_STR-PPAUFNR sy-vline 
WA_T377X_STR-PPPOSNR sy-vline 
WA_T377X_STR-PPAUTYP sy-vline 
WA_T377X_STR-PPAUFART sy-vline 
WA_T377X_STR-PPAUFNR_NE sy-vline 
WA_T377X_STR-PMRSORD sy-vline 
WA_T377X_STR-AUTOMATIC sy-vline 
WA_T377X_STR-VBTYP sy-vline 
WA_T377X_STR-SD_AUART sy-vline 
WA_T377X_STR-SD_POSTYP sy-vline 
WA_T377X_STR-EMATN sy-vline 
WA_T377X_STR-STORNO_LF sy-vline 
WA_T377X_STR-BAPI sy-vline      INTO ld_text SEPARATED BY SPACE.

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