ABAP Select data from SAP table T508A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T508A 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 T508A. 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 T508A 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_T508A TYPE STANDARD TABLE OF T508A,
      WA_T508A TYPE T508A,
      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: <T508A> TYPE T508A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T508A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T508A
  INTO TABLE IT_T508A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T508A
*  INTO TABLE @DATA(IT_T508A2).
*--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_T508A INDEX 1 INTO DATA(WA_T508A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T508A ASSIGNING <T508A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T508A>-MANDT = 1.
<T508A>-ZEITY = 1.
<T508A>-MOFID = 1.
<T508A>-MOSID = 1.
<T508A>-SCHKZ = 1.

ENDLOOP.

LOOP AT IT_T508A INTO WA_T508A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T508A-ENDDA, sy-vline,
  WA_T508A-BEGDA, sy-vline,
  WA_T508A-KUGKZ, sy-vline,
  WA_T508A-SCHZU, sy-vline,
  WA_T508A-ZMODN, sy-vline,
  WA_T508A-KUGKN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T508A 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_T508A 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_T508A INTO WA_T508A.


*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_T508A_STR, 
MANDT TYPE STRING,
ZEITY TYPE STRING,
MOFID TYPE STRING,
MOSID TYPE STRING,
SCHKZ TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
KUGKZ TYPE STRING,
SCHZU TYPE STRING,
ZMODN TYPE STRING,
KUGKN TYPE STRING,
KKRKH TYPE STRING,
BZPKT TYPE STRING,
OFFBZ TYPE STRING,
MOTPR TYPE STRING,
MOTTY TYPE STRING,
TGSTD TYPE STRING,
WOSTD TYPE STRING,
M1STD TYPE STRING,
M2STD TYPE STRING,
WKWDY TYPE STRING,
JRSTD TYPE STRING,
STABY TYPE STRING,
GENWS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T508A_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_T508A_STR-MANDT sy-vline 
WA_T508A_STR-ZEITY sy-vline 
WA_T508A_STR-MOFID sy-vline 
WA_T508A_STR-MOSID sy-vline 
WA_T508A_STR-SCHKZ sy-vline 
WA_T508A_STR-ENDDA sy-vline 
WA_T508A_STR-BEGDA sy-vline 
WA_T508A_STR-KUGKZ sy-vline 
WA_T508A_STR-SCHZU sy-vline 
WA_T508A_STR-ZMODN sy-vline 
WA_T508A_STR-KUGKN sy-vline 
WA_T508A_STR-KKRKH sy-vline 
WA_T508A_STR-BZPKT sy-vline 
WA_T508A_STR-OFFBZ sy-vline 
WA_T508A_STR-MOTPR sy-vline 
WA_T508A_STR-MOTTY sy-vline 
WA_T508A_STR-TGSTD sy-vline 
WA_T508A_STR-WOSTD sy-vline 
WA_T508A_STR-M1STD sy-vline 
WA_T508A_STR-M2STD sy-vline 
WA_T508A_STR-WKWDY sy-vline 
WA_T508A_STR-JRSTD sy-vline 
WA_T508A_STR-STABY sy-vline 
WA_T508A_STR-GENWS sy-vline      INTO ld_text SEPARATED BY SPACE.

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