ABAP Select data from SAP table T437A 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 T437A 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 T437A. 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 T437A 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_T437A TYPE STANDARD TABLE OF T437A,
      WA_T437A TYPE T437A,
      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: <T437A> TYPE T437A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T437A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T437A
  INTO TABLE IT_T437A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T437A
*  INTO TABLE @DATA(IT_T437A2).
*--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_T437A INDEX 1 INTO DATA(WA_T437A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T437A ASSIGNING <T437A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T437A>-MANDT = 1.
<T437A>-LIPL1 = 1.
<T437A>-LIPL2 = 1.
<T437A>-AUFDU = 1.
<T437A>-ZTEXT = 1.

ENDLOOP.

LOOP AT IT_T437A INTO WA_T437A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T437A-SELHZ, sy-vline,
  WA_T437A-SELH1, sy-vline,
  WA_T437A-PLFDU, sy-vline,
  WA_T437A-ABBED, sy-vline,
  WA_T437A-ABVER, sy-vline,
  WA_T437A-ABREI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T437A 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_T437A 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_T437A INTO WA_T437A.


*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_T437A_STR, 
MANDT TYPE STRING,
LIPL1 TYPE STRING,
LIPL2 TYPE STRING,
AUFDU TYPE STRING,
ZTEXT TYPE STRING,
SELHZ TYPE STRING,
SELH1 TYPE STRING,
PLFDU TYPE STRING,
ABBED TYPE STRING,
ABVER TYPE STRING,
ABREI TYPE STRING,
ABAND TYPE STRING,
ABNZU TYPE STRING,
ABSZU TYPE STRING,
ABLFP TYPE STRING,
SVIEW TYPE STRING,
SELAB TYPE STRING,
SELBS TYPE STRING,
PATJN TYPE STRING,
PRDPL TYPE STRING,
ABVPB TYPE STRING,
ABSUZ TYPE STRING,
ABSUB TYPE STRING,
ABUEZ TYPE STRING,
PATVR TYPE STRING,
TEEKZ TYPE STRING,
KPFLG TYPE STRING,
ABKOM TYPE STRING,
ANZKA TYPE STRING,
JVIEW TYPE STRING,
KMIMA TYPE STRING,
MATDE TYPE STRING,
POST_SYNC TYPE STRING,
BACLA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T437A_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_T437A_STR-MANDT sy-vline 
WA_T437A_STR-LIPL1 sy-vline 
WA_T437A_STR-LIPL2 sy-vline 
WA_T437A_STR-AUFDU sy-vline 
WA_T437A_STR-ZTEXT sy-vline 
WA_T437A_STR-SELHZ sy-vline 
WA_T437A_STR-SELH1 sy-vline 
WA_T437A_STR-PLFDU sy-vline 
WA_T437A_STR-ABBED sy-vline 
WA_T437A_STR-ABVER sy-vline 
WA_T437A_STR-ABREI sy-vline 
WA_T437A_STR-ABAND sy-vline 
WA_T437A_STR-ABNZU sy-vline 
WA_T437A_STR-ABSZU sy-vline 
WA_T437A_STR-ABLFP sy-vline 
WA_T437A_STR-SVIEW sy-vline 
WA_T437A_STR-SELAB sy-vline 
WA_T437A_STR-SELBS sy-vline 
WA_T437A_STR-PATJN sy-vline 
WA_T437A_STR-PRDPL sy-vline 
WA_T437A_STR-ABVPB sy-vline 
WA_T437A_STR-ABSUZ sy-vline 
WA_T437A_STR-ABSUB sy-vline 
WA_T437A_STR-ABUEZ sy-vline 
WA_T437A_STR-PATVR sy-vline 
WA_T437A_STR-TEEKZ sy-vline 
WA_T437A_STR-KPFLG sy-vline 
WA_T437A_STR-ABKOM sy-vline 
WA_T437A_STR-ANZKA sy-vline 
WA_T437A_STR-JVIEW sy-vline 
WA_T437A_STR-KMIMA sy-vline 
WA_T437A_STR-MATDE sy-vline 
WA_T437A_STR-POST_SYNC sy-vline 
WA_T437A_STR-BACLA sy-vline      INTO ld_text SEPARATED BY SPACE.

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