ABAP Select data from SAP table ANSTRS38T_LIM2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ANSTRS38T_LIM2 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 ANSTRS38T_LIM2. 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 ANSTRS38T_LIM2 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_ANSTRS38T_LIM2 TYPE STANDARD TABLE OF ANSTRS38T_LIM2,
      WA_ANSTRS38T_LIM2 TYPE ANSTRS38T_LIM2,
      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: <ANSTRS38T_LIM2> TYPE ANSTRS38T_LIM2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ANSTRS38T_LIM2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ANSTRS38T_LIM2
  INTO TABLE IT_ANSTRS38T_LIM2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ANSTRS38T_LIM2
*  INTO TABLE @DATA(IT_ANSTRS38T_LIM22).
*--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_ANSTRS38T_LIM2 INDEX 1 INTO DATA(WA_ANSTRS38T_LIM22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ANSTRS38T_LIM2 ASSIGNING <ANSTRS38T_LIM2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ANSTRS38T_LIM2>-STAT = 1.
<ANSTRS38T_LIM2>-METH = 1.
<ANSTRS38T_LIM2>-EVNT = 1.
<ANSTRS38T_LIM2>-FORM = 1.
<ANSTRS38T_LIM2>-MODU = 1.

ENDLOOP.

LOOP AT IT_ANSTRS38T_LIM2 INTO WA_ANSTRS38T_LIM2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ANSTRS38T_LIM2-FUNC, sy-vline,
  WA_ANSTRS38T_LIM2-DYNE, sy-vline,
  WA_ANSTRS38T_LIM2-DIAG, sy-vline,
  WA_ANSTRS38T_LIM2-PROG, sy-vline,
  WA_ANSTRS38T_LIM2-SQLO, sy-vline,
  WA_ANSTRS38T_LIM2-SQLN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ANSTRS38T_LIM2 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_ANSTRS38T_LIM2 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_ANSTRS38T_LIM2 INTO WA_ANSTRS38T_LIM2.


*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_ANSTRS38T_LIM2_STR, 
STAT TYPE STRING,
METH TYPE STRING,
EVNT TYPE STRING,
FORM TYPE STRING,
MODU TYPE STRING,
FUNC TYPE STRING,
DYNE TYPE STRING,
DIAG TYPE STRING,
PROG TYPE STRING,
SQLO TYPE STRING,
SQLN TYPE STRING,
CNTX TYPE STRING,
GENE TYPE STRING,
LOA TYPE STRING,
TABR TYPE STRING,
TABU TYPE STRING,
MESS TYPE STRING,
DBOP TYPE STRING,
EXPO TYPE STRING,
MIX TYPE STRING,
DSET TYPE STRING,
RUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ANSTRS38T_LIM2_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_ANSTRS38T_LIM2_STR-STAT sy-vline 
WA_ANSTRS38T_LIM2_STR-METH sy-vline 
WA_ANSTRS38T_LIM2_STR-EVNT sy-vline 
WA_ANSTRS38T_LIM2_STR-FORM sy-vline 
WA_ANSTRS38T_LIM2_STR-MODU sy-vline 
WA_ANSTRS38T_LIM2_STR-FUNC sy-vline 
WA_ANSTRS38T_LIM2_STR-DYNE sy-vline 
WA_ANSTRS38T_LIM2_STR-DIAG sy-vline 
WA_ANSTRS38T_LIM2_STR-PROG sy-vline 
WA_ANSTRS38T_LIM2_STR-SQLO sy-vline 
WA_ANSTRS38T_LIM2_STR-SQLN sy-vline 
WA_ANSTRS38T_LIM2_STR-CNTX sy-vline 
WA_ANSTRS38T_LIM2_STR-GENE sy-vline 
WA_ANSTRS38T_LIM2_STR-LOA sy-vline 
WA_ANSTRS38T_LIM2_STR-TABR sy-vline 
WA_ANSTRS38T_LIM2_STR-TABU sy-vline 
WA_ANSTRS38T_LIM2_STR-MESS sy-vline 
WA_ANSTRS38T_LIM2_STR-DBOP sy-vline 
WA_ANSTRS38T_LIM2_STR-EXPO sy-vline 
WA_ANSTRS38T_LIM2_STR-MIX sy-vline 
WA_ANSTRS38T_LIM2_STR-DSET sy-vline 
WA_ANSTRS38T_LIM2_STR-RUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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