ABAP Select data from SAP table BAPITABSTR 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 BAPITABSTR 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 BAPITABSTR. 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 BAPITABSTR 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_BAPITABSTR TYPE STANDARD TABLE OF BAPITABSTR,
      WA_BAPITABSTR TYPE BAPITABSTR,
      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: <BAPITABSTR> TYPE BAPITABSTR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPITABSTR
*  INTO TABLE @DATA(IT_BAPITABSTR2).
*--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_BAPITABSTR INDEX 1 INTO DATA(WA_BAPITABSTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPITABSTR>-TABNAME = 1.
<BAPITABSTR>-FIELDNAME = 1.
<BAPITABSTR>-POSITION = 1.
<BAPITABSTR>-OFFSET = 1.
<BAPITABSTR>-KEYFLAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPITABSTR-ROLLNAME, sy-vline,
  WA_BAPITABSTR-CHECKTABLE, sy-vline,
  WA_BAPITABSTR-INTTYPE, sy-vline,
  WA_BAPITABSTR-INTLEN, sy-vline,
  WA_BAPITABSTR-DATATYPE, sy-vline,
  WA_BAPITABSTR-LENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPITABSTR 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_BAPITABSTR 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_BAPITABSTR INTO WA_BAPITABSTR.


*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.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_BAPITABSTR-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITABSTR-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field DDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BAPITABSTR-DDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPITABSTR-DDLANGUAGE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BAPITABSTR_STR, 
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
POSITION TYPE STRING,
OFFSET TYPE STRING,
KEYFLAG TYPE STRING,
ROLLNAME TYPE STRING,
CHECKTABLE TYPE STRING,
INTTYPE TYPE STRING,
INTLEN TYPE STRING,
DATATYPE TYPE STRING,
LENG TYPE STRING,
DECIMALS TYPE STRING,
DOMNAME TYPE STRING,
SPRASKEY TYPE STRING,
SPRASPOS TYPE STRING,
CURRKEY TYPE STRING,
CURRPOS TYPE STRING,
FIELDTEXT TYPE STRING,
DDLANGUAGE TYPE STRING,
OUTPUTLEN TYPE STRING,
COMPTYPE TYPE STRING,
APPLCLASS TYPE STRING,
DDTEXT TYPE STRING,
TABCLASS TYPE STRING,
LANGUFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPITABSTR_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_BAPITABSTR_STR-TABNAME sy-vline 
WA_BAPITABSTR_STR-FIELDNAME sy-vline 
WA_BAPITABSTR_STR-POSITION sy-vline 
WA_BAPITABSTR_STR-OFFSET sy-vline 
WA_BAPITABSTR_STR-KEYFLAG sy-vline 
WA_BAPITABSTR_STR-ROLLNAME sy-vline 
WA_BAPITABSTR_STR-CHECKTABLE sy-vline 
WA_BAPITABSTR_STR-INTTYPE sy-vline 
WA_BAPITABSTR_STR-INTLEN sy-vline 
WA_BAPITABSTR_STR-DATATYPE sy-vline 
WA_BAPITABSTR_STR-LENG sy-vline 
WA_BAPITABSTR_STR-DECIMALS sy-vline 
WA_BAPITABSTR_STR-DOMNAME sy-vline 
WA_BAPITABSTR_STR-SPRASKEY sy-vline 
WA_BAPITABSTR_STR-SPRASPOS sy-vline 
WA_BAPITABSTR_STR-CURRKEY sy-vline 
WA_BAPITABSTR_STR-CURRPOS sy-vline 
WA_BAPITABSTR_STR-FIELDTEXT sy-vline 
WA_BAPITABSTR_STR-DDLANGUAGE sy-vline 
WA_BAPITABSTR_STR-OUTPUTLEN sy-vline 
WA_BAPITABSTR_STR-COMPTYPE sy-vline 
WA_BAPITABSTR_STR-APPLCLASS sy-vline 
WA_BAPITABSTR_STR-DDTEXT sy-vline 
WA_BAPITABSTR_STR-TABCLASS sy-vline 
WA_BAPITABSTR_STR-LANGUFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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