ABAP Select data from SAP table /SAPAPO/BWEX_EXMP 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 /SAPAPO/BWEX_EXMP 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 /SAPAPO/BWEX_EXMP. 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 /SAPAPO/BWEX_EXMP 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_/SAPAPO/BWEX_EXMP TYPE STANDARD TABLE OF /SAPAPO/BWEX_EXMP,
      WA_/SAPAPO/BWEX_EXMP TYPE /SAPAPO/BWEX_EXMP,
      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: </SAPAPO/BWEX_EXMP> TYPE /SAPAPO/BWEX_EXMP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/BWEX_EXMP
  INTO TABLE IT_/SAPAPO/BWEX_EXMP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/BWEX_EXMP
*  INTO TABLE @DATA(IT_/SAPAPO/BWEX_EXMP2).
*--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_/SAPAPO/BWEX_EXMP INDEX 1 INTO DATA(WA_/SAPAPO/BWEX_EXMP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/BWEX_EXMP ASSIGNING </SAPAPO/BWEX_EXMP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/BWEX_EXMP>-FIELDNM = 1.
</SAPAPO/BWEX_EXMP>-OFFSET = 1.
</SAPAPO/BWEX_EXMP>-LENG = 1.
</SAPAPO/BWEX_EXMP>-INPEXTRACTOR = 1.
</SAPAPO/BWEX_EXMP>-INPFIELDNM = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/BWEX_EXMP INTO WA_/SAPAPO/BWEX_EXMP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/BWEX_EXMP-INPOFFSET, sy-vline,
  WA_/SAPAPO/BWEX_EXMP-INPLENG, sy-vline,
  WA_/SAPAPO/BWEX_EXMP-INTEXTFLG, sy-vline,
  WA_/SAPAPO/BWEX_EXMP-OBJTYPE, sy-vline,
  WA_/SAPAPO/BWEX_EXMP-COMPFLG, sy-vline,
  WA_/SAPAPO/BWEX_EXMP-CHAFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/BWEX_EXMP 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_/SAPAPO/BWEX_EXMP 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_/SAPAPO/BWEX_EXMP INTO WA_/SAPAPO/BWEX_EXMP.


*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_/SAPAPO/BWEX_EXMP_STR, 
FIELDNM TYPE STRING,
OFFSET TYPE STRING,
LENG TYPE STRING,
INPEXTRACTOR TYPE STRING,
INPFIELDNM TYPE STRING,
INPOFFSET TYPE STRING,
INPLENG TYPE STRING,
INTEXTFLG TYPE STRING,
OBJTYPE TYPE STRING,
COMPFLG TYPE STRING,
CHAFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/BWEX_EXMP_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_/SAPAPO/BWEX_EXMP_STR-FIELDNM sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-OFFSET sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-LENG sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-INPEXTRACTOR sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-INPFIELDNM sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-INPOFFSET sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-INPLENG sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-INTEXTFLG sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-OBJTYPE sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-COMPFLG sy-vline 
WA_/SAPAPO/BWEX_EXMP_STR-CHAFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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