ABAP Select data from SAP table /SAPAPO/DRPMCHNG_COMPARE_STR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/DRPMCHNG_COMPARE_STR 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/DRPMCHNG_COMPARE_STR. 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/DRPMCHNG_COMPARE_STR 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/DRPMCHNG_COMPARE_STR TYPE STANDARD TABLE OF /SAPAPO/DRPMCHNG_COMPARE_STR,
      WA_/SAPAPO/DRPMCHNG_COMPARE_STR TYPE /SAPAPO/DRPMCHNG_COMPARE_STR,
      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/DRPMCHNG_COMPARE_STR> TYPE /SAPAPO/DRPMCHNG_COMPARE_STR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/DRPMCHNG_COMPARE_STR
*  INTO TABLE @DATA(IT_/SAPAPO/DRPMCHNG_COMPARE_STR2).
*--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/DRPMCHNG_COMPARE_STR INDEX 1 INTO DATA(WA_/SAPAPO/DRPMCHNG_COMPARE_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/DRPMCHNG_COMPARE_STR>-VRSIOID = 1.
</SAPAPO/DRPMCHNG_COMPARE_STR>-ORDID = 1.
</SAPAPO/DRPMCHNG_COMPARE_STR>-SDLID = 1.
</SAPAPO/DRPMCHNG_COMPARE_STR>-BZQID = 1.
</SAPAPO/DRPMCHNG_COMPARE_STR>-MATID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/DRPMCHNG_COMPARE_STR-LOCIDTO, sy-vline,
  WA_/SAPAPO/DRPMCHNG_COMPARE_STR-LOCIDFROM, sy-vline,
  WA_/SAPAPO/DRPMCHNG_COMPARE_STR-ORDNO, sy-vline,
  WA_/SAPAPO/DRPMCHNG_COMPARE_STR-ITEMNO, sy-vline,
  WA_/SAPAPO/DRPMCHNG_COMPARE_STR-SCHEDNO, sy-vline,
  WA_/SAPAPO/DRPMCHNG_COMPARE_STR-APPRVL_STATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/DRPMCHNG_COMPARE_STR 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/DRPMCHNG_COMPARE_STR 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/DRPMCHNG_COMPARE_STR INTO WA_/SAPAPO/DRPMCHNG_COMPARE_STR.


*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/DRPMCHNG_COMPARE_STR_STR, 
VRSIOID TYPE STRING,
ORDID TYPE STRING,
SDLID TYPE STRING,
BZQID TYPE STRING,
MATID TYPE STRING,
LOCIDTO TYPE STRING,
LOCIDFROM TYPE STRING,
ORDNO TYPE STRING,
ITEMNO TYPE STRING,
SCHEDNO TYPE STRING,
APPRVL_STATE TYPE STRING,
ORDTYPE TYPE STRING,
CHANGED_BY TYPE STRING,
ORIGQTY TYPE STRING,
GI_TIME TYPE STRING,
GR_TIME TYPE STRING,
AVAIL_TIME TYPE STRING,
SUPPLIER_BUYTYPE_CODE TYPE STRING,
TTYPE TYPE STRING,
BATCH_TO TYPE STRING,
BATCH_FROM TYPE STRING,
STORAGELOC_TO TYPE STRING,
STORAGELOC_FROM TYPE STRING,
DEP_DEM_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/DRPMCHNG_COMPARE_STR_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/DRPMCHNG_COMPARE_STR_STR-VRSIOID sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-ORDID sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-SDLID sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-BZQID sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-MATID sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-LOCIDTO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-LOCIDFROM sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-ORDNO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-ITEMNO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-SCHEDNO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-APPRVL_STATE sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-ORDTYPE sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-CHANGED_BY sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-ORIGQTY sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-GI_TIME sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-GR_TIME sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-AVAIL_TIME sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-SUPPLIER_BUYTYPE_CODE sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-TTYPE sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-BATCH_TO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-BATCH_FROM sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-STORAGELOC_TO sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-STORAGELOC_FROM sy-vline 
WA_/SAPAPO/DRPMCHNG_COMPARE_STR_STR-DEP_DEM_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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