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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIF/SWITCH_TRANSPORTS
*  INTO TABLE @DATA(IT_/AIF/SWITCH_TRANSPORTS2).
*--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_/AIF/SWITCH_TRANSPORTS INDEX 1 INTO DATA(WA_/AIF/SWITCH_TRANSPORTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIF/SWITCH_TRANSPORTS>-AS4TEXT = 1.
</AIF/SWITCH_TRANSPORTS>-TRKORR070 = 1.
</AIF/SWITCH_TRANSPORTS>-TRFUNCTION070 = 1.
</AIF/SWITCH_TRANSPORTS>-TRSTATUS070 = 1.
</AIF/SWITCH_TRANSPORTS>-TARSYSTEM070 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIF/SWITCH_TRANSPORTS-KORRDEV070, sy-vline,
  WA_/AIF/SWITCH_TRANSPORTS-AS4USER070, sy-vline,
  WA_/AIF/SWITCH_TRANSPORTS-AS4DATE070, sy-vline,
  WA_/AIF/SWITCH_TRANSPORTS-AS4TIME070, sy-vline,
  WA_/AIF/SWITCH_TRANSPORTS-STRKORR070, sy-vline,
  WA_/AIF/SWITCH_TRANSPORTS-TOPICIDTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIF/SWITCH_TRANSPORTS 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_/AIF/SWITCH_TRANSPORTS 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_/AIF/SWITCH_TRANSPORTS INTO WA_/AIF/SWITCH_TRANSPORTS.


*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 ISOLA, internal->external for field SPRASTXT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/SWITCH_TRANSPORTS-SPRASTXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/SWITCH_TRANSPORTS-SPRASTXT.
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_/AIF/SWITCH_TRANSPORTS_STR, 
AS4TEXT TYPE STRING,
TRKORR070 TYPE STRING,
TRFUNCTION070 TYPE STRING,
TRSTATUS070 TYPE STRING,
TARSYSTEM070 TYPE STRING,
KORRDEV070 TYPE STRING,
AS4USER070 TYPE STRING,
AS4DATE070 TYPE STRING,
AS4TIME070 TYPE STRING,
STRKORR070 TYPE STRING,
TOPICIDTR TYPE STRING,
TRANSPORTTR TYPE STRING,
LASTUSERTR TYPE STRING,
LASTDATETR TYPE STRING,
LASTTIMETR TYPE STRING,
TOPICIDDEF TYPE STRING,
GLOBALSTATUSDEF TYPE STRING,
NEWDEVPROJDEF TYPE STRING,
NEWDEVNUMBERDEF TYPE STRING,
TICKETNUMBERDEF TYPE STRING,
LASTUSERDEF TYPE STRING,
LASTDATEDEF TYPE STRING,
LASTTIMEDEF TYPE STRING,
TOPICIDTXT TYPE STRING,
SPRASTXT TYPE STRING,
DESCRIPTIONTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIF/SWITCH_TRANSPORTS_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_/AIF/SWITCH_TRANSPORTS_STR-AS4TEXT sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TRKORR070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TRFUNCTION070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TRSTATUS070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TARSYSTEM070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-KORRDEV070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-AS4USER070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-AS4DATE070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-AS4TIME070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-STRKORR070 sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TOPICIDTR sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TRANSPORTTR sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTUSERTR sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTDATETR sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTTIMETR sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TOPICIDDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-GLOBALSTATUSDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-NEWDEVPROJDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-NEWDEVNUMBERDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TICKETNUMBERDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTUSERDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTDATEDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-LASTTIMEDEF sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-TOPICIDTXT sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-SPRASTXT sy-vline 
WA_/AIF/SWITCH_TRANSPORTS_STR-DESCRIPTIONTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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