ABAP Select data from SAP table ISU_EXT_POS 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 ISU_EXT_POS 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 ISU_EXT_POS. 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 ISU_EXT_POS 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_ISU_EXT_POS TYPE STANDARD TABLE OF ISU_EXT_POS,
      WA_ISU_EXT_POS TYPE ISU_EXT_POS,
      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: <ISU_EXT_POS> TYPE ISU_EXT_POS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_EXT_POS
*  INTO TABLE @DATA(IT_ISU_EXT_POS2).
*--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_ISU_EXT_POS INDEX 1 INTO DATA(WA_ISU_EXT_POS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_EXT_POS>-CLIENT = 1.
<ISU_EXT_POS>-FRG_GUID = 1.
<ISU_EXT_POS>-VALID_FROM = 1.
<ISU_EXT_POS>-VALID_TO = 1.
<ISU_EXT_POS>-UPNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_EXT_POS-HISTEX, sy-vline,
  WA_ISU_EXT_POS-LOGSYS, sy-vline,
  WA_ISU_EXT_POS-ACTMSG, sy-vline,
  WA_ISU_EXT_POS-ACTSWTC, sy-vline,
  WA_ISU_EXT_POS-DEACTMSG, sy-vline,
  WA_ISU_EXT_POS-DEACTSWTC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_EXT_POS 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_ISU_EXT_POS 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_ISU_EXT_POS INTO WA_ISU_EXT_POS.


*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 TSTPS, internal->external for field VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EXT_POS-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EXT_POS-VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EXT_POS-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EXT_POS-VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EXT_POS-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EXT_POS-LOGSYS.
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_ISU_EXT_POS_STR, 
CLIENT TYPE STRING,
FRG_GUID TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
UPNAME TYPE STRING,
HISTEX TYPE STRING,
LOGSYS TYPE STRING,
ACTMSG TYPE STRING,
ACTSWTC TYPE STRING,
DEACTMSG TYPE STRING,
DEACTSWTC TYPE STRING,
ISUCNTRCT TYPE STRING,
REFNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_EXT_POS_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_ISU_EXT_POS_STR-CLIENT sy-vline 
WA_ISU_EXT_POS_STR-FRG_GUID sy-vline 
WA_ISU_EXT_POS_STR-VALID_FROM sy-vline 
WA_ISU_EXT_POS_STR-VALID_TO sy-vline 
WA_ISU_EXT_POS_STR-UPNAME sy-vline 
WA_ISU_EXT_POS_STR-HISTEX sy-vline 
WA_ISU_EXT_POS_STR-LOGSYS sy-vline 
WA_ISU_EXT_POS_STR-ACTMSG sy-vline 
WA_ISU_EXT_POS_STR-ACTSWTC sy-vline 
WA_ISU_EXT_POS_STR-DEACTMSG sy-vline 
WA_ISU_EXT_POS_STR-DEACTSWTC sy-vline 
WA_ISU_EXT_POS_STR-ISUCNTRCT sy-vline 
WA_ISU_EXT_POS_STR-REFNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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