ABAP Select data from SAP table IASSGMTIMETHSPEC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IASSGMTIMETHSPEC 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 IASSGMTIMETHSPEC. 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 IASSGMTIMETHSPEC 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_IASSGMTIMETHSPEC TYPE STANDARD TABLE OF IASSGMTIMETHSPEC,
      WA_IASSGMTIMETHSPEC TYPE IASSGMTIMETHSPEC,
      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: <IASSGMTIMETHSPEC> TYPE IASSGMTIMETHSPEC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IASSGMTIMETHSPEC
*  INTO TABLE @DATA(IT_IASSGMTIMETHSPEC2).
*--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_IASSGMTIMETHSPEC INDEX 1 INTO DATA(WA_IASSGMTIMETHSPEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IASSGMTIMETHSPEC>-MANDT = 1.
<IASSGMTIMETHSPEC>-INSPECTIONSPECIFICATIONPLANT = 1.
<IASSGMTIMETHSPEC>-INSPECTIONSPECIFICATION = 1.
<IASSGMTIMETHSPEC>-INSPECTIONSPECIFICATIONVERSION = 1.
<IASSGMTIMETHSPEC>-INSPECTIONMETHODPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IASSGMTIMETHSPEC-INSPECTIONMETHOD, sy-vline,
  WA_IASSGMTIMETHSPEC-INSPECTIONMETHODVERSION, sy-vline,
  WA_IASSGMTIMETHSPEC-PLANT, sy-vline,
  WA_IASSGMTIMETHSPEC-VALIDITYSTARTDATE, sy-vline,
  WA_IASSGMTIMETHSPEC-SELECTEDCODESET, sy-vline,
  WA_IASSGMTIMETHSPEC-SELECTEDCODESETPLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IASSGMTIMETHSPEC 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_IASSGMTIMETHSPEC 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_IASSGMTIMETHSPEC INTO WA_IASSGMTIMETHSPEC.


*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 ALPHA, internal->external for field INSPECTIONSPECIFICATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IASSGMTIMETHSPEC-INSPECTIONSPECIFICATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IASSGMTIMETHSPEC-INSPECTIONSPECIFICATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPECTIONSPECIFICATIONVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IASSGMTIMETHSPEC-INSPECTIONSPECIFICATIONVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IASSGMTIMETHSPEC-INSPECTIONSPECIFICATIONVERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPECTIONMETHOD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IASSGMTIMETHSPEC-INSPECTIONMETHOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IASSGMTIMETHSPEC-INSPECTIONMETHOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPECTIONMETHODVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IASSGMTIMETHSPEC-INSPECTIONMETHODVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IASSGMTIMETHSPEC-INSPECTIONMETHODVERSION.
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_IASSGMTIMETHSPEC_STR, 
MANDT TYPE STRING,
INSPECTIONSPECIFICATIONPLANT TYPE STRING,
INSPECTIONSPECIFICATION TYPE STRING,
INSPECTIONSPECIFICATIONVERSION TYPE STRING,
INSPECTIONMETHODPLANT TYPE STRING,
INSPECTIONMETHOD TYPE STRING,
INSPECTIONMETHODVERSION TYPE STRING,
PLANT TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
SELECTEDCODESET TYPE STRING,
SELECTEDCODESETPLANT TYPE STRING,
INSPSPECADDITIONALCATALOG2 TYPE STRING,
INSPSPECADDITIONALSELECTEDSET2 TYPE STRING,
INSPSPECADDITIONALCODEGROUP2 TYPE STRING,
INSPSPECADDLSELDCODESETPLANT2 TYPE STRING,
INSPSPECADDITIONALCATALOG3 TYPE STRING,
INSPSPECADDITIONALSELECTEDSET3 TYPE STRING,
INSPSPECADDITIONALCODEGROUP3 TYPE STRING,
INSPSPECADDLSELDCODESETPLANT3 TYPE STRING,
INSPSPECADDITIONALCATALOG4 TYPE STRING,
INSPSPECADDITIONALSELECTEDSET4 TYPE STRING,
INSPSPECADDITIONALCODEGROUP4 TYPE STRING,
INSPSPECADDLSELDCODESETPLANT4 TYPE STRING,
INSPSPECADDITIONALCATALOG5 TYPE STRING,
INSPSPECADDITIONALSELECTEDSET5 TYPE STRING,
INSPSPECADDITIONALCODEGROUP5 TYPE STRING,
INSPSPECADDLSELDCODESETPLANT5 TYPE STRING,
INSPMETHISASSGMTTOSPECINACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IASSGMTIMETHSPEC_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_IASSGMTIMETHSPEC_STR-MANDT sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONSPECIFICATIONPLANT sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONSPECIFICATION sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONSPECIFICATIONVERSION sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONMETHODPLANT sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONMETHOD sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPECTIONMETHODVERSION sy-vline 
WA_IASSGMTIMETHSPEC_STR-PLANT sy-vline 
WA_IASSGMTIMETHSPEC_STR-VALIDITYSTARTDATE sy-vline 
WA_IASSGMTIMETHSPEC_STR-SELECTEDCODESET sy-vline 
WA_IASSGMTIMETHSPEC_STR-SELECTEDCODESETPLANT sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCATALOG2 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALSELECTEDSET2 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCODEGROUP2 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDLSELDCODESETPLANT2 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCATALOG3 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALSELECTEDSET3 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCODEGROUP3 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDLSELDCODESETPLANT3 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCATALOG4 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALSELECTEDSET4 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCODEGROUP4 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDLSELDCODESETPLANT4 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCATALOG5 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALSELECTEDSET5 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDITIONALCODEGROUP5 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPSPECADDLSELDCODESETPLANT5 sy-vline 
WA_IASSGMTIMETHSPEC_STR-INSPMETHISASSGMTTOSPECINACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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