ABAP Select data from SAP table IMPTH into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IMPTH 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 IMPTH. 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 IMPTH 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_IMPTH TYPE STANDARD TABLE OF IMPTH,
      WA_IMPTH TYPE IMPTH,
      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: <IMPTH> TYPE IMPTH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPTH
*  INTO TABLE @DATA(IT_IMPTH2).
*--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_IMPTH INDEX 1 INTO DATA(WA_IMPTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPTH>-MANDT = 1.
<IMPTH>-POINT = 1.
<IMPTH>-MPOBJ = 1.
<IMPTH>-PSORT = 1.
<IMPTH>-PSORTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPTH-PTTXT, sy-vline,
  WA_IMPTH-MLANG, sy-vline,
  WA_IMPTH-KZLTX, sy-vline,
  WA_IMPTH-MPTYP, sy-vline,
  WA_IMPTH-IRFMP, sy-vline,
  WA_IMPTH-ERDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPTH 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_IMPTH 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_IMPTH INTO WA_IMPTH.


*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 POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-POINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-MLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-MLANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field LOCAS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-LOCAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-LOCAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MRNGU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-MRNGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-MRNGU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMPTH-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPTH-MSEHI.
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_IMPTH_STR, 
MANDT TYPE STRING,
POINT TYPE STRING,
MPOBJ TYPE STRING,
PSORT TYPE STRING,
PSORTR TYPE STRING,
PTTXT TYPE STRING,
MLANG TYPE STRING,
KZLTX TYPE STRING,
MPTYP TYPE STRING,
IRFMP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
INACT TYPE STRING,
LVORM TYPE STRING,
LOCAS TYPE STRING,
REFMP TYPE STRING,
ATINN TYPE STRING,
ATINNR TYPE STRING,
EXPON TYPE STRING,
DECIM TYPE STRING,
DESIR TYPE STRING,
DESIRI TYPE STRING,
DESIRR TYPE STRING,
DSTXT TYPE STRING,
DSTXTR TYPE STRING,
MRMIN TYPE STRING,
MRMINI TYPE STRING,
MRMAX TYPE STRING,
MRMAXI TYPE STRING,
MRNGU TYPE STRING,
INDCT TYPE STRING,
INDRV TYPE STRING,
INDTR TYPE STRING,
TRANS TYPE STRING,
CJUMP TYPE STRING,
CJUMPI TYPE STRING,
PYEAR TYPE STRING,
PYEARI TYPE STRING,
CODCT TYPE STRING,
CODGR TYPE STRING,
CODGRR TYPE STRING,
CDSUF TYPE STRING,
MODTR TYPE STRING,
INDTRR TYPE STRING,
LOGSYS TYPE STRING,
LOGSYS_CHG TYPE STRING,
ATNAM TYPE STRING,
ATFOR TYPE STRING,
ATVOR TYPE STRING,
MSEHI TYPE STRING,
ATDIM TYPE STRING,
ANZDZ TYPE STRING,
AUSWAHLMGE TYPE STRING,
HILEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPTH_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_IMPTH_STR-MANDT sy-vline 
WA_IMPTH_STR-POINT sy-vline 
WA_IMPTH_STR-MPOBJ sy-vline 
WA_IMPTH_STR-PSORT sy-vline 
WA_IMPTH_STR-PSORTR sy-vline 
WA_IMPTH_STR-PTTXT sy-vline 
WA_IMPTH_STR-MLANG sy-vline 
WA_IMPTH_STR-KZLTX sy-vline 
WA_IMPTH_STR-MPTYP sy-vline 
WA_IMPTH_STR-IRFMP sy-vline 
WA_IMPTH_STR-ERDAT sy-vline 
WA_IMPTH_STR-ERNAM sy-vline 
WA_IMPTH_STR-AEDAT sy-vline 
WA_IMPTH_STR-AENAM sy-vline 
WA_IMPTH_STR-BEGRU sy-vline 
WA_IMPTH_STR-INACT sy-vline 
WA_IMPTH_STR-LVORM sy-vline 
WA_IMPTH_STR-LOCAS sy-vline 
WA_IMPTH_STR-REFMP sy-vline 
WA_IMPTH_STR-ATINN sy-vline 
WA_IMPTH_STR-ATINNR sy-vline 
WA_IMPTH_STR-EXPON sy-vline 
WA_IMPTH_STR-DECIM sy-vline 
WA_IMPTH_STR-DESIR sy-vline 
WA_IMPTH_STR-DESIRI sy-vline 
WA_IMPTH_STR-DESIRR sy-vline 
WA_IMPTH_STR-DSTXT sy-vline 
WA_IMPTH_STR-DSTXTR sy-vline 
WA_IMPTH_STR-MRMIN sy-vline 
WA_IMPTH_STR-MRMINI sy-vline 
WA_IMPTH_STR-MRMAX sy-vline 
WA_IMPTH_STR-MRMAXI sy-vline 
WA_IMPTH_STR-MRNGU sy-vline 
WA_IMPTH_STR-INDCT sy-vline 
WA_IMPTH_STR-INDRV sy-vline 
WA_IMPTH_STR-INDTR sy-vline 
WA_IMPTH_STR-TRANS sy-vline 
WA_IMPTH_STR-CJUMP sy-vline 
WA_IMPTH_STR-CJUMPI sy-vline 
WA_IMPTH_STR-PYEAR sy-vline 
WA_IMPTH_STR-PYEARI sy-vline 
WA_IMPTH_STR-CODCT sy-vline 
WA_IMPTH_STR-CODGR sy-vline 
WA_IMPTH_STR-CODGRR sy-vline 
WA_IMPTH_STR-CDSUF sy-vline 
WA_IMPTH_STR-MODTR sy-vline 
WA_IMPTH_STR-INDTRR sy-vline 
WA_IMPTH_STR-LOGSYS sy-vline 
WA_IMPTH_STR-LOGSYS_CHG sy-vline 
WA_IMPTH_STR-ATNAM sy-vline 
WA_IMPTH_STR-ATFOR sy-vline 
WA_IMPTH_STR-ATVOR sy-vline 
WA_IMPTH_STR-MSEHI sy-vline 
WA_IMPTH_STR-ATDIM sy-vline 
WA_IMPTH_STR-ANZDZ sy-vline 
WA_IMPTH_STR-AUSWAHLMGE sy-vline 
WA_IMPTH_STR-HILEV sy-vline      INTO ld_text SEPARATED BY SPACE.

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