ABAP Select data from SAP table WISP_CM_HIETAB_1_CM_PM_4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WISP_CM_HIETAB_1_CM_PM_4 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 WISP_CM_HIETAB_1_CM_PM_4. 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 WISP_CM_HIETAB_1_CM_PM_4 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_WISP_CM_HIETAB_1_CM_PM_4 TYPE STANDARD TABLE OF WISP_CM_HIETAB_1_CM_PM_4,
      WA_WISP_CM_HIETAB_1_CM_PM_4 TYPE WISP_CM_HIETAB_1_CM_PM_4,
      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: <WISP_CM_HIETAB_1_CM_PM_4> TYPE WISP_CM_HIETAB_1_CM_PM_4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WISP_CM_HIETAB_1_CM_PM_4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WISP_CM_HIETAB_1_CM_PM_4
  INTO TABLE IT_WISP_CM_HIETAB_1_CM_PM_4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISP_CM_HIETAB_1_CM_PM_4
*  INTO TABLE @DATA(IT_WISP_CM_HIETAB_1_CM_PM_42).
*--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_WISP_CM_HIETAB_1_CM_PM_4 INDEX 1 INTO DATA(WA_WISP_CM_HIETAB_1_CM_PM_42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WISP_CM_HIETAB_1_CM_PM_4 ASSIGNING <WISP_CM_HIETAB_1_CM_PM_4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISP_CM_HIETAB_1_CM_PM_4>-PLHVS = 1.
<WISP_CM_HIETAB_1_CM_PM_4>-HIER_ID = 1.
<WISP_CM_HIETAB_1_CM_PM_4>-CDT1 = 1.
<WISP_CM_HIETAB_1_CM_PM_4>-CDT2 = 1.
<WISP_CM_HIETAB_1_CM_PM_4>-CDT3 = 1.

ENDLOOP.

LOOP AT IT_WISP_CM_HIETAB_1_CM_PM_4 INTO WA_WISP_CM_HIETAB_1_CM_PM_4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISP_CM_HIETAB_1_CM_PM_4-CDT4, sy-vline,
  WA_WISP_CM_HIETAB_1_CM_PM_4-RELEF1, sy-vline,
  WA_WISP_CM_HIETAB_1_CM_PM_4-RELEF2, sy-vline,
  WA_WISP_CM_HIETAB_1_CM_PM_4-RELEF3, sy-vline,
  WA_WISP_CM_HIETAB_1_CM_PM_4-PRODF1, sy-vline,
  WA_WISP_CM_HIETAB_1_CM_PM_4-PRODF2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WISP_CM_HIETAB_1_CM_PM_4 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_WISP_CM_HIETAB_1_CM_PM_4 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_WISP_CM_HIETAB_1_CM_PM_4 INTO WA_WISP_CM_HIETAB_1_CM_PM_4.


*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 PLHVS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_CM_HIETAB_1_CM_PM_4-PLHVS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_CM_HIETAB_1_CM_PM_4-PLHVS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PLMHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WISP_CM_HIETAB_1_CM_PM_4-PLMHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_CM_HIETAB_1_CM_PM_4-PLMHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WISP_CM_HIETAB_1_CM_PM_4-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_CM_HIETAB_1_CM_PM_4-BASME.
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_WISP_CM_HIETAB_1_CM_PM_4_STR, 
PLHVS TYPE STRING,
HIER_ID TYPE STRING,
CDT1 TYPE STRING,
CDT2 TYPE STRING,
CDT3 TYPE STRING,
CDT4 TYPE STRING,
RELEF1 TYPE STRING,
RELEF2 TYPE STRING,
RELEF3 TYPE STRING,
PRODF1 TYPE STRING,
PRODF2 TYPE STRING,
PRODF3 TYPE STRING,
PLMHT TYPE STRING,
SPRED_3 TYPE STRING,
SPRED_7 TYPE STRING,
FLGBASME TYPE STRING,
BASME TYPE STRING,
FACTOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISP_CM_HIETAB_1_CM_PM_4_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_WISP_CM_HIETAB_1_CM_PM_4_STR-PLHVS sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-HIER_ID sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-CDT1 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-CDT2 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-CDT3 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-CDT4 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-RELEF1 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-RELEF2 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-RELEF3 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-PRODF1 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-PRODF2 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-PRODF3 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-PLMHT sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-SPRED_3 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-SPRED_7 sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-FLGBASME sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-BASME sy-vline 
WA_WISP_CM_HIETAB_1_CM_PM_4_STR-FACTOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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