ABAP Select data from SAP table ECRM_ISU_CALC0_MV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ECRM_ISU_CALC0_MV 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 ECRM_ISU_CALC0_MV. 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 ECRM_ISU_CALC0_MV 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_ECRM_ISU_CALC0_MV TYPE STANDARD TABLE OF ECRM_ISU_CALC0_MV,
      WA_ECRM_ISU_CALC0_MV TYPE ECRM_ISU_CALC0_MV,
      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: <ECRM_ISU_CALC0_MV> TYPE ECRM_ISU_CALC0_MV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ECRM_ISU_CALC0_MV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ECRM_ISU_CALC0_MV
  INTO TABLE IT_ECRM_ISU_CALC0_MV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECRM_ISU_CALC0_MV
*  INTO TABLE @DATA(IT_ECRM_ISU_CALC0_MV2).
*--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_ECRM_ISU_CALC0_MV INDEX 1 INTO DATA(WA_ECRM_ISU_CALC0_MV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ECRM_ISU_CALC0_MV ASSIGNING <ECRM_ISU_CALC0_MV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECRM_ISU_CALC0_MV>-CLIENT = 1.
<ECRM_ISU_CALC0_MV>-FRG_GUID = 1.
<ECRM_ISU_CALC0_MV>-VALID_FROM = 1.
<ECRM_ISU_CALC0_MV>-VALID_TO = 1.
<ECRM_ISU_CALC0_MV>-UPNAME = 1.

ENDLOOP.

LOOP AT IT_ECRM_ISU_CALC0_MV INTO WA_ECRM_ISU_CALC0_MV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECRM_ISU_CALC0_MV-HISTEX, sy-vline,
  WA_ECRM_ISU_CALC0_MV-LOGSYS, sy-vline,
  WA_ECRM_ISU_CALC0_MV-FF0010, sy-vline,
  WA_ECRM_ISU_CALC0_MV-FF0011, sy-vline,
  WA_ECRM_ISU_CALC0_MV-FF0012, sy-vline,
  WA_ECRM_ISU_CALC0_MV-FF0013, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECRM_ISU_CALC0_MV 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_ECRM_ISU_CALC0_MV 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_ECRM_ISU_CALC0_MV INTO WA_ECRM_ISU_CALC0_MV.


*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_ECRM_ISU_CALC0_MV-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_ISU_CALC0_MV-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_ECRM_ISU_CALC0_MV-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_ISU_CALC0_MV-VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ECRM_ISU_CALC0_MV-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_ISU_CALC0_MV-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_ECRM_ISU_CALC0_MV_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,
FF0010 TYPE STRING,
FF0011 TYPE STRING,
FF0012 TYPE STRING,
FF0013 TYPE STRING,
FF0014 TYPE STRING,
FF0015 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECRM_ISU_CALC0_MV_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_ECRM_ISU_CALC0_MV_STR-CLIENT sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FRG_GUID sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-VALID_FROM sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-VALID_TO sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-UPNAME sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-HISTEX sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-LOGSYS sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0010 sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0011 sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0012 sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0013 sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0014 sy-vline 
WA_ECRM_ISU_CALC0_MV_STR-FF0015 sy-vline      INTO ld_text SEPARATED BY SPACE.

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