ABAP Select data from SAP table CRMV_ISU_INDEX_H into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMV_ISU_INDEX_H
*  INTO TABLE @DATA(IT_CRMV_ISU_INDEX_H2).
*--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_CRMV_ISU_INDEX_H INDEX 1 INTO DATA(WA_CRMV_ISU_INDEX_H2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMV_ISU_INDEX_H>-CLIENT = 1.
<CRMV_ISU_INDEX_H>-PARTNER = 1.
<CRMV_ISU_INDEX_H>-OBJECT_ID = 1.
<CRMV_ISU_INDEX_H>-ISUCONTRACT = 1.
<CRMV_ISU_INDEX_H>-CONTSTART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMV_ISU_INDEX_H-CONTEND, sy-vline,
  WA_CRMV_ISU_INDEX_H-QUOTATION, sy-vline,
  WA_CRMV_ISU_INDEX_H-CANCELLED, sy-vline,
  WA_CRMV_ISU_INDEX_H-PARTNER_GUID, sy-vline,
  WA_CRMV_ISU_INDEX_H-ORDERED_PROD, sy-vline,
  WA_CRMV_ISU_INDEX_H-ITM_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMV_ISU_INDEX_H 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_CRMV_ISU_INDEX_H 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_CRMV_ISU_INDEX_H INTO WA_CRMV_ISU_INDEX_H.


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

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

*Conversion exit TSTLC, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_CRMV_ISU_INDEX_H-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMV_ISU_INDEX_H-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_CRMV_ISU_INDEX_H-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMV_ISU_INDEX_H-CHANGED_AT.
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_CRMV_ISU_INDEX_H_STR, 
CLIENT TYPE STRING,
PARTNER TYPE STRING,
OBJECT_ID TYPE STRING,
ISUCONTRACT TYPE STRING,
CONTSTART TYPE STRING,
CONTEND TYPE STRING,
QUOTATION TYPE STRING,
CANCELLED TYPE STRING,
PARTNER_GUID TYPE STRING,
ORDERED_PROD TYPE STRING,
ITM_TYPE TYPE STRING,
BLOCKED TYPE STRING,
GUID TYPE STRING,
CREATED_AT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
OBJECT_TYPE_I TYPE STRING,
DESCRIPTION_UC TYPE STRING,
HEADER TYPE STRING,
PARENT TYPE STRING,
PRODUCT TYPE STRING,
DESCRIPTION TYPE STRING,
NUMBER_INT TYPE STRING,
POD_GUID TYPE STRING,
ISULOGSYS TYPE STRING,
BUAG_GUID TYPE STRING,
PROCESS_TYPE TYPE STRING,
OBJECT_TYPE_H TYPE STRING,
VALIDTO TYPE STRING,
VALIDFROM TYPE STRING,
RELPREV TYPE STRING,
RELNEXT TYPE STRING,
RELITEM TYPE STRING,
PREVITEM TYPE STRING,
NEXTITEM TYPE STRING,
DIVISION TYPE STRING,
CONTDUR TYPE STRING,
TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMV_ISU_INDEX_H_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_CRMV_ISU_INDEX_H_STR-CLIENT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PARTNER sy-vline 
WA_CRMV_ISU_INDEX_H_STR-OBJECT_ID sy-vline 
WA_CRMV_ISU_INDEX_H_STR-ISUCONTRACT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CONTSTART sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CONTEND sy-vline 
WA_CRMV_ISU_INDEX_H_STR-QUOTATION sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CANCELLED sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PARTNER_GUID sy-vline 
WA_CRMV_ISU_INDEX_H_STR-ORDERED_PROD sy-vline 
WA_CRMV_ISU_INDEX_H_STR-ITM_TYPE sy-vline 
WA_CRMV_ISU_INDEX_H_STR-BLOCKED sy-vline 
WA_CRMV_ISU_INDEX_H_STR-GUID sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CREATED_AT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CREATED_BY sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CHANGED_AT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CHANGED_BY sy-vline 
WA_CRMV_ISU_INDEX_H_STR-OBJECT_TYPE_I sy-vline 
WA_CRMV_ISU_INDEX_H_STR-DESCRIPTION_UC sy-vline 
WA_CRMV_ISU_INDEX_H_STR-HEADER sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PARENT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PRODUCT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-DESCRIPTION sy-vline 
WA_CRMV_ISU_INDEX_H_STR-NUMBER_INT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-POD_GUID sy-vline 
WA_CRMV_ISU_INDEX_H_STR-ISULOGSYS sy-vline 
WA_CRMV_ISU_INDEX_H_STR-BUAG_GUID sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PROCESS_TYPE sy-vline 
WA_CRMV_ISU_INDEX_H_STR-OBJECT_TYPE_H sy-vline 
WA_CRMV_ISU_INDEX_H_STR-VALIDTO sy-vline 
WA_CRMV_ISU_INDEX_H_STR-VALIDFROM sy-vline 
WA_CRMV_ISU_INDEX_H_STR-RELPREV sy-vline 
WA_CRMV_ISU_INDEX_H_STR-RELNEXT sy-vline 
WA_CRMV_ISU_INDEX_H_STR-RELITEM sy-vline 
WA_CRMV_ISU_INDEX_H_STR-PREVITEM sy-vline 
WA_CRMV_ISU_INDEX_H_STR-NEXTITEM sy-vline 
WA_CRMV_ISU_INDEX_H_STR-DIVISION sy-vline 
WA_CRMV_ISU_INDEX_H_STR-CONTDUR sy-vline 
WA_CRMV_ISU_INDEX_H_STR-TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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