ABAP Select data from SAP table CRM_ISU_ERCHZ_I2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRM_ISU_ERCHZ_I2 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 CRM_ISU_ERCHZ_I2. 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 CRM_ISU_ERCHZ_I2 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_CRM_ISU_ERCHZ_I2 TYPE STANDARD TABLE OF CRM_ISU_ERCHZ_I2,
      WA_CRM_ISU_ERCHZ_I2 TYPE CRM_ISU_ERCHZ_I2,
      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: <CRM_ISU_ERCHZ_I2> TYPE CRM_ISU_ERCHZ_I2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRM_ISU_ERCHZ_I2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRM_ISU_ERCHZ_I2
  INTO TABLE IT_CRM_ISU_ERCHZ_I2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRM_ISU_ERCHZ_I2
*  INTO TABLE @DATA(IT_CRM_ISU_ERCHZ_I22).
*--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_CRM_ISU_ERCHZ_I2 INDEX 1 INTO DATA(WA_CRM_ISU_ERCHZ_I22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRM_ISU_ERCHZ_I2 ASSIGNING <CRM_ISU_ERCHZ_I2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRM_ISU_ERCHZ_I2>-EQUNR = 1.
<CRM_ISU_ERCHZ_I2>-GERAET = 1.
<CRM_ISU_ERCHZ_I2>-MATNR = 1.
<CRM_ISU_ERCHZ_I2>-ZWNUMMER = 1.
<CRM_ISU_ERCHZ_I2>-INDEXNR = 1.

ENDLOOP.

LOOP AT IT_CRM_ISU_ERCHZ_I2 INTO WA_CRM_ISU_ERCHZ_I2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRM_ISU_ERCHZ_I2-ABLESGR, sy-vline,
  WA_CRM_ISU_ERCHZ_I2-ABLESGRV, sy-vline,
  WA_CRM_ISU_ERCHZ_I2-ATIM, sy-vline,
  WA_CRM_ISU_ERCHZ_I2-ATIMVA, sy-vline,
  WA_CRM_ISU_ERCHZ_I2-ADATMAX, sy-vline,
  WA_CRM_ISU_ERCHZ_I2-ATIMMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRM_ISU_ERCHZ_I2 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_CRM_ISU_ERCHZ_I2 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_CRM_ISU_ERCHZ_I2 INTO WA_CRM_ISU_ERCHZ_I2.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABLBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-ABLBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-ABLBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MRCONNECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-MRCONNECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-MRCONNECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_ERCHZ_I2-MATNR_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_ERCHZ_I2-MATNR_LONG.
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_CRM_ISU_ERCHZ_I2_STR, 
EQUNR TYPE STRING,
GERAET TYPE STRING,
MATNR TYPE STRING,
ZWNUMMER TYPE STRING,
INDEXNR TYPE STRING,
ABLESGR TYPE STRING,
ABLESGRV TYPE STRING,
ATIM TYPE STRING,
ATIMVA TYPE STRING,
ADATMAX TYPE STRING,
ATIMMAX TYPE STRING,
THGDATUM TYPE STRING,
ZUORDDAT TYPE STRING,
REGRELSORT TYPE STRING,
ABLBELNR TYPE STRING,
LOGIKNR TYPE STRING,
LOGIKZW TYPE STRING,
ISTABLART TYPE STRING,
ISTABLARTVA TYPE STRING,
EXTPKZ TYPE STRING,
BEGPROG TYPE STRING,
ENDEPROG TYPE STRING,
ABLHINW TYPE STRING,
QDPROC TYPE STRING,
MRCONNECT TYPE STRING,
MATNR_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRM_ISU_ERCHZ_I2_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_CRM_ISU_ERCHZ_I2_STR-EQUNR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-GERAET sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-MATNR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ZWNUMMER sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-INDEXNR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ABLESGR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ABLESGRV sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ATIM sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ATIMVA sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ADATMAX sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ATIMMAX sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-THGDATUM sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ZUORDDAT sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-REGRELSORT sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ABLBELNR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-LOGIKNR sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-LOGIKZW sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ISTABLART sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ISTABLARTVA sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-EXTPKZ sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-BEGPROG sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ENDEPROG sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-ABLHINW sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-QDPROC sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-MRCONNECT sy-vline 
WA_CRM_ISU_ERCHZ_I2_STR-MATNR_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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