ABAP Select data from SAP table CRMST_SLINE_ERPIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMST_SLINE_ERPIL
*  INTO TABLE @DATA(IT_CRMST_SLINE_ERPIL2).
*--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_CRMST_SLINE_ERPIL INDEX 1 INTO DATA(WA_CRMST_SLINE_ERPIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMST_SLINE_ERPIL>-HANDLE_ITEM = 1.
<CRMST_SLINE_ERPIL>-HANDLE = 1.
<CRMST_SLINE_ERPIL>-SELKZ = 1.
<CRMST_SLINE_ERPIL>-POSNR = 1.
<CRMST_SLINE_ERPIL>-ETENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMST_SLINE_ERPIL-PRGBZ, sy-vline,
  WA_CRMST_SLINE_ERPIL-ETDAT, sy-vline,
  WA_CRMST_SLINE_ERPIL-WMENG, sy-vline,
  WA_CRMST_SLINE_ERPIL-CMENG, sy-vline,
  WA_CRMST_SLINE_ERPIL-BMENG, sy-vline,
  WA_CRMST_SLINE_ERPIL-VRKME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMST_SLINE_ERPIL 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_CRMST_SLINE_ERPIL 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_CRMST_SLINE_ERPIL INTO WA_CRMST_SLINE_ERPIL.


*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 CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMST_SLINE_ERPIL-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMST_SLINE_ERPIL-VRKME.
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_CRMST_SLINE_ERPIL_STR, 
HANDLE_ITEM TYPE STRING,
HANDLE TYPE STRING,
SELKZ TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
PRGBZ TYPE STRING,
ETDAT TYPE STRING,
WMENG TYPE STRING,
CMENG TYPE STRING,
BMENG TYPE STRING,
VRKME TYPE STRING,
LIFSP TYPE STRING,
VSMNG TYPE STRING,
ROMS1 TYPE STRING,
ETTYP TYPE STRING,
WADAT TYPE STRING,
LDDAT TYPE STRING,
MBDAT TYPE STRING,
TDDAT TYPE STRING,
EZEIT TYPE STRING,
EDATU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMST_SLINE_ERPIL_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_CRMST_SLINE_ERPIL_STR-HANDLE_ITEM sy-vline 
WA_CRMST_SLINE_ERPIL_STR-HANDLE sy-vline 
WA_CRMST_SLINE_ERPIL_STR-SELKZ sy-vline 
WA_CRMST_SLINE_ERPIL_STR-POSNR sy-vline 
WA_CRMST_SLINE_ERPIL_STR-ETENR sy-vline 
WA_CRMST_SLINE_ERPIL_STR-PRGBZ sy-vline 
WA_CRMST_SLINE_ERPIL_STR-ETDAT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-WMENG sy-vline 
WA_CRMST_SLINE_ERPIL_STR-CMENG sy-vline 
WA_CRMST_SLINE_ERPIL_STR-BMENG sy-vline 
WA_CRMST_SLINE_ERPIL_STR-VRKME sy-vline 
WA_CRMST_SLINE_ERPIL_STR-LIFSP sy-vline 
WA_CRMST_SLINE_ERPIL_STR-VSMNG sy-vline 
WA_CRMST_SLINE_ERPIL_STR-ROMS1 sy-vline 
WA_CRMST_SLINE_ERPIL_STR-ETTYP sy-vline 
WA_CRMST_SLINE_ERPIL_STR-WADAT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-LDDAT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-MBDAT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-TDDAT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-EZEIT sy-vline 
WA_CRMST_SLINE_ERPIL_STR-EDATU sy-vline      INTO ld_text SEPARATED BY SPACE.

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