ABAP Select data from SAP table E1CMDSR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1CMDSR 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 E1CMDSR. 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 E1CMDSR 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_E1CMDSR TYPE STANDARD TABLE OF E1CMDSR,
      WA_E1CMDSR TYPE E1CMDSR,
      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: <E1CMDSR> TYPE E1CMDSR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1CMDSR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1CMDSR
  INTO TABLE IT_E1CMDSR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1CMDSR
*  INTO TABLE @DATA(IT_E1CMDSR2).
*--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_E1CMDSR INDEX 1 INTO DATA(WA_E1CMDSR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1CMDSR ASSIGNING <E1CMDSR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1CMDSR>-ALEDATE = 1.
<E1CMDSR>-ALETIME = 1.
<E1CMDSR>-BUKRS = 1.
<E1CMDSR>-GRUPP = 1.
<E1CMDSR>-EBENE = 1.

ENDLOOP.

LOOP AT IT_E1CMDSR INTO WA_E1CMDSR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1CMDSR-DISPW, sy-vline,
  WA_E1CMDSR-DATUM, sy-vline,
  WA_E1CMDSR-AVDAT, sy-vline,
  WA_E1CMDSR-GSBER, sy-vline,
  WA_E1CMDSR-WRSHB, sy-vline,
  WA_E1CMDSR-DMSHB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1CMDSR 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_E1CMDSR 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_E1CMDSR INTO WA_E1CMDSR.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_E1CMDSR_STR, 
ALEDATE TYPE STRING,
ALETIME TYPE STRING,
BUKRS TYPE STRING,
GRUPP TYPE STRING,
EBENE TYPE STRING,
DISPW TYPE STRING,
DATUM TYPE STRING,
AVDAT TYPE STRING,
GSBER TYPE STRING,
WRSHB TYPE STRING,
DMSHB TYPE STRING,
HWAER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
CMVIEW TYPE STRING,
SPLIT TYPE STRING,
RESERVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1CMDSR_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_E1CMDSR_STR-ALEDATE sy-vline 
WA_E1CMDSR_STR-ALETIME sy-vline 
WA_E1CMDSR_STR-BUKRS sy-vline 
WA_E1CMDSR_STR-GRUPP sy-vline 
WA_E1CMDSR_STR-EBENE sy-vline 
WA_E1CMDSR_STR-DISPW sy-vline 
WA_E1CMDSR_STR-DATUM sy-vline 
WA_E1CMDSR_STR-AVDAT sy-vline 
WA_E1CMDSR_STR-GSBER sy-vline 
WA_E1CMDSR_STR-WRSHB sy-vline 
WA_E1CMDSR_STR-DMSHB sy-vline 
WA_E1CMDSR_STR-HWAER sy-vline 
WA_E1CMDSR_STR-SEGMENT sy-vline 
WA_E1CMDSR_STR-PRCTR sy-vline 
WA_E1CMDSR_STR-GEBER sy-vline 
WA_E1CMDSR_STR-GRANT_NBR sy-vline 
WA_E1CMDSR_STR-CMVIEW sy-vline 
WA_E1CMDSR_STR-SPLIT sy-vline 
WA_E1CMDSR_STR-RESERVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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