ABAP Select data from SAP table E3CMDSB into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3CMDSB 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 E3CMDSB. 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 E3CMDSB 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_E3CMDSB TYPE STANDARD TABLE OF E3CMDSB,
      WA_E3CMDSB TYPE E3CMDSB,
      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: <E3CMDSB> TYPE E3CMDSB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3CMDSB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3CMDSB
  INTO TABLE IT_E3CMDSB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3CMDSB
*  INTO TABLE @DATA(IT_E3CMDSB2).
*--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_E3CMDSB INDEX 1 INTO DATA(WA_E3CMDSB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3CMDSB ASSIGNING <E3CMDSB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3CMDSB>-ALEDATE = 1.
<E3CMDSB>-ALETIME = 1.
<E3CMDSB>-SEGMT = 1.
<E3CMDSB>-BUKRS = 1.
<E3CMDSB>-BNKKO = 1.

ENDLOOP.

LOOP AT IT_E3CMDSB INTO WA_E3CMDSB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3CMDSB-EBENE, sy-vline,
  WA_E3CMDSB-DISPW, sy-vline,
  WA_E3CMDSB-DATUM, sy-vline,
  WA_E3CMDSB-AVDAT, sy-vline,
  WA_E3CMDSB-GSBER, sy-vline,
  WA_E3CMDSB-WRSHB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3CMDSB 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_E3CMDSB 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_E3CMDSB INTO WA_E3CMDSB.


*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 BNKKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CMDSB-BNKKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CMDSB-BNKKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_E3CMDSB-WRSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CMDSB-WRSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DMSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_E3CMDSB-DMSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CMDSB-DMSHB.
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_E3CMDSB_STR, 
ALEDATE TYPE STRING,
ALETIME TYPE STRING,
SEGMT TYPE STRING,
BUKRS TYPE STRING,
BNKKO 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,END OF T_EKKO_STR.
DATA: WA_E3CMDSB_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_E3CMDSB_STR-ALEDATE sy-vline 
WA_E3CMDSB_STR-ALETIME sy-vline 
WA_E3CMDSB_STR-SEGMT sy-vline 
WA_E3CMDSB_STR-BUKRS sy-vline 
WA_E3CMDSB_STR-BNKKO sy-vline 
WA_E3CMDSB_STR-EBENE sy-vline 
WA_E3CMDSB_STR-DISPW sy-vline 
WA_E3CMDSB_STR-DATUM sy-vline 
WA_E3CMDSB_STR-AVDAT sy-vline 
WA_E3CMDSB_STR-GSBER sy-vline 
WA_E3CMDSB_STR-WRSHB sy-vline 
WA_E3CMDSB_STR-DMSHB sy-vline 
WA_E3CMDSB_STR-HWAER sy-vline      INTO ld_text SEPARATED BY SPACE.

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