ABAP Select data from SAP table ECP_ESERVICE_OUTTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECP_ESERVICE_OUTTAB
*  INTO TABLE @DATA(IT_ECP_ESERVICE_OUTTAB2).
*--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_ECP_ESERVICE_OUTTAB INDEX 1 INTO DATA(WA_ECP_ESERVICE_OUTTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECP_ESERVICE_OUTTAB>-MDOCM = 1.
<ECP_ESERVICE_OUTTAB>-POINT = 1.
<ECP_ESERVICE_OUTTAB>-IDATE = 1.
<ECP_ESERVICE_OUTTAB>-ITIME = 1.
<ECP_ESERVICE_OUTTAB>-MDTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECP_ESERVICE_OUTTAB-READR, sy-vline,
  WA_ECP_ESERVICE_OUTTAB-ERDAT, sy-vline,
  WA_ECP_ESERVICE_OUTTAB-ERUHR, sy-vline,
  WA_ECP_ESERVICE_OUTTAB-ERNAM, sy-vline,
  WA_ECP_ESERVICE_OUTTAB-AEDAT, sy-vline,
  WA_ECP_ESERVICE_OUTTAB-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECP_ESERVICE_OUTTAB 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_ECP_ESERVICE_OUTTAB 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_ECP_ESERVICE_OUTTAB INTO WA_ECP_ESERVICE_OUTTAB.


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

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

*Conversion exit CUNIT, internal->external for field RECDU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ECP_ESERVICE_OUTTAB-RECDU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECP_ESERVICE_OUTTAB-RECDU.
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_ECP_ESERVICE_OUTTAB_STR, 
MDOCM TYPE STRING,
POINT TYPE STRING,
IDATE TYPE STRING,
ITIME TYPE STRING,
MDTXT TYPE STRING,
READR TYPE STRING,
ERDAT TYPE STRING,
ERUHR TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
LVORM TYPE STRING,
RECDV TYPE STRING,
RECDU TYPE STRING,
CNTRR TYPE STRING,
CANCL TYPE STRING,
IDAT1 TYPE STRING,
ITIM1 TYPE STRING,
LINKS TYPE STRING,
N_READG TYPE STRING,
N_CDIFF TYPE STRING,
PTTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECP_ESERVICE_OUTTAB_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_ECP_ESERVICE_OUTTAB_STR-MDOCM sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-POINT sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-IDATE sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-ITIME sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-MDTXT sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-READR sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-ERDAT sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-ERUHR sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-ERNAM sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-AEDAT sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-AENAM sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-LVORM sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-RECDV sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-RECDU sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-CNTRR sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-CANCL sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-IDAT1 sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-ITIM1 sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-LINKS sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-N_READG sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-N_CDIFF sy-vline 
WA_ECP_ESERVICE_OUTTAB_STR-PTTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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