ABAP Select data from SAP table ECVCONF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECVCONF
*  INTO TABLE @DATA(IT_ECVCONF2).
*--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_ECVCONF INDEX 1 INTO DATA(WA_ECVCONF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECVCONF>-MANDT = 1.
<ECVCONF>-ACTSTAT = 1.
<ECVCONF>-CONFIG = 1.
<ECVCONF>-JAVASCRIPTLIB = 1.
<ECVCONF>-STARTNODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECVCONF-MERGETPOOL, sy-vline,
  WA_ECVCONF-HTMLDIR, sy-vline,
  WA_ECVCONF-RESOURCES, sy-vline,
  WA_ECVCONF-VIAFSYS, sy-vline,
  WA_ECVCONF-ENTRYLEVEL, sy-vline,
  WA_ECVCONF-ECVNLEVEL1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECVCONF 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_ECVCONF 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_ECVCONF INTO WA_ECVCONF.


*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_ECVCONF_STR, 
MANDT TYPE STRING,
ACTSTAT TYPE STRING,
CONFIG TYPE STRING,
JAVASCRIPTLIB TYPE STRING,
STARTNODE TYPE STRING,
MERGETPOOL TYPE STRING,
HTMLDIR TYPE STRING,
RESOURCES TYPE STRING,
VIAFSYS TYPE STRING,
ENTRYLEVEL TYPE STRING,
ECVNLEVEL1 TYPE STRING,
ECVNLEVEL2 TYPE STRING,
REPL_PREFIX TYPE STRING,
REPL_SUFFIX TYPE STRING,
FLG_SCRNTXT TYPE STRING,
ADRLINES TYPE STRING,
TR_LEFT TYPE STRING,
TR_TOP TYPE STRING,
TR_WIDTH TYPE STRING,
TR_HEIGHT TYPE STRING,
TR_ALIGN TYPE STRING,
HT_LEFT TYPE STRING,
HT_TOP TYPE STRING,
HT_WIDTH TYPE STRING,
HT_HEIGHT TYPE STRING,
HT_ALIGN TYPE STRING,
LANGFLAG TYPE STRING,
INCFLAG TYPE STRING,
SCRPTFROMR3 TYPE STRING,
DEBUGFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECVCONF_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_ECVCONF_STR-MANDT sy-vline 
WA_ECVCONF_STR-ACTSTAT sy-vline 
WA_ECVCONF_STR-CONFIG sy-vline 
WA_ECVCONF_STR-JAVASCRIPTLIB sy-vline 
WA_ECVCONF_STR-STARTNODE sy-vline 
WA_ECVCONF_STR-MERGETPOOL sy-vline 
WA_ECVCONF_STR-HTMLDIR sy-vline 
WA_ECVCONF_STR-RESOURCES sy-vline 
WA_ECVCONF_STR-VIAFSYS sy-vline 
WA_ECVCONF_STR-ENTRYLEVEL sy-vline 
WA_ECVCONF_STR-ECVNLEVEL1 sy-vline 
WA_ECVCONF_STR-ECVNLEVEL2 sy-vline 
WA_ECVCONF_STR-REPL_PREFIX sy-vline 
WA_ECVCONF_STR-REPL_SUFFIX sy-vline 
WA_ECVCONF_STR-FLG_SCRNTXT sy-vline 
WA_ECVCONF_STR-ADRLINES sy-vline 
WA_ECVCONF_STR-TR_LEFT sy-vline 
WA_ECVCONF_STR-TR_TOP sy-vline 
WA_ECVCONF_STR-TR_WIDTH sy-vline 
WA_ECVCONF_STR-TR_HEIGHT sy-vline 
WA_ECVCONF_STR-TR_ALIGN sy-vline 
WA_ECVCONF_STR-HT_LEFT sy-vline 
WA_ECVCONF_STR-HT_TOP sy-vline 
WA_ECVCONF_STR-HT_WIDTH sy-vline 
WA_ECVCONF_STR-HT_HEIGHT sy-vline 
WA_ECVCONF_STR-HT_ALIGN sy-vline 
WA_ECVCONF_STR-LANGFLAG sy-vline 
WA_ECVCONF_STR-INCFLAG sy-vline 
WA_ECVCONF_STR-SCRPTFROMR3 sy-vline 
WA_ECVCONF_STR-DEBUGFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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