ABAP Select data from SAP table CNVMBTTABLES_DEX2 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 CNVMBTTABLES_DEX2 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 CNVMBTTABLES_DEX2. 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 CNVMBTTABLES_DEX2 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_CNVMBTTABLES_DEX2 TYPE STANDARD TABLE OF CNVMBTTABLES_DEX2,
      WA_CNVMBTTABLES_DEX2 TYPE CNVMBTTABLES_DEX2,
      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: <CNVMBTTABLES_DEX2> TYPE CNVMBTTABLES_DEX2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNVMBTTABLES_DEX2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNVMBTTABLES_DEX2
  INTO TABLE IT_CNVMBTTABLES_DEX2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVMBTTABLES_DEX2
*  INTO TABLE @DATA(IT_CNVMBTTABLES_DEX22).
*--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_CNVMBTTABLES_DEX2 INDEX 1 INTO DATA(WA_CNVMBTTABLES_DEX22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNVMBTTABLES_DEX2 ASSIGNING <CNVMBTTABLES_DEX2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVMBTTABLES_DEX2>-CLIENT = 1.
<CNVMBTTABLES_DEX2>-PACKID = 1.
<CNVMBTTABLES_DEX2>-CONVOBJECT = 1.
<CNVMBTTABLES_DEX2>-CUSTOMER = 1.
<CNVMBTTABLES_DEX2>-STRUCNAME = 1.

ENDLOOP.

LOOP AT IT_CNVMBTTABLES_DEX2 INTO WA_CNVMBTTABLES_DEX2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVMBTTABLES_DEX2-TABNAME, sy-vline,
  WA_CNVMBTTABLES_DEX2-SND_RCV, sy-vline,
  WA_CNVMBTTABLES_DEX2-RCVSTRUC, sy-vline,
  WA_CNVMBTTABLES_DEX2-STRUCREL, sy-vline,
  WA_CNVMBTTABLES_DEX2-PRIMARY_REL, sy-vline,
  WA_CNVMBTTABLES_DEX2-DATAPATH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVMBTTABLES_DEX2 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_CNVMBTTABLES_DEX2 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_CNVMBTTABLES_DEX2 INTO WA_CNVMBTTABLES_DEX2.


*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_CNVMBTTABLES_DEX2_STR, 
CLIENT TYPE STRING,
PACKID TYPE STRING,
CONVOBJECT TYPE STRING,
CUSTOMER TYPE STRING,
STRUCNAME TYPE STRING,
TABNAME TYPE STRING,
SND_RCV TYPE STRING,
RCVSTRUC TYPE STRING,
STRUCREL TYPE STRING,
PRIMARY_REL TYPE STRING,
DATAPATH TYPE STRING,
NOT_USE TYPE STRING,
NO_EXIST TYPE STRING,
NO_DATA TYPE STRING,
READONLY TYPE STRING,
DESCRIPT TYPE STRING,
VIRTUAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVMBTTABLES_DEX2_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_CNVMBTTABLES_DEX2_STR-CLIENT sy-vline 
WA_CNVMBTTABLES_DEX2_STR-PACKID sy-vline 
WA_CNVMBTTABLES_DEX2_STR-CONVOBJECT sy-vline 
WA_CNVMBTTABLES_DEX2_STR-CUSTOMER sy-vline 
WA_CNVMBTTABLES_DEX2_STR-STRUCNAME sy-vline 
WA_CNVMBTTABLES_DEX2_STR-TABNAME sy-vline 
WA_CNVMBTTABLES_DEX2_STR-SND_RCV sy-vline 
WA_CNVMBTTABLES_DEX2_STR-RCVSTRUC sy-vline 
WA_CNVMBTTABLES_DEX2_STR-STRUCREL sy-vline 
WA_CNVMBTTABLES_DEX2_STR-PRIMARY_REL sy-vline 
WA_CNVMBTTABLES_DEX2_STR-DATAPATH sy-vline 
WA_CNVMBTTABLES_DEX2_STR-NOT_USE sy-vline 
WA_CNVMBTTABLES_DEX2_STR-NO_EXIST sy-vline 
WA_CNVMBTTABLES_DEX2_STR-NO_DATA sy-vline 
WA_CNVMBTTABLES_DEX2_STR-READONLY sy-vline 
WA_CNVMBTTABLES_DEX2_STR-DESCRIPT sy-vline 
WA_CNVMBTTABLES_DEX2_STR-VIRTUAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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