ABAP Select data from SAP table CRMV_FDT_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMV_FDT_ATTR
*  INTO TABLE @DATA(IT_CRMV_FDT_ATTR2).
*--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_CRMV_FDT_ATTR INDEX 1 INTO DATA(WA_CRMV_FDT_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMV_FDT_ATTR>-MANDT = 1.
<CRMV_FDT_ATTR>-APPL_ID = 1.
<CRMV_FDT_ATTR>-BO_ID = 1.
<CRMV_FDT_ATTR>-ATTR_ID = 1.
<CRMV_FDT_ATTR>-ATTR_DESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMV_FDT_ATTR-HELP_TYPE, sy-vline,
  WA_CRMV_FDT_ATTR-DATA_TYPE, sy-vline,
  WA_CRMV_FDT_ATTR-SHOW_ATTR, sy-vline,
  WA_CRMV_FDT_ATTR-OPTIONAL, sy-vline,
  WA_CRMV_FDT_ATTR-EQ, sy-vline,
  WA_CRMV_FDT_ATTR-NE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMV_FDT_ATTR 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_CRMV_FDT_ATTR 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_CRMV_FDT_ATTR INTO WA_CRMV_FDT_ATTR.


*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_CRMV_FDT_ATTR_STR, 
MANDT TYPE STRING,
APPL_ID TYPE STRING,
BO_ID TYPE STRING,
ATTR_ID TYPE STRING,
ATTR_DESC TYPE STRING,
HELP_TYPE TYPE STRING,
DATA_TYPE TYPE STRING,
SHOW_ATTR TYPE STRING,
OPTIONAL TYPE STRING,
EQ TYPE STRING,
NE TYPE STRING,
BT TYPE STRING,
NB TYPE STRING,
CP TYPE STRING,
NP TYPE STRING,
LT TYPE STRING,
LE TYPE STRING,
GT TYPE STRING,
GE TYPE STRING,
REF_TAB TYPE STRING,
REF_FIELDNAME TYPE STRING,
FORMULA_FLAG TYPE STRING,
LENGTH TYPE STRING,
DECIMALS TYPE STRING,
REF_OBJTYPE TYPE STRING,
IX TYPE STRING,
WL TYPE STRING,
WA TYPE STRING,
F4HELP TYPE STRING,
SUB_ATTR TYPE STRING,
FDT_ATTR_GUID TYPE STRING,
SAP_FLAG TYPE STRING,
I1 TYPE STRING,
I2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMV_FDT_ATTR_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_CRMV_FDT_ATTR_STR-MANDT sy-vline 
WA_CRMV_FDT_ATTR_STR-APPL_ID sy-vline 
WA_CRMV_FDT_ATTR_STR-BO_ID sy-vline 
WA_CRMV_FDT_ATTR_STR-ATTR_ID sy-vline 
WA_CRMV_FDT_ATTR_STR-ATTR_DESC sy-vline 
WA_CRMV_FDT_ATTR_STR-HELP_TYPE sy-vline 
WA_CRMV_FDT_ATTR_STR-DATA_TYPE sy-vline 
WA_CRMV_FDT_ATTR_STR-SHOW_ATTR sy-vline 
WA_CRMV_FDT_ATTR_STR-OPTIONAL sy-vline 
WA_CRMV_FDT_ATTR_STR-EQ sy-vline 
WA_CRMV_FDT_ATTR_STR-NE sy-vline 
WA_CRMV_FDT_ATTR_STR-BT sy-vline 
WA_CRMV_FDT_ATTR_STR-NB sy-vline 
WA_CRMV_FDT_ATTR_STR-CP sy-vline 
WA_CRMV_FDT_ATTR_STR-NP sy-vline 
WA_CRMV_FDT_ATTR_STR-LT sy-vline 
WA_CRMV_FDT_ATTR_STR-LE sy-vline 
WA_CRMV_FDT_ATTR_STR-GT sy-vline 
WA_CRMV_FDT_ATTR_STR-GE sy-vline 
WA_CRMV_FDT_ATTR_STR-REF_TAB sy-vline 
WA_CRMV_FDT_ATTR_STR-REF_FIELDNAME sy-vline 
WA_CRMV_FDT_ATTR_STR-FORMULA_FLAG sy-vline 
WA_CRMV_FDT_ATTR_STR-LENGTH sy-vline 
WA_CRMV_FDT_ATTR_STR-DECIMALS sy-vline 
WA_CRMV_FDT_ATTR_STR-REF_OBJTYPE sy-vline 
WA_CRMV_FDT_ATTR_STR-IX sy-vline 
WA_CRMV_FDT_ATTR_STR-WL sy-vline 
WA_CRMV_FDT_ATTR_STR-WA sy-vline 
WA_CRMV_FDT_ATTR_STR-F4HELP sy-vline 
WA_CRMV_FDT_ATTR_STR-SUB_ATTR sy-vline 
WA_CRMV_FDT_ATTR_STR-FDT_ATTR_GUID sy-vline 
WA_CRMV_FDT_ATTR_STR-SAP_FLAG sy-vline 
WA_CRMV_FDT_ATTR_STR-I1 sy-vline 
WA_CRMV_FDT_ATTR_STR-I2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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