ABAP Select data from SAP table CME_ST_FORMAT_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CME_ST_FORMAT_X
*  INTO TABLE @DATA(IT_CME_ST_FORMAT_X2).
*--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_CME_ST_FORMAT_X INDEX 1 INTO DATA(WA_CME_ST_FORMAT_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CME_ST_FORMAT_X>-DATATYP = 1.
<CME_ST_FORMAT_X>-DIGITS = 1.
<CME_ST_FORMAT_X>-DECIMALS = 1.
<CME_ST_FORMAT_X>-CASESENS = 1.
<CME_ST_FORMAT_X>-SIGNED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CME_ST_FORMAT_X-UOM, sy-vline,
  WA_CME_ST_FORMAT_X-CURRENCY, sy-vline,
  WA_CME_ST_FORMAT_X-EXP_TYPE, sy-vline,
  WA_CME_ST_FORMAT_X-EXP_VALUE, sy-vline,
  WA_CME_ST_FORMAT_X-INTERVA, sy-vline,
  WA_CME_ST_FORMAT_X-ACCURACY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CME_ST_FORMAT_X 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_CME_ST_FORMAT_X 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_CME_ST_FORMAT_X INTO WA_CME_ST_FORMAT_X.


*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_CME_ST_FORMAT_X_STR, 
DATATYP TYPE STRING,
DIGITS TYPE STRING,
DECIMALS TYPE STRING,
CASESENS TYPE STRING,
SIGNED TYPE STRING,
UOM TYPE STRING,
CURRENCY TYPE STRING,
EXP_TYPE TYPE STRING,
EXP_VALUE TYPE STRING,
INTERVA TYPE STRING,
ACCURACY TYPE STRING,
PATTERN TYPE STRING,
SEPARATOR TYPE STRING,
LEVELS TYPE STRING,
AUTOMATIC TYPE STRING,
CONVERSIO TYPE STRING,
REFERENCE TYPE STRING,
CHECKTABL TYPE STRING,
CHECKCLAS TYPE STRING,
DOCUMENTS TYPE STRING,
ECM_COUNT TYPE STRING,
ECM_DEL TYPE STRING,
DESC_MAND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CME_ST_FORMAT_X_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_CME_ST_FORMAT_X_STR-DATATYP sy-vline 
WA_CME_ST_FORMAT_X_STR-DIGITS sy-vline 
WA_CME_ST_FORMAT_X_STR-DECIMALS sy-vline 
WA_CME_ST_FORMAT_X_STR-CASESENS sy-vline 
WA_CME_ST_FORMAT_X_STR-SIGNED sy-vline 
WA_CME_ST_FORMAT_X_STR-UOM sy-vline 
WA_CME_ST_FORMAT_X_STR-CURRENCY sy-vline 
WA_CME_ST_FORMAT_X_STR-EXP_TYPE sy-vline 
WA_CME_ST_FORMAT_X_STR-EXP_VALUE sy-vline 
WA_CME_ST_FORMAT_X_STR-INTERVA sy-vline 
WA_CME_ST_FORMAT_X_STR-ACCURACY sy-vline 
WA_CME_ST_FORMAT_X_STR-PATTERN sy-vline 
WA_CME_ST_FORMAT_X_STR-SEPARATOR sy-vline 
WA_CME_ST_FORMAT_X_STR-LEVELS sy-vline 
WA_CME_ST_FORMAT_X_STR-AUTOMATIC sy-vline 
WA_CME_ST_FORMAT_X_STR-CONVERSIO sy-vline 
WA_CME_ST_FORMAT_X_STR-REFERENCE sy-vline 
WA_CME_ST_FORMAT_X_STR-CHECKTABL sy-vline 
WA_CME_ST_FORMAT_X_STR-CHECKCLAS sy-vline 
WA_CME_ST_FORMAT_X_STR-DOCUMENTS sy-vline 
WA_CME_ST_FORMAT_X_STR-ECM_COUNT sy-vline 
WA_CME_ST_FORMAT_X_STR-ECM_DEL sy-vline 
WA_CME_ST_FORMAT_X_STR-DESC_MAND sy-vline      INTO ld_text SEPARATED BY SPACE.

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