ABAP Select data from SAP table CMS_AST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMS_AST
*  INTO TABLE @DATA(IT_CMS_AST2).
*--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_CMS_AST INDEX 1 INTO DATA(WA_CMS_AST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMS_AST>-MANDT = 1.
<CMS_AST>-AST_GUID = 1.
<CMS_AST>-AST_ID = 1.
<CMS_AST>-AST_TYP = 1.
<CMS_AST>-PARENT_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMS_AST-SUBAST_ID, sy-vline,
  WA_CMS_AST-SUBAST_TYP, sy-vline,
  WA_CMS_AST-DESCRIPTION, sy-vline,
  WA_CMS_AST-OBJECT_REF_ID, sy-vline,
  WA_CMS_AST-OBJECT_TYP, sy-vline,
  WA_CMS_AST-COUNTRY_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMS_AST 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_CMS_AST 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_CMS_AST INTO WA_CMS_AST.


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

*Conversion exit CUNIT, internal->external for field UNIT_OF_MEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMS_AST-UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMS_AST-UNIT_OF_MEASURE.
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_CMS_AST_STR, 
MANDT TYPE STRING,
AST_GUID TYPE STRING,
AST_ID TYPE STRING,
AST_TYP TYPE STRING,
PARENT_GUID TYPE STRING,
SUBAST_ID TYPE STRING,
SUBAST_TYP TYPE STRING,
DESCRIPTION TYPE STRING,
OBJECT_REF_ID TYPE STRING,
OBJECT_TYP TYPE STRING,
COUNTRY_KEY TYPE STRING,
RISK_CODE TYPE STRING,
SFTY_IND TYPE STRING,
SFTY_DSCNT TYPE STRING,
SFTY_AMOUNT TYPE STRING,
SFTY_AMT_CURR TYPE STRING,
OBJSYSID TYPE STRING,
VALUATION_TYP TYPE STRING,
UNIT_VALN_FREQ TYPE STRING,
PERIOD_VALN_FREQ TYPE STRING,
PAST_VALUED_DATE TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
LENDING_RATE_IND TYPE STRING,
LENDING_RATE1 TYPE STRING,
LENDING_RATE2 TYPE STRING,
LENDING_RATE3 TYPE STRING,
LENDING_RATE4 TYPE STRING,
LENDING_RATE5 TYPE STRING,
LIQD_TYP TYPE STRING,
LIQD_REASON TYPE STRING,
LIQD_DATE TYPE STRING,
LIQD_AMT TYPE STRING,
LIQD_CURR TYPE STRING,
EXP_PRCD_AMNT TYPE STRING,
EXP_PRCD_CURR TYPE STRING,
EXP_ACC_DATE TYPE STRING,
OBJ_EXP_PRC_TIME TYPE STRING,
ACC_NUMBER_LIQ TYPE STRING,
BANK_CNTRY_LIQ TYPE STRING,
BANK_KEY_LIQ TYPE STRING,
BANK_CTRLKEY_LIQ TYPE STRING,
UNIT_VERF_FREQ TYPE STRING,
PERIOD_VERF_FREQ TYPE STRING,
LAST_VERF_DATE TYPE STRING,
NOM_VALUE TYPE STRING,
NOM_VALUE_CURR TYPE STRING,
AST_VALUE TYPE STRING,
AST_VALUE_CURR TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
REC_AT TYPE STRING,
PUR_PRICE TYPE STRING,
PUR_PRICE_CURR TYPE STRING,
PUR_DATE TYPE STRING,
ORI_VALUE TYPE STRING,
ORI_VALUE_CURR TYPE STRING,
ADMIN_ORG_UNIT TYPE STRING,
BANKAREA TYPE STRING,
ORG_UNIT1 TYPE STRING,
ORG_UNIT2 TYPE STRING,
ORG_UNIT3 TYPE STRING,
ORG_UNIT4 TYPE STRING,
ORG_UNIT5 TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
SOURCEOFENTRY TYPE STRING,
NXT_VALUED_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMS_AST_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_CMS_AST_STR-MANDT sy-vline 
WA_CMS_AST_STR-AST_GUID sy-vline 
WA_CMS_AST_STR-AST_ID sy-vline 
WA_CMS_AST_STR-AST_TYP sy-vline 
WA_CMS_AST_STR-PARENT_GUID sy-vline 
WA_CMS_AST_STR-SUBAST_ID sy-vline 
WA_CMS_AST_STR-SUBAST_TYP sy-vline 
WA_CMS_AST_STR-DESCRIPTION sy-vline 
WA_CMS_AST_STR-OBJECT_REF_ID sy-vline 
WA_CMS_AST_STR-OBJECT_TYP sy-vline 
WA_CMS_AST_STR-COUNTRY_KEY sy-vline 
WA_CMS_AST_STR-RISK_CODE sy-vline 
WA_CMS_AST_STR-SFTY_IND sy-vline 
WA_CMS_AST_STR-SFTY_DSCNT sy-vline 
WA_CMS_AST_STR-SFTY_AMOUNT sy-vline 
WA_CMS_AST_STR-SFTY_AMT_CURR sy-vline 
WA_CMS_AST_STR-OBJSYSID sy-vline 
WA_CMS_AST_STR-VALUATION_TYP sy-vline 
WA_CMS_AST_STR-UNIT_VALN_FREQ sy-vline 
WA_CMS_AST_STR-PERIOD_VALN_FREQ sy-vline 
WA_CMS_AST_STR-PAST_VALUED_DATE sy-vline 
WA_CMS_AST_STR-START_DATE sy-vline 
WA_CMS_AST_STR-END_DATE sy-vline 
WA_CMS_AST_STR-LENDING_RATE_IND sy-vline 
WA_CMS_AST_STR-LENDING_RATE1 sy-vline 
WA_CMS_AST_STR-LENDING_RATE2 sy-vline 
WA_CMS_AST_STR-LENDING_RATE3 sy-vline 
WA_CMS_AST_STR-LENDING_RATE4 sy-vline 
WA_CMS_AST_STR-LENDING_RATE5 sy-vline 
WA_CMS_AST_STR-LIQD_TYP sy-vline 
WA_CMS_AST_STR-LIQD_REASON sy-vline 
WA_CMS_AST_STR-LIQD_DATE sy-vline 
WA_CMS_AST_STR-LIQD_AMT sy-vline 
WA_CMS_AST_STR-LIQD_CURR sy-vline 
WA_CMS_AST_STR-EXP_PRCD_AMNT sy-vline 
WA_CMS_AST_STR-EXP_PRCD_CURR sy-vline 
WA_CMS_AST_STR-EXP_ACC_DATE sy-vline 
WA_CMS_AST_STR-OBJ_EXP_PRC_TIME sy-vline 
WA_CMS_AST_STR-ACC_NUMBER_LIQ sy-vline 
WA_CMS_AST_STR-BANK_CNTRY_LIQ sy-vline 
WA_CMS_AST_STR-BANK_KEY_LIQ sy-vline 
WA_CMS_AST_STR-BANK_CTRLKEY_LIQ sy-vline 
WA_CMS_AST_STR-UNIT_VERF_FREQ sy-vline 
WA_CMS_AST_STR-PERIOD_VERF_FREQ sy-vline 
WA_CMS_AST_STR-LAST_VERF_DATE sy-vline 
WA_CMS_AST_STR-NOM_VALUE sy-vline 
WA_CMS_AST_STR-NOM_VALUE_CURR sy-vline 
WA_CMS_AST_STR-AST_VALUE sy-vline 
WA_CMS_AST_STR-AST_VALUE_CURR sy-vline 
WA_CMS_AST_STR-QUANTITY sy-vline 
WA_CMS_AST_STR-UNIT_OF_MEASURE sy-vline 
WA_CMS_AST_STR-REC_AT sy-vline 
WA_CMS_AST_STR-PUR_PRICE sy-vline 
WA_CMS_AST_STR-PUR_PRICE_CURR sy-vline 
WA_CMS_AST_STR-PUR_DATE sy-vline 
WA_CMS_AST_STR-ORI_VALUE sy-vline 
WA_CMS_AST_STR-ORI_VALUE_CURR sy-vline 
WA_CMS_AST_STR-ADMIN_ORG_UNIT sy-vline 
WA_CMS_AST_STR-BANKAREA sy-vline 
WA_CMS_AST_STR-ORG_UNIT1 sy-vline 
WA_CMS_AST_STR-ORG_UNIT2 sy-vline 
WA_CMS_AST_STR-ORG_UNIT3 sy-vline 
WA_CMS_AST_STR-ORG_UNIT4 sy-vline 
WA_CMS_AST_STR-ORG_UNIT5 sy-vline 
WA_CMS_AST_STR-CREATED_BY sy-vline 
WA_CMS_AST_STR-CREATED_AT sy-vline 
WA_CMS_AST_STR-CHANGED_BY sy-vline 
WA_CMS_AST_STR-CHANGED_AT sy-vline 
WA_CMS_AST_STR-SOURCEOFENTRY sy-vline 
WA_CMS_AST_STR-NXT_VALUED_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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