ABAP Select data from SAP table CACS_DET_VARIANT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACS_DET_VARIANT
*  INTO TABLE @DATA(IT_CACS_DET_VARIANT2).
*--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_CACS_DET_VARIANT INDEX 1 INTO DATA(WA_CACS_DET_VARIANT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACS_DET_VARIANT>-MANDT = 1.
<CACS_DET_VARIANT>-APPL = 1.
<CACS_DET_VARIANT>-VARNAME = 1.
<CACS_DET_VARIANT>-ERNAM = 1.
<CACS_DET_VARIANT>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACS_DET_VARIANT-ERZZT, sy-vline,
  WA_CACS_DET_VARIANT-VARDESC, sy-vline,
  WA_CACS_DET_VARIANT-ENTRY_POINT, sy-vline,
  WA_CACS_DET_VARIANT-SELTAB, sy-vline,
  WA_CACS_DET_VARIANT-OLD_DET, sy-vline,
  WA_CACS_DET_VARIANT-NEW_DET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACS_DET_VARIANT 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_CACS_DET_VARIANT 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_CACS_DET_VARIANT INTO WA_CACS_DET_VARIANT.


*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 TSTPS, internal->external for field BUSI
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-BUSI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-BUSI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field TECH
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-TECH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-TECH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FLT_CTRTST_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-FLT_CTRTST_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-FLT_CTRTST_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COMBTP_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-COMBTP_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-COMBTP_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CTRTBU_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-CTRTBU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-CTRTBU_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CTRTST_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-CTRTST_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-CTRTST_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STCAGR_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-STCAGR_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-STCAGR_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BOBJ0, internal->external for field BUSOBJ_TYPE
CALL FUNCTION 'CONVERSION_EXIT_BOBJ0_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-BUSOBJ_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-BUSOBJ_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SELRULE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_DET_VARIANT-SELRULE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_DET_VARIANT-SELRULE_ID.
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_CACS_DET_VARIANT_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
VARNAME TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZZT TYPE STRING,
VARDESC TYPE STRING,
ENTRY_POINT TYPE STRING,
SELTAB TYPE STRING,
OLD_DET TYPE STRING,
NEW_DET TYPE STRING,
BUSI_NOW TYPE STRING,
BUSI_OTHER TYPE STRING,
BUSI TYPE STRING,
TECH_NOW TYPE STRING,
TECH_OTHER TYPE STRING,
TECH TYPE STRING,
FLT_CTRT_TYPE TYPE STRING,
FLT_CTRTST_ID TYPE STRING,
COMBTP_ID TYPE STRING,
CTRTBU_ID TYPE STRING,
CTRTST_ID TYPE STRING,
AGR_TYP TYPE STRING,
STCAGR_ID TYPE STRING,
BUSOBJ_TYPE TYPE STRING,
SELRULE_ID TYPE STRING,
RGOAID TYPE STRING,
STMTYPE_ID TYPE STRING,
OATYID TYPE STRING,
OARUID TYPE STRING,
REMTYPE TYPE STRING,
BOBJTYPE TYPE STRING,
EVENTTYPE TYPE STRING,
CONTEXT TYPE STRING,
SELGRIDVARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACS_DET_VARIANT_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_CACS_DET_VARIANT_STR-MANDT sy-vline 
WA_CACS_DET_VARIANT_STR-APPL sy-vline 
WA_CACS_DET_VARIANT_STR-VARNAME sy-vline 
WA_CACS_DET_VARIANT_STR-ERNAM sy-vline 
WA_CACS_DET_VARIANT_STR-ERDAT sy-vline 
WA_CACS_DET_VARIANT_STR-ERZZT sy-vline 
WA_CACS_DET_VARIANT_STR-VARDESC sy-vline 
WA_CACS_DET_VARIANT_STR-ENTRY_POINT sy-vline 
WA_CACS_DET_VARIANT_STR-SELTAB sy-vline 
WA_CACS_DET_VARIANT_STR-OLD_DET sy-vline 
WA_CACS_DET_VARIANT_STR-NEW_DET sy-vline 
WA_CACS_DET_VARIANT_STR-BUSI_NOW sy-vline 
WA_CACS_DET_VARIANT_STR-BUSI_OTHER sy-vline 
WA_CACS_DET_VARIANT_STR-BUSI sy-vline 
WA_CACS_DET_VARIANT_STR-TECH_NOW sy-vline 
WA_CACS_DET_VARIANT_STR-TECH_OTHER sy-vline 
WA_CACS_DET_VARIANT_STR-TECH sy-vline 
WA_CACS_DET_VARIANT_STR-FLT_CTRT_TYPE sy-vline 
WA_CACS_DET_VARIANT_STR-FLT_CTRTST_ID sy-vline 
WA_CACS_DET_VARIANT_STR-COMBTP_ID sy-vline 
WA_CACS_DET_VARIANT_STR-CTRTBU_ID sy-vline 
WA_CACS_DET_VARIANT_STR-CTRTST_ID sy-vline 
WA_CACS_DET_VARIANT_STR-AGR_TYP sy-vline 
WA_CACS_DET_VARIANT_STR-STCAGR_ID sy-vline 
WA_CACS_DET_VARIANT_STR-BUSOBJ_TYPE sy-vline 
WA_CACS_DET_VARIANT_STR-SELRULE_ID sy-vline 
WA_CACS_DET_VARIANT_STR-RGOAID sy-vline 
WA_CACS_DET_VARIANT_STR-STMTYPE_ID sy-vline 
WA_CACS_DET_VARIANT_STR-OATYID sy-vline 
WA_CACS_DET_VARIANT_STR-OARUID sy-vline 
WA_CACS_DET_VARIANT_STR-REMTYPE sy-vline 
WA_CACS_DET_VARIANT_STR-BOBJTYPE sy-vline 
WA_CACS_DET_VARIANT_STR-EVENTTYPE sy-vline 
WA_CACS_DET_VARIANT_STR-CONTEXT sy-vline 
WA_CACS_DET_VARIANT_STR-SELGRIDVARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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