ABAP Select data from SAP table CACS_S_ALLOC_VERS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CACS_S_ALLOC_VERS 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_S_ALLOC_VERS. 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_S_ALLOC_VERS 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_S_ALLOC_VERS TYPE STANDARD TABLE OF CACS_S_ALLOC_VERS,
      WA_CACS_S_ALLOC_VERS TYPE CACS_S_ALLOC_VERS,
      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_S_ALLOC_VERS> TYPE CACS_S_ALLOC_VERS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACS_S_ALLOC_VERS
*  INTO TABLE @DATA(IT_CACS_S_ALLOC_VERS2).
*--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_S_ALLOC_VERS INDEX 1 INTO DATA(WA_CACS_S_ALLOC_VERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACS_S_ALLOC_VERS>-MANDT = 1.
<CACS_S_ALLOC_VERS>-APPL = 1.
<CACS_S_ALLOC_VERS>-CTRTBU_ID = 1.
<CACS_S_ALLOC_VERS>-VERS_CTRTBU = 1.
<CACS_S_ALLOC_VERS>-CT_BUSI_BEGIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACS_S_ALLOC_VERS-CT_BUSI_END, sy-vline,
  WA_CACS_S_ALLOC_VERS-CT_TECH_BEGIN, sy-vline,
  WA_CACS_S_ALLOC_VERS-CT_TECH_END, sy-vline,
  WA_CACS_S_ALLOC_VERS-REMAGR_ID, sy-vline,
  WA_CACS_S_ALLOC_VERS-REMRU_ID, sy-vline,
  WA_CACS_S_ALLOC_VERS-VERS_REMARU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACS_S_ALLOC_VERS 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_S_ALLOC_VERS 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_S_ALLOC_VERS INTO WA_CACS_S_ALLOC_VERS.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LOWPARCTRTBU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACS_S_ALLOC_VERS-LOWPARCTRTBU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACS_S_ALLOC_VERS-LOWPARCTRTBU.
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_S_ALLOC_VERS_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
CTRTBU_ID TYPE STRING,
VERS_CTRTBU TYPE STRING,
CT_BUSI_BEGIN TYPE STRING,
CT_BUSI_END TYPE STRING,
CT_TECH_BEGIN TYPE STRING,
CT_TECH_END TYPE STRING,
REMAGR_ID TYPE STRING,
REMRU_ID TYPE STRING,
VERS_REMARU TYPE STRING,
WARRAGR_ID TYPE STRING,
WARRU_ID TYPE STRING,
VERS_WARRU TYPE STRING,
TRGCASAGR_ID TYPE STRING,
TRGCASRU_ID TYPE STRING,
VERS_TRIGCAS TYPE STRING,
STMAGR_ID TYPE STRING,
STMRU_ID TYPE STRING,
VERS_STMRU TYPE STRING,
RESAGR_ID TYPE STRING,
RES_RULE_ID TYPE STRING,
VERS_RESRULE TYPE STRING,
IDENTNUMBER TYPE STRING,
VERS_CORR TYPE STRING,
KORRART_NR TYPE STRING,
VERS_COREX TYPE STRING,
BUCAGR_ID TYPE STRING,
VERS_BUCAGR TYPE STRING,
CTRTPAR_ID TYPE STRING,
SUPPARCTRTBU TYPE STRING,
VERS_CTRTPAR TYPE STRING,
LOWPARCTRTBU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACS_S_ALLOC_VERS_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_S_ALLOC_VERS_STR-MANDT sy-vline 
WA_CACS_S_ALLOC_VERS_STR-APPL sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CTRTBU_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_CTRTBU sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CT_BUSI_BEGIN sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CT_BUSI_END sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CT_TECH_BEGIN sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CT_TECH_END sy-vline 
WA_CACS_S_ALLOC_VERS_STR-REMAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-REMRU_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_REMARU sy-vline 
WA_CACS_S_ALLOC_VERS_STR-WARRAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-WARRU_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_WARRU sy-vline 
WA_CACS_S_ALLOC_VERS_STR-TRGCASAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-TRGCASRU_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_TRIGCAS sy-vline 
WA_CACS_S_ALLOC_VERS_STR-STMAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-STMRU_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_STMRU sy-vline 
WA_CACS_S_ALLOC_VERS_STR-RESAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-RES_RULE_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_RESRULE sy-vline 
WA_CACS_S_ALLOC_VERS_STR-IDENTNUMBER sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_CORR sy-vline 
WA_CACS_S_ALLOC_VERS_STR-KORRART_NR sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_COREX sy-vline 
WA_CACS_S_ALLOC_VERS_STR-BUCAGR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_BUCAGR sy-vline 
WA_CACS_S_ALLOC_VERS_STR-CTRTPAR_ID sy-vline 
WA_CACS_S_ALLOC_VERS_STR-SUPPARCTRTBU sy-vline 
WA_CACS_S_ALLOC_VERS_STR-VERS_CTRTPAR sy-vline 
WA_CACS_S_ALLOC_VERS_STR-LOWPARCTRTBU sy-vline      INTO ld_text SEPARATED BY SPACE.

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