ABAP Select data from SAP table PACMLDCCASCAI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PACMLDCCASCAI
*  INTO TABLE @DATA(IT_PACMLDCCASCAI2).
*--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_PACMLDCCASCAI INDEX 1 INTO DATA(WA_PACMLDCCASCAI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PACMLDCCASCAI>-MANDT = 1.
<PACMLDCCASCAI>-APPLICATIONDOCUMENT = 1.
<PACMLDCCASCAI>-APPLICATIONDOCUMENTITEM = 1.
<PACMLDCCASCAI>-SIDE = 1.
<PACMLDCCASCAI>-SUBITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PACMLDCCASCAI-CONTRAPPITMCAT, sy-vline,
  WA_PACMLDCCASCAI-LDCID, sy-vline,
  WA_PACMLDCCASCAI-LOADDATACAPTUREEVENTTYPE, sy-vline,
  WA_PACMLDCCASCAI-MODEOFTRANSPORT, sy-vline,
  WA_PACMLDCCASCAI-CMMDTYTRANSPTDRIVERID, sy-vline,
  WA_PACMLDCCASCAI-VEHICLELICENSEPLATENUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PACMLDCCASCAI 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_PACMLDCCASCAI 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_PACMLDCCASCAI INTO WA_PACMLDCCASCAI.


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

*Conversion exit ALPHA, internal->external for field LDCID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PACMLDCCASCAI-LDCID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PACMLDCCASCAI-LDCID.
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_PACMLDCCASCAI_STR, 
MANDT TYPE STRING,
APPLICATIONDOCUMENT TYPE STRING,
APPLICATIONDOCUMENTITEM TYPE STRING,
SIDE TYPE STRING,
SUBITEM TYPE STRING,
CONTRAPPITMCAT TYPE STRING,
LDCID TYPE STRING,
LOADDATACAPTUREEVENTTYPE TYPE STRING,
MODEOFTRANSPORT TYPE STRING,
CMMDTYTRANSPTDRIVERID TYPE STRING,
VEHICLELICENSEPLATENUMBER TYPE STRING,
VEHICLEID TYPE STRING,
TRUCKRAILBARGEID TYPE STRING,
CMMDTYTRANSPTVESSELID TYPE STRING,
LOADDATACAPTUREEVENTDATETIME TYPE STRING,
APPLICATIONSTATUSOBJECT TYPE STRING,
PLANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PACMLDCCASCAI_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_PACMLDCCASCAI_STR-MANDT sy-vline 
WA_PACMLDCCASCAI_STR-APPLICATIONDOCUMENT sy-vline 
WA_PACMLDCCASCAI_STR-APPLICATIONDOCUMENTITEM sy-vline 
WA_PACMLDCCASCAI_STR-SIDE sy-vline 
WA_PACMLDCCASCAI_STR-SUBITEM sy-vline 
WA_PACMLDCCASCAI_STR-CONTRAPPITMCAT sy-vline 
WA_PACMLDCCASCAI_STR-LDCID sy-vline 
WA_PACMLDCCASCAI_STR-LOADDATACAPTUREEVENTTYPE sy-vline 
WA_PACMLDCCASCAI_STR-MODEOFTRANSPORT sy-vline 
WA_PACMLDCCASCAI_STR-CMMDTYTRANSPTDRIVERID sy-vline 
WA_PACMLDCCASCAI_STR-VEHICLELICENSEPLATENUMBER sy-vline 
WA_PACMLDCCASCAI_STR-VEHICLEID sy-vline 
WA_PACMLDCCASCAI_STR-TRUCKRAILBARGEID sy-vline 
WA_PACMLDCCASCAI_STR-CMMDTYTRANSPTVESSELID sy-vline 
WA_PACMLDCCASCAI_STR-LOADDATACAPTUREEVENTDATETIME sy-vline 
WA_PACMLDCCASCAI_STR-APPLICATIONSTATUSOBJECT sy-vline 
WA_PACMLDCCASCAI_STR-PLANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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