ABAP Select data from SAP table IDCMLHU_14CALPOS_MIG_CHAR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDCMLHU_14CALPOS_MIG_CHAR 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 IDCMLHU_14CALPOS_MIG_CHAR. 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 IDCMLHU_14CALPOS_MIG_CHAR 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_IDCMLHU_14CALPOS_MIG_CHAR TYPE STANDARD TABLE OF IDCMLHU_14CALPOS_MIG_CHAR,
      WA_IDCMLHU_14CALPOS_MIG_CHAR TYPE IDCMLHU_14CALPOS_MIG_CHAR,
      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: <IDCMLHU_14CALPOS_MIG_CHAR> TYPE IDCMLHU_14CALPOS_MIG_CHAR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDCMLHU_14CALPOS_MIG_CHAR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDCMLHU_14CALPOS_MIG_CHAR
  INTO TABLE IT_IDCMLHU_14CALPOS_MIG_CHAR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCMLHU_14CALPOS_MIG_CHAR
*  INTO TABLE @DATA(IT_IDCMLHU_14CALPOS_MIG_CHAR2).
*--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_IDCMLHU_14CALPOS_MIG_CHAR INDEX 1 INTO DATA(WA_IDCMLHU_14CALPOS_MIG_CHAR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDCMLHU_14CALPOS_MIG_CHAR ASSIGNING <IDCMLHU_14CALPOS_MIG_CHAR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCMLHU_14CALPOS_MIG_CHAR>-RANL = 1.
<IDCMLHU_14CALPOS_MIG_CHAR>-CATEGORY = 1.
<IDCMLHU_14CALPOS_MIG_CHAR>-RBELKPFD = 1.
<IDCMLHU_14CALPOS_MIG_CHAR>-RPOSNR = 1.
<IDCMLHU_14CALPOS_MIG_CHAR>-EXCLUDED = 1.

ENDLOOP.

LOOP AT IT_IDCMLHU_14CALPOS_MIG_CHAR INTO WA_IDCMLHU_14CALPOS_MIG_CHAR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCMLHU_14CALPOS_MIG_CHAR-SBEWART, sy-vline,
  WA_IDCMLHU_14CALPOS_MIG_CHAR-DBUDAT, sy-vline,
  WA_IDCMLHU_14CALPOS_MIG_CHAR-DFAELL, sy-vline,
  WA_IDCMLHU_14CALPOS_MIG_CHAR-DDISPO, sy-vline,
  WA_IDCMLHU_14CALPOS_MIG_CHAR-DATE_FROM, sy-vline,
  WA_IDCMLHU_14CALPOS_MIG_CHAR-DATE_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCMLHU_14CALPOS_MIG_CHAR 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_IDCMLHU_14CALPOS_MIG_CHAR 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_IDCMLHU_14CALPOS_MIG_CHAR INTO WA_IDCMLHU_14CALPOS_MIG_CHAR.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_14CALPOS_MIG_CHAR-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_14CALPOS_MIG_CHAR-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RBELKPFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCMLHU_14CALPOS_MIG_CHAR-RBELKPFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCMLHU_14CALPOS_MIG_CHAR-RBELKPFD.
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_IDCMLHU_14CALPOS_MIG_CHAR_STR, 
RANL TYPE STRING,
CATEGORY TYPE STRING,
RBELKPFD TYPE STRING,
RPOSNR TYPE STRING,
EXCLUDED TYPE STRING,
SBEWART TYPE STRING,
DBUDAT TYPE STRING,
DFAELL TYPE STRING,
DDISPO TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
NUM_DAYS TYPE STRING,
SBWHR TYPE STRING,
OVRD_AMNT TYPE STRING,
SKOART TYPE STRING,
REF_SKOART TYPE STRING,
DGUEL_KK TYPE STRING,
DGUEL_KP TYPE STRING,
SZBMETH TYPE STRING,
JPROZR TYPE STRING,
SZSREF TYPE STRING,
PKOND TYPE STRING,
SROUND TYPE STRING,
INTEREST_RATE TYPE STRING,
SUM_PERC_RATE TYPE STRING,
CALC_AMNT TYPE STRING,
SPLANIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCMLHU_14CALPOS_MIG_CHAR_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_IDCMLHU_14CALPOS_MIG_CHAR_STR-RANL sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-CATEGORY sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-RBELKPFD sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-RPOSNR sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-EXCLUDED sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SBEWART sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DBUDAT sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DFAELL sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DDISPO sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DATE_FROM sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DATE_TO sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-NUM_DAYS sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SBWHR sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-OVRD_AMNT sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SKOART sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-REF_SKOART sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DGUEL_KK sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-DGUEL_KP sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SZBMETH sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-JPROZR sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SZSREF sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-PKOND sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SROUND sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-INTEREST_RATE sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SUM_PERC_RATE sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-CALC_AMNT sy-vline 
WA_IDCMLHU_14CALPOS_MIG_CHAR_STR-SPLANIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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