ABAP Select data from SAP table TCM_S_POST_MAPPING_CUSTINVMNT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCM_S_POST_MAPPING_CUSTINVMNT
*  INTO TABLE @DATA(IT_TCM_S_POST_MAPPING_CUSTINVMNT2).
*--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_TCM_S_POST_MAPPING_CUSTINVMNT INDEX 1 INTO DATA(WA_TCM_S_POST_MAPPING_CUSTINVMNT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCM_S_POST_MAPPING_CUSTINVMNT>-TCM_CUST_FRTINV = 1.
<TCM_S_POST_MAPPING_CUSTINVMNT>-LOGSYS = 1.
<TCM_S_POST_MAPPING_CUSTINVMNT>-CFIR_ID = 1.
<TCM_S_POST_MAPPING_CUSTINVMNT>-TYPE_CODE = 1.
<TCM_S_POST_MAPPING_CUSTINVMNT>-INT_TYPE_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCM_S_POST_MAPPING_CUSTINVMNT-TCM_SALES_ORG, sy-vline,
  WA_TCM_S_POST_MAPPING_CUSTINVMNT-COMP_CODE, sy-vline,
  WA_TCM_S_POST_MAPPING_CUSTINVMNT-SALES_ORG, sy-vline,
  WA_TCM_S_POST_MAPPING_CUSTINVMNT-DISTR_CHANNEL, sy-vline,
  WA_TCM_S_POST_MAPPING_CUSTINVMNT-DIVISION, sy-vline,
  WA_TCM_S_POST_MAPPING_CUSTINVMNT-KALSM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCM_S_POST_MAPPING_CUSTINVMNT 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_TCM_S_POST_MAPPING_CUSTINVMNT 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_TCM_S_POST_MAPPING_CUSTINVMNT INTO WA_TCM_S_POST_MAPPING_CUSTINVMNT.


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

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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_TCM_S_POST_MAPPING_CUSTINVMNT-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TCM_S_POST_MAPPING_CUSTINVMNT-AUART.
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_TCM_S_POST_MAPPING_CUSTINVMNT_STR, 
TCM_CUST_FRTINV TYPE STRING,
LOGSYS TYPE STRING,
CFIR_ID TYPE STRING,
TYPE_CODE TYPE STRING,
INT_TYPE_CODE TYPE STRING,
TCM_SALES_ORG TYPE STRING,
COMP_CODE TYPE STRING,
SALES_ORG TYPE STRING,
DISTR_CHANNEL TYPE STRING,
DIVISION TYPE STRING,
KALSM TYPE STRING,
PLANT TYPE STRING,
FKART TYPE STRING,
AUART TYPE STRING,
PSTYV TYPE STRING,
NUMKI TYPE STRING,
PARTY TYPE STRING,
LOCATION TYPE STRING,
TOTAL_AMOUNT TYPE STRING,
DATE_TIME_PERIOD TYPE STRING,
BTD_REF TYPE STRING,
TRANSP_CHARGES TYPE STRING,
CASH_DISCOUNT TYPE STRING,
CASHDISCOUNT_TERMD_CD TYPE STRING,
PAYMNTBALNDT TYPE STRING,
DAYSVALUEMAX TYPE STRING,
PERCENTMAX TYPE STRING,
DAYSVALUENOR TYPE STRING,
PERCENTNOR TYPE STRING,
FULLPAYMDUEDY TYPE STRING,
EXCHANGE_RATE TYPE STRING,
CURRENCY TYPE STRING,
BTD_REFERENCE TYPE STRING,
LOCATION TYPE STRING,
TCM_ELEMENT TYPE STRING,
ITEM TYPE STRING,
SENDER_PARTY TYPE STRING,
CFIR_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCM_S_POST_MAPPING_CUSTINVMNT_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_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TCM_CUST_FRTINV sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-LOGSYS sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-CFIR_ID sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TYPE_CODE sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-INT_TYPE_CODE sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TCM_SALES_ORG sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-COMP_CODE sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-SALES_ORG sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-DISTR_CHANNEL sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-DIVISION sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-KALSM sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PLANT sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-FKART sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-AUART sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PSTYV sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-NUMKI sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PARTY sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-LOCATION sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TOTAL_AMOUNT sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-DATE_TIME_PERIOD sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-BTD_REF sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TRANSP_CHARGES sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-CASH_DISCOUNT sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-CASHDISCOUNT_TERMD_CD sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PAYMNTBALNDT sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-DAYSVALUEMAX sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PERCENTMAX sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-DAYSVALUENOR sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-PERCENTNOR sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-FULLPAYMDUEDY sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-EXCHANGE_RATE sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-CURRENCY sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-BTD_REFERENCE sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-LOCATION sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-TCM_ELEMENT sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-ITEM sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-SENDER_PARTY sy-vline 
WA_TCM_S_POST_MAPPING_CUSTINVMNT_STR-CFIR_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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