ABAP Select data from SAP table TCYMPP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCYMPP
*  INTO TABLE @DATA(IT_TCYMPP2).
*--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_TCYMPP INDEX 1 INTO DATA(WA_TCYMPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCYMPP>-MANDT = 1.
<TCYMPP>-MPPPRO_ID = 1.
<TCYMPP>-PEAVAICAP = 1.
<TCYMPP>-PEOVRLOAD = 1.
<TCYMPP>-ALLOCWRK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCYMPP-PERTYPE, sy-vline,
  WA_TCYMPP-MIXED_PERIODS, sy-vline,
  WA_TCYMPP-PLNGTIMT, sy-vline,
  WA_TCYMPP-PLNGDATF, sy-vline,
  WA_TCYMPP-PLNGDATT, sy-vline,
  WA_TCYMPP-DSTRBWRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCYMPP 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_TCYMPP 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_TCYMPP INTO WA_TCYMPP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TCYMPP_STR, 
MANDT TYPE STRING,
MPPPRO_ID TYPE STRING,
PEAVAICAP TYPE STRING,
PEOVRLOAD TYPE STRING,
ALLOCWRK TYPE STRING,
PERTYPE TYPE STRING,
MIXED_PERIODS TYPE STRING,
PLNGTIMT TYPE STRING,
PLNGDATF TYPE STRING,
PLNGDATT TYPE STRING,
DSTRBWRK TYPE STRING,
OUTPUTLEN TYPE STRING,
SHOW_NETWORK TYPE STRING,
FISCAL_YEAR_VAR TYPE STRING,
CALENDAR_ID TYPE STRING,
PERSONS TYPE STRING,
P_LE_PERCENT TYPE STRING,
P_LE_COLOUR TYPE STRING,
P_GT_PERCENT TYPE STRING,
P_GT_COLOUR TYPE STRING,
P_GT_LE_COLOUR TYPE STRING,
P_COLOUR_1 TYPE STRING,
P_COLOUR_2 TYPE STRING,
P_COLOUR_3 TYPE STRING,
A_LE_PERCENT TYPE STRING,
A_LE_COLOUR TYPE STRING,
A_GT_PERCENT TYPE STRING,
A_GT_COLOUR TYPE STRING,
A_GT_LE_COLOUR TYPE STRING,
A_COLOUR_1 TYPE STRING,
A_COLOUR_2 TYPE STRING,
A_COLOUR_3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCYMPP_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_TCYMPP_STR-MANDT sy-vline 
WA_TCYMPP_STR-MPPPRO_ID sy-vline 
WA_TCYMPP_STR-PEAVAICAP sy-vline 
WA_TCYMPP_STR-PEOVRLOAD sy-vline 
WA_TCYMPP_STR-ALLOCWRK sy-vline 
WA_TCYMPP_STR-PERTYPE sy-vline 
WA_TCYMPP_STR-MIXED_PERIODS sy-vline 
WA_TCYMPP_STR-PLNGTIMT sy-vline 
WA_TCYMPP_STR-PLNGDATF sy-vline 
WA_TCYMPP_STR-PLNGDATT sy-vline 
WA_TCYMPP_STR-DSTRBWRK sy-vline 
WA_TCYMPP_STR-OUTPUTLEN sy-vline 
WA_TCYMPP_STR-SHOW_NETWORK sy-vline 
WA_TCYMPP_STR-FISCAL_YEAR_VAR sy-vline 
WA_TCYMPP_STR-CALENDAR_ID sy-vline 
WA_TCYMPP_STR-PERSONS sy-vline 
WA_TCYMPP_STR-P_LE_PERCENT sy-vline 
WA_TCYMPP_STR-P_LE_COLOUR sy-vline 
WA_TCYMPP_STR-P_GT_PERCENT sy-vline 
WA_TCYMPP_STR-P_GT_COLOUR sy-vline 
WA_TCYMPP_STR-P_GT_LE_COLOUR sy-vline 
WA_TCYMPP_STR-P_COLOUR_1 sy-vline 
WA_TCYMPP_STR-P_COLOUR_2 sy-vline 
WA_TCYMPP_STR-P_COLOUR_3 sy-vline 
WA_TCYMPP_STR-A_LE_PERCENT sy-vline 
WA_TCYMPP_STR-A_LE_COLOUR sy-vline 
WA_TCYMPP_STR-A_GT_PERCENT sy-vline 
WA_TCYMPP_STR-A_GT_COLOUR sy-vline 
WA_TCYMPP_STR-A_GT_LE_COLOUR sy-vline 
WA_TCYMPP_STR-A_COLOUR_1 sy-vline 
WA_TCYMPP_STR-A_COLOUR_2 sy-vline 
WA_TCYMPP_STR-A_COLOUR_3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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