ABAP Select data from SAP table COML_PRCAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COML_PRCAT
*  INTO TABLE @DATA(IT_COML_PRCAT2).
*--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_COML_PRCAT INDEX 1 INTO DATA(WA_COML_PRCAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COML_PRCAT>-PRODUCT_TYPE = 1.
<COML_PRCAT>-AUTH_GROUP = 1.
<COML_PRCAT>-RESPONSIBLE_PERS = 1.
<COML_PRCAT>-OBJECT_FAMILY = 1.
<COML_PRCAT>-NON_SELECTABLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COML_PRCAT-ID_TYPE, sy-vline,
  WA_COML_PRCAT-NO_DOCUMENTS, sy-vline,
  WA_COML_PRCAT-NO_PRICE_COND, sy-vline,
  WA_COML_PRCAT-PARTNER_DET_PROC, sy-vline,
  WA_COML_PRCAT-COMPETITOR_PROD, sy-vline,
  WA_COML_PRCAT-ECM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COML_PRCAT 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_COML_PRCAT 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_COML_PRCAT INTO WA_COML_PRCAT.


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

*Conversion exit PRID1, internal->external for field PRODUCT_TEMPLATE_ID
CALL FUNCTION 'CONVERSION_EXIT_PRID1_OUTPUT'
  EXPORTING
    input =                      WA_COML_PRCAT-PRODUCT_TEMPLATE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COML_PRCAT-PRODUCT_TEMPLATE_ID.
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_COML_PRCAT_STR, 
PRODUCT_TYPE TYPE STRING,
AUTH_GROUP TYPE STRING,
RESPONSIBLE_PERS TYPE STRING,
OBJECT_FAMILY TYPE STRING,
NON_SELECTABLE TYPE STRING,
ID_TYPE TYPE STRING,
NO_DOCUMENTS TYPE STRING,
NO_PRICE_COND TYPE STRING,
PARTNER_DET_PROC TYPE STRING,
COMPETITOR_PROD TYPE STRING,
ECM TYPE STRING,
PRODUCT_TEMPLATE TYPE STRING,
AUTH_GROUP_T TYPE STRING,
RESPONSIBLE_NAME_T TYPE STRING,
RESPONSIBLE_NAME_I TYPE STRING,
OBJECT_FAMILY_T TYPE STRING,
SELECTABLE TYPE STRING,
DOCUMENTS TYPE STRING,
PRICE_COND TYPE STRING,
PRODUCT_TEMPLATE_ID TYPE STRING,
PRODUCT_TEMPLATE_DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COML_PRCAT_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_COML_PRCAT_STR-PRODUCT_TYPE sy-vline 
WA_COML_PRCAT_STR-AUTH_GROUP sy-vline 
WA_COML_PRCAT_STR-RESPONSIBLE_PERS sy-vline 
WA_COML_PRCAT_STR-OBJECT_FAMILY sy-vline 
WA_COML_PRCAT_STR-NON_SELECTABLE sy-vline 
WA_COML_PRCAT_STR-ID_TYPE sy-vline 
WA_COML_PRCAT_STR-NO_DOCUMENTS sy-vline 
WA_COML_PRCAT_STR-NO_PRICE_COND sy-vline 
WA_COML_PRCAT_STR-PARTNER_DET_PROC sy-vline 
WA_COML_PRCAT_STR-COMPETITOR_PROD sy-vline 
WA_COML_PRCAT_STR-ECM sy-vline 
WA_COML_PRCAT_STR-PRODUCT_TEMPLATE sy-vline 
WA_COML_PRCAT_STR-AUTH_GROUP_T sy-vline 
WA_COML_PRCAT_STR-RESPONSIBLE_NAME_T sy-vline 
WA_COML_PRCAT_STR-RESPONSIBLE_NAME_I sy-vline 
WA_COML_PRCAT_STR-OBJECT_FAMILY_T sy-vline 
WA_COML_PRCAT_STR-SELECTABLE sy-vline 
WA_COML_PRCAT_STR-DOCUMENTS sy-vline 
WA_COML_PRCAT_STR-PRICE_COND sy-vline 
WA_COML_PRCAT_STR-PRODUCT_TEMPLATE_ID sy-vline 
WA_COML_PRCAT_STR-PRODUCT_TEMPLATE_DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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