ABAP Select data from SAP table COAT_MASTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COAT_MASTER
*  INTO TABLE @DATA(IT_COAT_MASTER2).
*--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_COAT_MASTER INDEX 1 INTO DATA(WA_COAT_MASTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COAT_MASTER>-MANDT = 1.
<COAT_MASTER>-OBJECT = 1.
<COAT_MASTER>-OBJECT_NAME = 1.
<COAT_MASTER>-TIMESTMP = 1.
<COAT_MASTER>-ATTR_01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COAT_MASTER-ATTR_02, sy-vline,
  WA_COAT_MASTER-ATTR_03, sy-vline,
  WA_COAT_MASTER-ATTR_04, sy-vline,
  WA_COAT_MASTER-ATTR_05, sy-vline,
  WA_COAT_MASTER-ATTR_06, sy-vline,
  WA_COAT_MASTER-ATTR_07, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COAT_MASTER 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_COAT_MASTER 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_COAT_MASTER INTO WA_COAT_MASTER.


*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_COAT_MASTER_STR, 
MANDT TYPE STRING,
OBJECT TYPE STRING,
OBJECT_NAME TYPE STRING,
TIMESTMP TYPE STRING,
ATTR_01 TYPE STRING,
ATTR_02 TYPE STRING,
ATTR_03 TYPE STRING,
ATTR_04 TYPE STRING,
ATTR_05 TYPE STRING,
ATTR_06 TYPE STRING,
ATTR_07 TYPE STRING,
ATTR_08 TYPE STRING,
ATTR_09 TYPE STRING,
ATTR_10 TYPE STRING,
ATTR_11 TYPE STRING,
ATTR_12 TYPE STRING,
ATTR_13 TYPE STRING,
ATTR_14 TYPE STRING,
ATTR_15 TYPE STRING,
ATTR_16 TYPE STRING,
ATTR_17 TYPE STRING,
ATTR_18 TYPE STRING,
ATTR_19 TYPE STRING,
ATTR_20 TYPE STRING,
ATTR_21 TYPE STRING,
ATTR_22 TYPE STRING,
ATTR_23 TYPE STRING,
ATTR_24 TYPE STRING,
ATTR_25 TYPE STRING,
ATTR_26 TYPE STRING,
ATTR_27 TYPE STRING,
ATTR_28 TYPE STRING,
ATTR_29 TYPE STRING,
ATTR_30 TYPE STRING,
ATTR_31 TYPE STRING,
ATTR_32 TYPE STRING,
ATTR_33 TYPE STRING,
ATTR_34 TYPE STRING,
ATTR_35 TYPE STRING,
ATTR_36 TYPE STRING,
ATTR_37 TYPE STRING,
ATTR_38 TYPE STRING,
ATTR_39 TYPE STRING,
ATTR_40 TYPE STRING,
UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COAT_MASTER_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_COAT_MASTER_STR-MANDT sy-vline 
WA_COAT_MASTER_STR-OBJECT sy-vline 
WA_COAT_MASTER_STR-OBJECT_NAME sy-vline 
WA_COAT_MASTER_STR-TIMESTMP sy-vline 
WA_COAT_MASTER_STR-ATTR_01 sy-vline 
WA_COAT_MASTER_STR-ATTR_02 sy-vline 
WA_COAT_MASTER_STR-ATTR_03 sy-vline 
WA_COAT_MASTER_STR-ATTR_04 sy-vline 
WA_COAT_MASTER_STR-ATTR_05 sy-vline 
WA_COAT_MASTER_STR-ATTR_06 sy-vline 
WA_COAT_MASTER_STR-ATTR_07 sy-vline 
WA_COAT_MASTER_STR-ATTR_08 sy-vline 
WA_COAT_MASTER_STR-ATTR_09 sy-vline 
WA_COAT_MASTER_STR-ATTR_10 sy-vline 
WA_COAT_MASTER_STR-ATTR_11 sy-vline 
WA_COAT_MASTER_STR-ATTR_12 sy-vline 
WA_COAT_MASTER_STR-ATTR_13 sy-vline 
WA_COAT_MASTER_STR-ATTR_14 sy-vline 
WA_COAT_MASTER_STR-ATTR_15 sy-vline 
WA_COAT_MASTER_STR-ATTR_16 sy-vline 
WA_COAT_MASTER_STR-ATTR_17 sy-vline 
WA_COAT_MASTER_STR-ATTR_18 sy-vline 
WA_COAT_MASTER_STR-ATTR_19 sy-vline 
WA_COAT_MASTER_STR-ATTR_20 sy-vline 
WA_COAT_MASTER_STR-ATTR_21 sy-vline 
WA_COAT_MASTER_STR-ATTR_22 sy-vline 
WA_COAT_MASTER_STR-ATTR_23 sy-vline 
WA_COAT_MASTER_STR-ATTR_24 sy-vline 
WA_COAT_MASTER_STR-ATTR_25 sy-vline 
WA_COAT_MASTER_STR-ATTR_26 sy-vline 
WA_COAT_MASTER_STR-ATTR_27 sy-vline 
WA_COAT_MASTER_STR-ATTR_28 sy-vline 
WA_COAT_MASTER_STR-ATTR_29 sy-vline 
WA_COAT_MASTER_STR-ATTR_30 sy-vline 
WA_COAT_MASTER_STR-ATTR_31 sy-vline 
WA_COAT_MASTER_STR-ATTR_32 sy-vline 
WA_COAT_MASTER_STR-ATTR_33 sy-vline 
WA_COAT_MASTER_STR-ATTR_34 sy-vline 
WA_COAT_MASTER_STR-ATTR_35 sy-vline 
WA_COAT_MASTER_STR-ATTR_36 sy-vline 
WA_COAT_MASTER_STR-ATTR_37 sy-vline 
WA_COAT_MASTER_STR-ATTR_38 sy-vline 
WA_COAT_MASTER_STR-ATTR_39 sy-vline 
WA_COAT_MASTER_STR-ATTR_40 sy-vline 
WA_COAT_MASTER_STR-UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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