ABAP Select data from SAP table MGWPICTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGWPICTURE
*  INTO TABLE @DATA(IT_MGWPICTURE2).
*--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_MGWPICTURE INDEX 1 INTO DATA(WA_MGWPICTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGWPICTURE>-MANDT = 1.
<MGWPICTURE>-OBJTP = 1.
<MGWPICTURE>-PATH = 1.
<MGWPICTURE>-WIDTH = 1.
<MGWPICTURE>-HEIGHT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGWPICTURE-SUFFIX, sy-vline,
  WA_MGWPICTURE-PATH_TN, sy-vline,
  WA_MGWPICTURE-SUFFIX_TN, sy-vline,
  WA_MGWPICTURE-PATH_SET, sy-vline,
  WA_MGWPICTURE-SUFFIX_SET, sy-vline,
  WA_MGWPICTURE-MAX_SERIE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGWPICTURE 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_MGWPICTURE 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_MGWPICTURE INTO WA_MGWPICTURE.


*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_MGWPICTURE_STR, 
MANDT TYPE STRING,
OBJTP TYPE STRING,
PATH TYPE STRING,
WIDTH TYPE STRING,
HEIGHT TYPE STRING,
SUFFIX TYPE STRING,
PATH_TN TYPE STRING,
SUFFIX_TN TYPE STRING,
PATH_SET TYPE STRING,
SUFFIX_SET TYPE STRING,
MAX_SERIE TYPE STRING,
SEPARATE TYPE STRING,
ACTIVE_TN TYPE STRING,
ACTIVE_SET TYPE STRING,
ACTIVE_FULL TYPE STRING,
ACTIVE_SUB TYPE STRING,
ACTIVE_HTML TYPE STRING,
CHECK_URL TYPE STRING,
PREREAD TYPE STRING,
SUBMOD TYPE STRING,
OBJECTMOD TYPE STRING,
OBJECTGET TYPE STRING,
DEFAULT_TN TYPE STRING,
DEFAULT_FULL TYPE STRING,
DEFAULT_PAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGWPICTURE_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_MGWPICTURE_STR-MANDT sy-vline 
WA_MGWPICTURE_STR-OBJTP sy-vline 
WA_MGWPICTURE_STR-PATH sy-vline 
WA_MGWPICTURE_STR-WIDTH sy-vline 
WA_MGWPICTURE_STR-HEIGHT sy-vline 
WA_MGWPICTURE_STR-SUFFIX sy-vline 
WA_MGWPICTURE_STR-PATH_TN sy-vline 
WA_MGWPICTURE_STR-SUFFIX_TN sy-vline 
WA_MGWPICTURE_STR-PATH_SET sy-vline 
WA_MGWPICTURE_STR-SUFFIX_SET sy-vline 
WA_MGWPICTURE_STR-MAX_SERIE sy-vline 
WA_MGWPICTURE_STR-SEPARATE sy-vline 
WA_MGWPICTURE_STR-ACTIVE_TN sy-vline 
WA_MGWPICTURE_STR-ACTIVE_SET sy-vline 
WA_MGWPICTURE_STR-ACTIVE_FULL sy-vline 
WA_MGWPICTURE_STR-ACTIVE_SUB sy-vline 
WA_MGWPICTURE_STR-ACTIVE_HTML sy-vline 
WA_MGWPICTURE_STR-CHECK_URL sy-vline 
WA_MGWPICTURE_STR-PREREAD sy-vline 
WA_MGWPICTURE_STR-SUBMOD sy-vline 
WA_MGWPICTURE_STR-OBJECTMOD sy-vline 
WA_MGWPICTURE_STR-OBJECTGET sy-vline 
WA_MGWPICTURE_STR-DEFAULT_TN sy-vline 
WA_MGWPICTURE_STR-DEFAULT_FULL sy-vline 
WA_MGWPICTURE_STR-DEFAULT_PAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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