ABAP Select data from SAP table Q0150 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q0150 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 Q0150. 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 Q0150 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_Q0150 TYPE STANDARD TABLE OF Q0150,
      WA_Q0150 TYPE Q0150,
      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: <Q0150> TYPE Q0150.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q0150.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q0150
  INTO TABLE IT_Q0150.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q0150
*  INTO TABLE @DATA(IT_Q01502).
*--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_Q0150 INDEX 1 INTO DATA(WA_Q01502).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q0150 ASSIGNING <Q0150>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q0150>-MSTXT = 1.
<Q0150>-PSTXT = 1.
<Q0150>-MATXT = 1.
<Q0150>-PFTXT = 1.
<Q0150>-METXT = 1.

ENDLOOP.

LOOP AT IT_Q0150 INTO WA_Q0150.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q0150-PETXT, sy-vline,
  WA_Q0150-UETXT, sy-vline,
  WA_Q0150-MCTXT, sy-vline,
  WA_Q0150-PCTXT, sy-vline,
  WA_Q0150-UCTXT, sy-vline,
  WA_Q0150-CCTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q0150 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_Q0150 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_Q0150 INTO WA_Q0150.


*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_Q0150_STR, 
MSTXT TYPE STRING,
PSTXT TYPE STRING,
MATXT TYPE STRING,
PFTXT TYPE STRING,
METXT TYPE STRING,
PETXT TYPE STRING,
UETXT TYPE STRING,
MCTXT TYPE STRING,
PCTXT TYPE STRING,
UCTXT TYPE STRING,
CCTXT TYPE STRING,
SCTXT TYPE STRING,
WAE01 TYPE STRING,
WAE02 TYPE STRING,
WAE03 TYPE STRING,
WAE04 TYPE STRING,
WAE05 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q0150_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_Q0150_STR-MSTXT sy-vline 
WA_Q0150_STR-PSTXT sy-vline 
WA_Q0150_STR-MATXT sy-vline 
WA_Q0150_STR-PFTXT sy-vline 
WA_Q0150_STR-METXT sy-vline 
WA_Q0150_STR-PETXT sy-vline 
WA_Q0150_STR-UETXT sy-vline 
WA_Q0150_STR-MCTXT sy-vline 
WA_Q0150_STR-PCTXT sy-vline 
WA_Q0150_STR-UCTXT sy-vline 
WA_Q0150_STR-CCTXT sy-vline 
WA_Q0150_STR-SCTXT sy-vline 
WA_Q0150_STR-WAE01 sy-vline 
WA_Q0150_STR-WAE02 sy-vline 
WA_Q0150_STR-WAE03 sy-vline 
WA_Q0150_STR-WAE04 sy-vline 
WA_Q0150_STR-WAE05 sy-vline      INTO ld_text SEPARATED BY SPACE.

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