ABAP Select data from SAP table MDG_BS_MAT_S_QMAT_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_MAT_S_QMAT_UI
*  INTO TABLE @DATA(IT_MDG_BS_MAT_S_QMAT_UI2).
*--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_MDG_BS_MAT_S_QMAT_UI INDEX 1 INTO DATA(WA_MDG_BS_MAT_S_QMAT_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_MAT_S_QMAT_UI>-ART = 1.
<MDG_BS_MAT_S_QMAT_UI>-AFR = 1.
<MDG_BS_MAT_S_QMAT_UI>-AKTIV = 1.
<MDG_BS_MAT_S_QMAT_UI>-APA = 1.
<MDG_BS_MAT_S_QMAT_UI>-APP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDG_BS_MAT_S_QMAT_UI-AUFNR_CO, sy-vline,
  WA_MDG_BS_MAT_S_QMAT_UI-AVE, sy-vline,
  WA_MDG_BS_MAT_S_QMAT_UI-CHG, sy-vline,
  WA_MDG_BS_MAT_S_QMAT_UI-CONF, sy-vline,
  WA_MDG_BS_MAT_S_QMAT_UI-DYN, sy-vline,
  WA_MDG_BS_MAT_S_QMAT_UI-DYNREGEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_MAT_S_QMAT_UI 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_MDG_BS_MAT_S_QMAT_UI 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_MDG_BS_MAT_S_QMAT_UI INTO WA_MDG_BS_MAT_S_QMAT_UI.


*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_MDG_BS_MAT_S_QMAT_UI_STR, 
ART TYPE STRING,
AFR TYPE STRING,
AKTIV TYPE STRING,
APA TYPE STRING,
APP TYPE STRING,
AUFNR_CO TYPE STRING,
AVE TYPE STRING,
CHG TYPE STRING,
CONF TYPE STRING,
DYN TYPE STRING,
DYNREGEL TYPE STRING,
EIN TYPE STRING,
FEH TYPE STRING,
HPZ TYPE STRING,
INSMK_Q TYPE STRING,
KZPRFKOST TYPE STRING,
MER TYPE STRING,
MMA TYPE STRING,
MPB TYPE STRING,
MPDAU TYPE STRING,
MST TYPE STRING,
MS_FLAG TYPE STRING,
NKMPR TYPE STRING,
PPL TYPE STRING,
PRFRQ_Q TYPE STRING,
QKZVERF TYPE STRING,
QPMAT TYPE STRING,
SPEZUEBER TYPE STRING,
SPROZ TYPE STRING,
STICHPRVE TYPE STRING,
TLS TYPE STRING,
PCBUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_MAT_S_QMAT_UI_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_MDG_BS_MAT_S_QMAT_UI_STR-ART sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-AFR sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-AKTIV sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-APA sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-APP sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-AUFNR_CO sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-AVE sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-CHG sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-CONF sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-DYN sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-DYNREGEL sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-EIN sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-FEH sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-HPZ sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-INSMK_Q sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-KZPRFKOST sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MER sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MMA sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MPB sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MPDAU sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MST sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-MS_FLAG sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-NKMPR sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-PPL sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-PRFRQ_Q sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-QKZVERF sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-QPMAT sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-SPEZUEBER sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-SPROZ sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-STICHPRVE sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-TLS sy-vline 
WA_MDG_BS_MAT_S_QMAT_UI_STR-PCBUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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