ABAP Select data from SAP table /MDGMM/_S_MM_ES_QMATBASIC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MDGMM/_S_MM_ES_QMATBASIC 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 /MDGMM/_S_MM_ES_QMATBASIC. 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 /MDGMM/_S_MM_ES_QMATBASIC 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_/MDGMM/_S_MM_ES_QMATBASIC TYPE STANDARD TABLE OF /MDGMM/_S_MM_ES_QMATBASIC,
      WA_/MDGMM/_S_MM_ES_QMATBASIC TYPE /MDGMM/_S_MM_ES_QMATBASIC,
      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: </MDGMM/_S_MM_ES_QMATBASIC> TYPE /MDGMM/_S_MM_ES_QMATBASIC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MDGMM/_S_MM_ES_QMATBASIC
  INTO TABLE IT_/MDGMM/_S_MM_ES_QMATBASIC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MDGMM/_S_MM_ES_QMATBASIC
*  INTO TABLE @DATA(IT_/MDGMM/_S_MM_ES_QMATBASIC2).
*--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_/MDGMM/_S_MM_ES_QMATBASIC INDEX 1 INTO DATA(WA_/MDGMM/_S_MM_ES_QMATBASIC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MDGMM/_S_MM_ES_QMATBASIC ASSIGNING </MDGMM/_S_MM_ES_QMATBASIC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MDGMM/_S_MM_ES_QMATBASIC>-USMD_ACTIVE = 1.
</MDGMM/_S_MM_ES_QMATBASIC>-SEARCH_RANK = 1.
</MDGMM/_S_MM_ES_QMATBASIC>-ART = 1.
</MDGMM/_S_MM_ES_QMATBASIC>-MATERIAL = 1.
</MDGMM/_S_MM_ES_QMATBASIC>-WERKS = 1.

ENDLOOP.

LOOP AT IT_/MDGMM/_S_MM_ES_QMATBASIC INTO WA_/MDGMM/_S_MM_ES_QMATBASIC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MDGMM/_S_MM_ES_QMATBASIC-AFR, sy-vline,
  WA_/MDGMM/_S_MM_ES_QMATBASIC-AKTIV, sy-vline,
  WA_/MDGMM/_S_MM_ES_QMATBASIC-APA, sy-vline,
  WA_/MDGMM/_S_MM_ES_QMATBASIC-APP, sy-vline,
  WA_/MDGMM/_S_MM_ES_QMATBASIC-AUFNR_CO, sy-vline,
  WA_/MDGMM/_S_MM_ES_QMATBASIC-AVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MDGMM/_S_MM_ES_QMATBASIC 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_/MDGMM/_S_MM_ES_QMATBASIC 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_/MDGMM/_S_MM_ES_QMATBASIC INTO WA_/MDGMM/_S_MM_ES_QMATBASIC.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/MDGMM/_S_MM_ES_QMATBASIC-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDGMM/_S_MM_ES_QMATBASIC-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDGMM/_S_MM_ES_QMATBASIC-AUFNR_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDGMM/_S_MM_ES_QMATBASIC-AUFNR_CO.
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_/MDGMM/_S_MM_ES_QMATBASIC_STR, 
USMD_ACTIVE TYPE STRING,
SEARCH_RANK TYPE STRING,
ART TYPE STRING,
MATERIAL TYPE STRING,
WERKS 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,
HPZ TYPE STRING,
INSMK_Q TYPE STRING,
KZPRFKOST TYPE STRING,
MER TYPE STRING,
MPB TYPE STRING,
MPDAU TYPE STRING,
MST TYPE STRING,
MS_FLAG TYPE STRING,
PPL TYPE STRING,
QKZVERF TYPE STRING,
QPMAT TYPE STRING,
SPEZUEBER TYPE STRING,
SPROZ TYPE STRING,
STICHPRVE TYPE STRING,
TLS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MDGMM/_S_MM_ES_QMATBASIC_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_/MDGMM/_S_MM_ES_QMATBASIC_STR-USMD_ACTIVE sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-SEARCH_RANK sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-ART sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MATERIAL sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-WERKS sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-AFR sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-AKTIV sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-APA sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-APP sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-AUFNR_CO sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-AVE sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-CHG sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-CONF sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-DYN sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-DYNREGEL sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-EIN sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-HPZ sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-INSMK_Q sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-KZPRFKOST sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MER sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MPB sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MPDAU sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MST sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-MS_FLAG sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-PPL sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-QKZVERF sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-QPMAT sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-SPEZUEBER sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-SPROZ sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-STICHPRVE sy-vline 
WA_/MDGMM/_S_MM_ES_QMATBASIC_STR-TLS sy-vline      INTO ld_text SEPARATED BY SPACE.

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