ABAP Select data from SAP table /SAPAPO/MSDP_OPT_LOCMATPR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MSDP_OPT_LOCMATPR
*  INTO TABLE @DATA(IT_/SAPAPO/MSDP_OPT_LOCMATPR2).
*--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_/SAPAPO/MSDP_OPT_LOCMATPR INDEX 1 INTO DATA(WA_/SAPAPO/MSDP_OPT_LOCMATPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MSDP_OPT_LOCMATPR>-LOCID = 1.
</SAPAPO/MSDP_OPT_LOCMATPR>-MATID = 1.
</SAPAPO/MSDP_OPT_LOCMATPR>-PRODH = 1.
</SAPAPO/MSDP_OPT_LOCMATPR>-PRODF = 1.
</SAPAPO/MSDP_OPT_LOCMATPR>-PHEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MSDP_OPT_LOCMATPR-SHIPH, sy-vline,
  WA_/SAPAPO/MSDP_OPT_LOCMATPR-SHIPF, sy-vline,
  WA_/SAPAPO/MSDP_OPT_LOCMATPR-PLIFZ, sy-vline,
  WA_/SAPAPO/MSDP_OPT_LOCMATPR-BESKZ, sy-vline,
  WA_/SAPAPO/MSDP_OPT_LOCMATPR-FCOST, sy-vline,
  WA_/SAPAPO/MSDP_OPT_LOCMATPR-COSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MSDP_OPT_LOCMATPR 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_/SAPAPO/MSDP_OPT_LOCMATPR 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_/SAPAPO/MSDP_OPT_LOCMATPR INTO WA_/SAPAPO/MSDP_OPT_LOCMATPR.


*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_/SAPAPO/MSDP_OPT_LOCMATPR_STR, 
LOCID TYPE STRING,
MATID TYPE STRING,
PRODH TYPE STRING,
PRODF TYPE STRING,
PHEXT TYPE STRING,
SHIPH TYPE STRING,
SHIPF TYPE STRING,
PLIFZ TYPE STRING,
BESKZ TYPE STRING,
FCOST TYPE STRING,
COSID TYPE STRING,
BSTRF TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
PULLH TYPE STRING,
PUSHH TYPE STRING,
SNP_IS_HEADER TYPE STRING,
RECTI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MSDP_OPT_LOCMATPR_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_/SAPAPO/MSDP_OPT_LOCMATPR_STR-LOCID sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-MATID sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PRODH sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PRODF sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PHEXT sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-SHIPH sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-SHIPF sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PLIFZ sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-BESKZ sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-FCOST sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-COSID sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-BSTRF sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-BSTMI sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-BSTMA sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PULLH sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-PUSHH sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-SNP_IS_HEADER sy-vline 
WA_/SAPAPO/MSDP_OPT_LOCMATPR_STR-RECTI sy-vline      INTO ld_text SEPARATED BY SPACE.

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