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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/SNPOPLPR
*  INTO TABLE @DATA(IT_/SAPAPO/SNPOPLPR2).
*--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/SNPOPLPR INDEX 1 INTO DATA(WA_/SAPAPO/SNPOPLPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/SNPOPLPR>-MANDT = 1.
</SAPAPO/SNPOPLPR>-SESSIONID = 1.
</SAPAPO/SNPOPLPR>-LINE_NO = 1.
</SAPAPO/SNPOPLPR>-LOCID = 1.
</SAPAPO/SNPOPLPR>-MATID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/SNPOPLPR-BUCKE, sy-vline,
  WA_/SAPAPO/SNPOPLPR-SAFTY, sy-vline,
  WA_/SAPAPO/SNPOPLPR-MAXST, sy-vline,
  WA_/SAPAPO/SNPOPLPR-SAPEN, sy-vline,
  WA_/SAPAPO/SNPOPLPR-STPEN, sy-vline,
  WA_/SAPAPO/SNPOPLPR-FPROD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/SNPOPLPR 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/SNPOPLPR 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/SNPOPLPR INTO WA_/SAPAPO/SNPOPLPR.


*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/SNPOPLPR_STR, 
MANDT TYPE STRING,
SESSIONID TYPE STRING,
LINE_NO TYPE STRING,
LOCID TYPE STRING,
MATID TYPE STRING,
BUCKE TYPE STRING,
SAFTY TYPE STRING,
MAXST TYPE STRING,
SAPEN TYPE STRING,
STPEN TYPE STRING,
FPROD TYPE STRING,
SVTTY TYPE STRING,
FDIST TYPE STRING,
FSUBST TYPE STRING,
FPREC TYPE STRING,
FDREC TYPE STRING,
FSREC TYPE STRING,
FPDEM TYPE STRING,
FDDEM TYPE STRING,
FSDEM TYPE STRING,
TARST TYPE STRING,
TARDS TYPE STRING,
TRPEN TYPE STRING,
MAXDS TYPE STRING,
STCOS TYPE STRING,
PRCOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/SNPOPLPR_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/SNPOPLPR_STR-MANDT sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-SESSIONID sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-LINE_NO sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-LOCID sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-MATID sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-BUCKE sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-SAFTY sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-MAXST sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-SAPEN sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-STPEN sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FPROD sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-SVTTY sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FDIST sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FSUBST sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FPREC sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FDREC sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FSREC sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FPDEM sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FDDEM sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-FSDEM sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-TARST sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-TARDS sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-TRPEN sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-MAXDS sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-STCOS sy-vline 
WA_/SAPAPO/SNPOPLPR_STR-PRCOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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