ABAP Select data from SAP table P1201 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P1201 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 P1201. 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 P1201 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_P1201 TYPE STANDARD TABLE OF P1201,
      WA_P1201 TYPE P1201,
      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: <P1201> TYPE P1201.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P1201.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P1201
  INTO TABLE IT_P1201.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P1201
*  INTO TABLE @DATA(IT_P12012).
*--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_P1201 INDEX 1 INTO DATA(WA_P12012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P1201 ASSIGNING <P1201>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P1201>-MANDT = 1.
<P1201>-PLVAR = 1.
<P1201>-OTYPE = 1.
<P1201>-OBJID = 1.
<P1201>-INFTY = 1.

ENDLOOP.

LOOP AT IT_P1201 INTO WA_P1201.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P1201-SUBTY, sy-vline,
  WA_P1201-ISTAT, sy-vline,
  WA_P1201-PRIOX, sy-vline,
  WA_P1201-BEGDA, sy-vline,
  WA_P1201-ENDDA, sy-vline,
  WA_P1201-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P1201 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_P1201 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_P1201 INTO WA_P1201.


*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_P1201_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
SWOTP TYPE STRING,
SWMTD TYPE STRING,
CLSNAM TYPE STRING,
CLSMET TYPE STRING,
METHTYPE TYPE STRING,
BACKGROUND TYPE STRING,
CONFIRMTSK TYPE STRING,
SYNCHRON TYPE STRING,
TTYPE TYPE STRING,
GENERATED TYPE STRING,
ACTOR_FLAG TYPE STRING,
TSKRELSTAT TYPE STRING,
PHONE_ABLE TYPE STRING,
TCODE TYPE STRING,
WEB_ABLE TYPE STRING,
FORM_ABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P1201_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_P1201_STR-MANDT sy-vline 
WA_P1201_STR-PLVAR sy-vline 
WA_P1201_STR-OTYPE sy-vline 
WA_P1201_STR-OBJID sy-vline 
WA_P1201_STR-INFTY sy-vline 
WA_P1201_STR-SUBTY sy-vline 
WA_P1201_STR-ISTAT sy-vline 
WA_P1201_STR-PRIOX sy-vline 
WA_P1201_STR-BEGDA sy-vline 
WA_P1201_STR-ENDDA sy-vline 
WA_P1201_STR-VARYF sy-vline 
WA_P1201_STR-SEQNR sy-vline 
WA_P1201_STR-AEDTM sy-vline 
WA_P1201_STR-UNAME sy-vline 
WA_P1201_STR-REASN sy-vline 
WA_P1201_STR-HISTO sy-vline 
WA_P1201_STR-ITXNR sy-vline 
WA_P1201_STR-SWOTP sy-vline 
WA_P1201_STR-SWMTD sy-vline 
WA_P1201_STR-CLSNAM sy-vline 
WA_P1201_STR-CLSMET sy-vline 
WA_P1201_STR-METHTYPE sy-vline 
WA_P1201_STR-BACKGROUND sy-vline 
WA_P1201_STR-CONFIRMTSK sy-vline 
WA_P1201_STR-SYNCHRON sy-vline 
WA_P1201_STR-TTYPE sy-vline 
WA_P1201_STR-GENERATED sy-vline 
WA_P1201_STR-ACTOR_FLAG sy-vline 
WA_P1201_STR-TSKRELSTAT sy-vline 
WA_P1201_STR-PHONE_ABLE sy-vline 
WA_P1201_STR-TCODE sy-vline 
WA_P1201_STR-WEB_ABLE sy-vline 
WA_P1201_STR-FORM_ABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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