ABAP Select data from SAP table P1764_EXP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P1764_EXP 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 P1764_EXP. 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 P1764_EXP 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_P1764_EXP TYPE STANDARD TABLE OF P1764_EXP,
      WA_P1764_EXP TYPE P1764_EXP,
      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: <P1764_EXP> TYPE P1764_EXP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P1764_EXP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P1764_EXP
  INTO TABLE IT_P1764_EXP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P1764_EXP
*  INTO TABLE @DATA(IT_P1764_EXP2).
*--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_P1764_EXP INDEX 1 INTO DATA(WA_P1764_EXP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P1764_EXP ASSIGNING <P1764_EXP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P1764_EXP>-MANDT = 1.
<P1764_EXP>-PLVAR = 1.
<P1764_EXP>-OTYPE = 1.
<P1764_EXP>-OBJID = 1.
<P1764_EXP>-INFTY = 1.

ENDLOOP.

LOOP AT IT_P1764_EXP INTO WA_P1764_EXP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P1764_EXP-SUBTY, sy-vline,
  WA_P1764_EXP-ISTAT, sy-vline,
  WA_P1764_EXP-PRIOX, sy-vline,
  WA_P1764_EXP-BEGDA, sy-vline,
  WA_P1764_EXP-ENDDA, sy-vline,
  WA_P1764_EXP-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P1764_EXP 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_P1764_EXP 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_P1764_EXP INTO WA_P1764_EXP.


*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 CUNIT, internal->external for field CP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_P1764_EXP-CP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P1764_EXP-CP_UNIT.
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_P1764_EXP_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,
SELSCEN TYPE STRING,
SELMETH TYPE STRING,
SELVARI TYPE STRING,
TABNR TYPE STRING,
TABSEQNR TYPE STRING,
PT_PLVAR TYPE STRING,
PT_OTYPE TYPE STRING,
PT_OBJID TYPE STRING,
GUIDT TYPE STRING,
GUIDS TYPE STRING,
PERYR TYPE STRING,
PERYT TYPE STRING,
PERID TYPE STRING,
PERIT TYPE STRING,
PT_BEGDA TYPE STRING,
PT_ENDDA TYPE STRING,
CP_ATTEMP TYPE STRING,
CP_UNIT TYPE STRING,
SMRATING TYPE STRING,
SCALEID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P1764_EXP_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_P1764_EXP_STR-MANDT sy-vline 
WA_P1764_EXP_STR-PLVAR sy-vline 
WA_P1764_EXP_STR-OTYPE sy-vline 
WA_P1764_EXP_STR-OBJID sy-vline 
WA_P1764_EXP_STR-INFTY sy-vline 
WA_P1764_EXP_STR-SUBTY sy-vline 
WA_P1764_EXP_STR-ISTAT sy-vline 
WA_P1764_EXP_STR-PRIOX sy-vline 
WA_P1764_EXP_STR-BEGDA sy-vline 
WA_P1764_EXP_STR-ENDDA sy-vline 
WA_P1764_EXP_STR-VARYF sy-vline 
WA_P1764_EXP_STR-SEQNR sy-vline 
WA_P1764_EXP_STR-AEDTM sy-vline 
WA_P1764_EXP_STR-UNAME sy-vline 
WA_P1764_EXP_STR-REASN sy-vline 
WA_P1764_EXP_STR-HISTO sy-vline 
WA_P1764_EXP_STR-ITXNR sy-vline 
WA_P1764_EXP_STR-SELSCEN sy-vline 
WA_P1764_EXP_STR-SELMETH sy-vline 
WA_P1764_EXP_STR-SELVARI sy-vline 
WA_P1764_EXP_STR-TABNR sy-vline 
WA_P1764_EXP_STR-TABSEQNR sy-vline 
WA_P1764_EXP_STR-PT_PLVAR sy-vline 
WA_P1764_EXP_STR-PT_OTYPE sy-vline 
WA_P1764_EXP_STR-PT_OBJID sy-vline 
WA_P1764_EXP_STR-GUIDT sy-vline 
WA_P1764_EXP_STR-GUIDS sy-vline 
WA_P1764_EXP_STR-PERYR sy-vline 
WA_P1764_EXP_STR-PERYT sy-vline 
WA_P1764_EXP_STR-PERID sy-vline 
WA_P1764_EXP_STR-PERIT sy-vline 
WA_P1764_EXP_STR-PT_BEGDA sy-vline 
WA_P1764_EXP_STR-PT_ENDDA sy-vline 
WA_P1764_EXP_STR-CP_ATTEMP sy-vline 
WA_P1764_EXP_STR-CP_UNIT sy-vline 
WA_P1764_EXP_STR-SMRATING sy-vline 
WA_P1764_EXP_STR-SCALEID sy-vline      INTO ld_text SEPARATED BY SPACE.

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