ABAP Select data from SAP table P2TH_TAX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2TH_TAX 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 P2TH_TAX. 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 P2TH_TAX 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_P2TH_TAX TYPE STANDARD TABLE OF P2TH_TAX,
      WA_P2TH_TAX TYPE P2TH_TAX,
      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: <P2TH_TAX> TYPE P2TH_TAX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2TH_TAX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2TH_TAX
  INTO TABLE IT_P2TH_TAX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2TH_TAX
*  INTO TABLE @DATA(IT_P2TH_TAX2).
*--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_P2TH_TAX INDEX 1 INTO DATA(WA_P2TH_TAX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2TH_TAX ASSIGNING <P2TH_TAX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2TH_TAX>-MANDT = 1.
<P2TH_TAX>-DCT_PERNR = 1.
<P2TH_TAX>-DCT_SEQNR = 1.
<P2TH_TAX>-DCT_ROWID = 1.
<P2TH_TAX>-CNTR2 = 1.

ENDLOOP.

LOOP AT IT_P2TH_TAX INTO WA_P2TH_TAX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2TH_TAX-BEGDA, sy-vline,
  WA_P2TH_TAX-ENDDA, sy-vline,
  WA_P2TH_TAX-TAXID, sy-vline,
  WA_P2TH_TAX-SPALL, sy-vline,
  WA_P2TH_TAX-CHNO1, sy-vline,
  WA_P2TH_TAX-CHNO2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2TH_TAX 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_P2TH_TAX 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_P2TH_TAX INTO WA_P2TH_TAX.


*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_P2TH_TAX_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
CNTR2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TAXID TYPE STRING,
SPALL TYPE STRING,
CHNO1 TYPE STRING,
CHNO2 TYPE STRING,
CHNO3 TYPE STRING,
LPREM TYPE STRING,
LPCUR TYPE STRING,
MGINT TYPE STRING,
MGCUR TYPE STRING,
CHAMT TYPE STRING,
CHCUR TYPE STRING,
SPINS TYPE STRING,
SPCUR TYPE STRING,
MFINV TYPE STRING,
MFCUR TYPE STRING,
HAHIR TYPE STRING,
HHCUR TYPE STRING,
HACFL TYPE STRING,
HACSH TYPE STRING,
HCCUR TYPE STRING,
PENSN TYPE STRING,
PNCUR TYPE STRING,
LTEQF TYPE STRING,
LTCUR TYPE STRING,
CHEDU TYPE STRING,
CECUR TYPE STRING,
FCNTR TYPE STRING,
FCCUR TYPE STRING,
MCNTR TYPE STRING,
MCCUR TYPE STRING,
SFCTR TYPE STRING,
SFCUR TYPE STRING,
SMCTR TYPE STRING,
SMCUR TYPE STRING,
SPRCTR TYPE STRING,
SPRCUR TYPE STRING,
FPRINS TYPE STRING,
FPRCUR TYPE STRING,
MPRINS TYPE STRING,
MPRCUR TYPE STRING,
SFPINS TYPE STRING,
SFPCUR TYPE STRING,
SMPINS TYPE STRING,
SMPCUR TYPE STRING,
IMMEXP TYPE STRING,
IMMCUR TYPE STRING,
DIALL TYPE STRING,
DINO1 TYPE STRING,
TUREXM TYPE STRING,
TURCUR TYPE STRING,
LPNSN TYPE STRING,
LNCUR TYPE STRING,
DISCH TYPE STRING,
EETAX TYPE STRING,
IMDAT TYPE STRING,
HIEXP TYPE STRING,
HICUR TYPE STRING,
CHNO4 TYPE STRING,
SUSAF TYPE STRING,
SSCUR TYPE STRING,
SSFEX TYPE STRING,
SXCUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2TH_TAX_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_P2TH_TAX_STR-MANDT sy-vline 
WA_P2TH_TAX_STR-DCT_PERNR sy-vline 
WA_P2TH_TAX_STR-DCT_SEQNR sy-vline 
WA_P2TH_TAX_STR-DCT_ROWID sy-vline 
WA_P2TH_TAX_STR-CNTR2 sy-vline 
WA_P2TH_TAX_STR-BEGDA sy-vline 
WA_P2TH_TAX_STR-ENDDA sy-vline 
WA_P2TH_TAX_STR-TAXID sy-vline 
WA_P2TH_TAX_STR-SPALL sy-vline 
WA_P2TH_TAX_STR-CHNO1 sy-vline 
WA_P2TH_TAX_STR-CHNO2 sy-vline 
WA_P2TH_TAX_STR-CHNO3 sy-vline 
WA_P2TH_TAX_STR-LPREM sy-vline 
WA_P2TH_TAX_STR-LPCUR sy-vline 
WA_P2TH_TAX_STR-MGINT sy-vline 
WA_P2TH_TAX_STR-MGCUR sy-vline 
WA_P2TH_TAX_STR-CHAMT sy-vline 
WA_P2TH_TAX_STR-CHCUR sy-vline 
WA_P2TH_TAX_STR-SPINS sy-vline 
WA_P2TH_TAX_STR-SPCUR sy-vline 
WA_P2TH_TAX_STR-MFINV sy-vline 
WA_P2TH_TAX_STR-MFCUR sy-vline 
WA_P2TH_TAX_STR-HAHIR sy-vline 
WA_P2TH_TAX_STR-HHCUR sy-vline 
WA_P2TH_TAX_STR-HACFL sy-vline 
WA_P2TH_TAX_STR-HACSH sy-vline 
WA_P2TH_TAX_STR-HCCUR sy-vline 
WA_P2TH_TAX_STR-PENSN sy-vline 
WA_P2TH_TAX_STR-PNCUR sy-vline 
WA_P2TH_TAX_STR-LTEQF sy-vline 
WA_P2TH_TAX_STR-LTCUR sy-vline 
WA_P2TH_TAX_STR-CHEDU sy-vline 
WA_P2TH_TAX_STR-CECUR sy-vline 
WA_P2TH_TAX_STR-FCNTR sy-vline 
WA_P2TH_TAX_STR-FCCUR sy-vline 
WA_P2TH_TAX_STR-MCNTR sy-vline 
WA_P2TH_TAX_STR-MCCUR sy-vline 
WA_P2TH_TAX_STR-SFCTR sy-vline 
WA_P2TH_TAX_STR-SFCUR sy-vline 
WA_P2TH_TAX_STR-SMCTR sy-vline 
WA_P2TH_TAX_STR-SMCUR sy-vline 
WA_P2TH_TAX_STR-SPRCTR sy-vline 
WA_P2TH_TAX_STR-SPRCUR sy-vline 
WA_P2TH_TAX_STR-FPRINS sy-vline 
WA_P2TH_TAX_STR-FPRCUR sy-vline 
WA_P2TH_TAX_STR-MPRINS sy-vline 
WA_P2TH_TAX_STR-MPRCUR sy-vline 
WA_P2TH_TAX_STR-SFPINS sy-vline 
WA_P2TH_TAX_STR-SFPCUR sy-vline 
WA_P2TH_TAX_STR-SMPINS sy-vline 
WA_P2TH_TAX_STR-SMPCUR sy-vline 
WA_P2TH_TAX_STR-IMMEXP sy-vline 
WA_P2TH_TAX_STR-IMMCUR sy-vline 
WA_P2TH_TAX_STR-DIALL sy-vline 
WA_P2TH_TAX_STR-DINO1 sy-vline 
WA_P2TH_TAX_STR-TUREXM sy-vline 
WA_P2TH_TAX_STR-TURCUR sy-vline 
WA_P2TH_TAX_STR-LPNSN sy-vline 
WA_P2TH_TAX_STR-LNCUR sy-vline 
WA_P2TH_TAX_STR-DISCH sy-vline 
WA_P2TH_TAX_STR-EETAX sy-vline 
WA_P2TH_TAX_STR-IMDAT sy-vline 
WA_P2TH_TAX_STR-HIEXP sy-vline 
WA_P2TH_TAX_STR-HICUR sy-vline 
WA_P2TH_TAX_STR-CHNO4 sy-vline 
WA_P2TH_TAX_STR-SUSAF sy-vline 
WA_P2TH_TAX_STR-SSCUR sy-vline 
WA_P2TH_TAX_STR-SSFEX sy-vline 
WA_P2TH_TAX_STR-SXCUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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