ABAP Select data from SAP table T7NZPD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7NZPD 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 T7NZPD. 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 T7NZPD 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_T7NZPD TYPE STANDARD TABLE OF T7NZPD,
      WA_T7NZPD TYPE T7NZPD,
      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: <T7NZPD> TYPE T7NZPD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7NZPD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7NZPD
  INTO TABLE IT_T7NZPD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7NZPD
*  INTO TABLE @DATA(IT_T7NZPD2).
*--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_T7NZPD INDEX 1 INTO DATA(WA_T7NZPD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7NZPD ASSIGNING <T7NZPD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7NZPD>-MANDT = 1.
<T7NZPD>-GLBID = 1.
<T7NZPD>-PERNR = 1.
<T7NZPD>-SRNO = 1.
<T7NZPD>-ABKRS = 1.

ENDLOOP.

LOOP AT IT_T7NZPD INTO WA_T7NZPD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7NZPD-PAYTY, sy-vline,
  WA_T7NZPD-PAYID, sy-vline,
  WA_T7NZPD-ENDDA, sy-vline,
  WA_T7NZPD-BEGDA, sy-vline,
  WA_T7NZPD-IRDNR, sy-vline,
  WA_T7NZPD-SOFT_PROVIDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7NZPD 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_T7NZPD 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_T7NZPD INTO WA_T7NZPD.


*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_T7NZPD_STR, 
MANDT TYPE STRING,
GLBID TYPE STRING,
PERNR TYPE STRING,
SRNO TYPE STRING,
ABKRS TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
IRDNR TYPE STRING,
SOFT_PROVIDER TYPE STRING,
SOFT_PLATFORM TYPE STRING,
SOFT_RELEASE TYPE STRING,
IDENTIFIER_VALUE_TYPE TYPE STRING,
ER_IRDNR TYPE STRING,
ACC_TYPE TYPE STRING,
PER_ENDDA TYPE STRING,
MAJ_FORM_TYP TYPE STRING,
IS_NIL_RETURN TYPE STRING,
IS_FINAL_RETURN TYPE STRING,
IS_AMENDED TYPE STRING,
AMEND_REASON TYPE STRING,
AMEND_DETAILS TYPE STRING,
SUBKEY TYPE STRING,
IS_REVERSE_REPLACE TYPE STRING,
PDATE TYPE STRING,
CNAME TYPE STRING,
EE_NAME TYPE STRING,
CPHONE TYPE STRING,
CMAIL TYPE STRING,
LINNO TYPE STRING,
REFID TYPE STRING,
TAXCD TYPE STRING,
HIRE_DATE TYPE STRING,
FIRE_DATE TYPE STRING,
FPPER TYPE STRING,
PAYPER_BEGDA TYPE STRING,
PAYPER_ENDDA TYPE STRING,
PAYFREQ TYPE STRING,
TAXABLE_GROSS TYPE STRING,
EARN_NL_FOR_ACC TYPE STRING,
LUMPSUM TYPE STRING,
PAYE TYPE STRING,
CS_CODE TYPE STRING,
CS_AMOUNT TYPE STRING,
STUDENT_LOAN TYPE STRING,
KIWI_ER_DED TYPE STRING,
KIWI_EE_DED TYPE STRING,
TXCRD TYPE STRING,
ESCT TYPE STRING,
SLCIR TYPE STRING,
SLBOR TYPE STRING,
GROSS_FOR_ESS TYPE STRING,
TAX_FOR_ESS TYPE STRING,
SL_FOR_ESS TYPE STRING,
HRSPD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7NZPD_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_T7NZPD_STR-MANDT sy-vline 
WA_T7NZPD_STR-GLBID sy-vline 
WA_T7NZPD_STR-PERNR sy-vline 
WA_T7NZPD_STR-SRNO sy-vline 
WA_T7NZPD_STR-ABKRS sy-vline 
WA_T7NZPD_STR-PAYTY sy-vline 
WA_T7NZPD_STR-PAYID sy-vline 
WA_T7NZPD_STR-ENDDA sy-vline 
WA_T7NZPD_STR-BEGDA sy-vline 
WA_T7NZPD_STR-IRDNR sy-vline 
WA_T7NZPD_STR-SOFT_PROVIDER sy-vline 
WA_T7NZPD_STR-SOFT_PLATFORM sy-vline 
WA_T7NZPD_STR-SOFT_RELEASE sy-vline 
WA_T7NZPD_STR-IDENTIFIER_VALUE_TYPE sy-vline 
WA_T7NZPD_STR-ER_IRDNR sy-vline 
WA_T7NZPD_STR-ACC_TYPE sy-vline 
WA_T7NZPD_STR-PER_ENDDA sy-vline 
WA_T7NZPD_STR-MAJ_FORM_TYP sy-vline 
WA_T7NZPD_STR-IS_NIL_RETURN sy-vline 
WA_T7NZPD_STR-IS_FINAL_RETURN sy-vline 
WA_T7NZPD_STR-IS_AMENDED sy-vline 
WA_T7NZPD_STR-AMEND_REASON sy-vline 
WA_T7NZPD_STR-AMEND_DETAILS sy-vline 
WA_T7NZPD_STR-SUBKEY sy-vline 
WA_T7NZPD_STR-IS_REVERSE_REPLACE sy-vline 
WA_T7NZPD_STR-PDATE sy-vline 
WA_T7NZPD_STR-CNAME sy-vline 
WA_T7NZPD_STR-EE_NAME sy-vline 
WA_T7NZPD_STR-CPHONE sy-vline 
WA_T7NZPD_STR-CMAIL sy-vline 
WA_T7NZPD_STR-LINNO sy-vline 
WA_T7NZPD_STR-REFID sy-vline 
WA_T7NZPD_STR-TAXCD sy-vline 
WA_T7NZPD_STR-HIRE_DATE sy-vline 
WA_T7NZPD_STR-FIRE_DATE sy-vline 
WA_T7NZPD_STR-FPPER sy-vline 
WA_T7NZPD_STR-PAYPER_BEGDA sy-vline 
WA_T7NZPD_STR-PAYPER_ENDDA sy-vline 
WA_T7NZPD_STR-PAYFREQ sy-vline 
WA_T7NZPD_STR-TAXABLE_GROSS sy-vline 
WA_T7NZPD_STR-EARN_NL_FOR_ACC sy-vline 
WA_T7NZPD_STR-LUMPSUM sy-vline 
WA_T7NZPD_STR-PAYE sy-vline 
WA_T7NZPD_STR-CS_CODE sy-vline 
WA_T7NZPD_STR-CS_AMOUNT sy-vline 
WA_T7NZPD_STR-STUDENT_LOAN sy-vline 
WA_T7NZPD_STR-KIWI_ER_DED sy-vline 
WA_T7NZPD_STR-KIWI_EE_DED sy-vline 
WA_T7NZPD_STR-TXCRD sy-vline 
WA_T7NZPD_STR-ESCT sy-vline 
WA_T7NZPD_STR-SLCIR sy-vline 
WA_T7NZPD_STR-SLBOR sy-vline 
WA_T7NZPD_STR-GROSS_FOR_ESS sy-vline 
WA_T7NZPD_STR-TAX_FOR_ESS sy-vline 
WA_T7NZPD_STR-SL_FOR_ESS sy-vline 
WA_T7NZPD_STR-HRSPD sy-vline      INTO ld_text SEPARATED BY SPACE.

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