ABAP Select data from SAP table PZA_EEA4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PZA_EEA4 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 PZA_EEA4. 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 PZA_EEA4 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_PZA_EEA4 TYPE STANDARD TABLE OF PZA_EEA4,
      WA_PZA_EEA4 TYPE PZA_EEA4,
      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: <PZA_EEA4> TYPE PZA_EEA4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PZA_EEA4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PZA_EEA4
  INTO TABLE IT_PZA_EEA4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PZA_EEA4
*  INTO TABLE @DATA(IT_PZA_EEA42).
*--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_PZA_EEA4 INDEX 1 INTO DATA(WA_PZA_EEA42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PZA_EEA4 ASSIGNING <PZA_EEA4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PZA_EEA4>-LTYPE = 1.
<PZA_EEA4>-DESCR = 1.
<PZA_EEA4>-NUMMA = 1.
<PZA_EEA4>-NUMMC = 1.
<PZA_EEA4>-NUMMI = 1.

ENDLOOP.

LOOP AT IT_PZA_EEA4 INTO WA_PZA_EEA4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PZA_EEA4-NUMMW, sy-vline,
  WA_PZA_EEA4-NUMFA, sy-vline,
  WA_PZA_EEA4-NUMFC, sy-vline,
  WA_PZA_EEA4-NUMFI, sy-vline,
  WA_PZA_EEA4-NUMFW, sy-vline,
  WA_PZA_EEA4-NUMTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PZA_EEA4 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_PZA_EEA4 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_PZA_EEA4 INTO WA_PZA_EEA4.


*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_PZA_EEA4_STR, 
LTYPE TYPE STRING,
DESCR TYPE STRING,
NUMMA TYPE STRING,
NUMMC TYPE STRING,
NUMMI TYPE STRING,
NUMMW TYPE STRING,
NUMFA TYPE STRING,
NUMFC TYPE STRING,
NUMFI TYPE STRING,
NUMFW TYPE STRING,
NUMTO TYPE STRING,
REMMA TYPE STRING,
REMMC TYPE STRING,
REMMI TYPE STRING,
REMMW TYPE STRING,
REMFA TYPE STRING,
REMFC TYPE STRING,
REMFI TYPE STRING,
REMFW TYPE STRING,
REMTO TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PZA_EEA4_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_PZA_EEA4_STR-LTYPE sy-vline 
WA_PZA_EEA4_STR-DESCR sy-vline 
WA_PZA_EEA4_STR-NUMMA sy-vline 
WA_PZA_EEA4_STR-NUMMC sy-vline 
WA_PZA_EEA4_STR-NUMMI sy-vline 
WA_PZA_EEA4_STR-NUMMW sy-vline 
WA_PZA_EEA4_STR-NUMFA sy-vline 
WA_PZA_EEA4_STR-NUMFC sy-vline 
WA_PZA_EEA4_STR-NUMFI sy-vline 
WA_PZA_EEA4_STR-NUMFW sy-vline 
WA_PZA_EEA4_STR-NUMTO sy-vline 
WA_PZA_EEA4_STR-REMMA sy-vline 
WA_PZA_EEA4_STR-REMMC sy-vline 
WA_PZA_EEA4_STR-REMMI sy-vline 
WA_PZA_EEA4_STR-REMMW sy-vline 
WA_PZA_EEA4_STR-REMFA sy-vline 
WA_PZA_EEA4_STR-REMFC sy-vline 
WA_PZA_EEA4_STR-REMFI sy-vline 
WA_PZA_EEA4_STR-REMFW sy-vline 
WA_PZA_EEA4_STR-REMTO sy-vline 
WA_PZA_EEA4_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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