ABAP Select data from SAP table E1P1804 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1P1804 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 E1P1804. 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 E1P1804 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_E1P1804 TYPE STANDARD TABLE OF E1P1804,
      WA_E1P1804 TYPE E1P1804,
      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: <E1P1804> TYPE E1P1804.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1P1804.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1P1804
  INTO TABLE IT_E1P1804.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1P1804
*  INTO TABLE @DATA(IT_E1P18042).
*--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_E1P1804 INDEX 1 INTO DATA(WA_E1P18042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1P1804 ASSIGNING <E1P1804>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1P1804>-MANDT = 1.
<E1P1804>-PLVAR = 1.
<E1P1804>-OTYPE = 1.
<E1P1804>-OBJID = 1.
<E1P1804>-INFTY = 1.

ENDLOOP.

LOOP AT IT_E1P1804 INTO WA_E1P1804.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1P1804-SUBTY, sy-vline,
  WA_E1P1804-ISTAT, sy-vline,
  WA_E1P1804-PRIOX, sy-vline,
  WA_E1P1804-BEGDA, sy-vline,
  WA_E1P1804-ENDDA, sy-vline,
  WA_E1P1804-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1P1804 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_E1P1804 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_E1P1804 INTO WA_E1P1804.


*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_E1P1804_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,
SIGNIFICANCE TYPE STRING,
PURPOSE TYPE STRING,
TO_BE_TESTED TYPE STRING,
IS_CONTROL TYPE STRING,
IS_REFERENCE TYPE STRING,
TESTING_TEC TYPE STRING,
FREQUENCY TYPE STRING,
AUTOMATION TYPE STRING,
MATURITY_TARGET TYPE STRING,
DATE_EVENT TYPE STRING,
NATURE TYPE STRING,
REFERENCE TYPE STRING,
TEST_AUTOMATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1P1804_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_E1P1804_STR-MANDT sy-vline 
WA_E1P1804_STR-PLVAR sy-vline 
WA_E1P1804_STR-OTYPE sy-vline 
WA_E1P1804_STR-OBJID sy-vline 
WA_E1P1804_STR-INFTY sy-vline 
WA_E1P1804_STR-SUBTY sy-vline 
WA_E1P1804_STR-ISTAT sy-vline 
WA_E1P1804_STR-PRIOX sy-vline 
WA_E1P1804_STR-BEGDA sy-vline 
WA_E1P1804_STR-ENDDA sy-vline 
WA_E1P1804_STR-VARYF sy-vline 
WA_E1P1804_STR-SEQNR sy-vline 
WA_E1P1804_STR-AEDTM sy-vline 
WA_E1P1804_STR-UNAME sy-vline 
WA_E1P1804_STR-REASN sy-vline 
WA_E1P1804_STR-HISTO sy-vline 
WA_E1P1804_STR-ITXNR sy-vline 
WA_E1P1804_STR-SIGNIFICANCE sy-vline 
WA_E1P1804_STR-PURPOSE sy-vline 
WA_E1P1804_STR-TO_BE_TESTED sy-vline 
WA_E1P1804_STR-IS_CONTROL sy-vline 
WA_E1P1804_STR-IS_REFERENCE sy-vline 
WA_E1P1804_STR-TESTING_TEC sy-vline 
WA_E1P1804_STR-FREQUENCY sy-vline 
WA_E1P1804_STR-AUTOMATION sy-vline 
WA_E1P1804_STR-MATURITY_TARGET sy-vline 
WA_E1P1804_STR-DATE_EVENT sy-vline 
WA_E1P1804_STR-NATURE sy-vline 
WA_E1P1804_STR-REFERENCE sy-vline 
WA_E1P1804_STR-TEST_AUTOMATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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