ABAP Select data from SAP table E3WPG02 into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3WPG02 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 E3WPG02. 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 E3WPG02 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_E3WPG02 TYPE STANDARD TABLE OF E3WPG02,
      WA_E3WPG02 TYPE E3WPG02,
      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: <E3WPG02> TYPE E3WPG02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3WPG02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3WPG02
  INTO TABLE IT_E3WPG02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3WPG02
*  INTO TABLE @DATA(IT_E3WPG022).
*--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_E3WPG02 INDEX 1 INTO DATA(WA_E3WPG022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3WPG02 ASSIGNING <E3WPG02>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3WPG02>-QUALVORG = 1.
<E3WPG02>-REFERENZNR = 1.
<E3WPG02>-LITEM = 1.
<E3WPG02>-QUALARTNR = 1.
<E3WPG02>-ARTNR = 1.
ENDLOOP.

LOOP AT IT_E3WPG02 INTO WA_E3WPG02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3WPG02-BEWART, sy-vline,
WA_E3WPG02-MEINH, sy-vline,
WA_E3WPG02-MENGE, sy-vline,
WA_E3WPG02-LIEFMENGE, sy-vline,
WA_E3WPG02-WAERS, sy-vline,
WA_E3WPG02-WERT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_E3WPG02 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_E3WPG02 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_E3WPG02 INTO WA_E3WPG02. *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 ALPHA, internal->external for field LIFNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_E3WPG02-LIFNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_E3WPG02-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_E3WPG02-SAKNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_E3WPG02-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_E3WPG02-KOSTL IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_E3WPG02-KOSTL.
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_E3WPG02_STR,
QUALVORG TYPE STRING,
REFERENZNR TYPE STRING,
LITEM TYPE STRING,
QUALARTNR TYPE STRING,
ARTNR TYPE STRING,
BEWART TYPE STRING,
MEINH TYPE STRING,
MENGE TYPE STRING,
LIEFMENGE TYPE STRING,
WAERS TYPE STRING,
WERT TYPE STRING,
EXBWR TYPE STRING,
ZFILIALE TYPE STRING,
KUNDNR TYPE STRING,
VERKAEUFER TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
LIFNR TYPE STRING,
SAKNR TYPE STRING,
KOSTL TYPE STRING,
SOBKZ TYPE STRING,
ELIKZ TYPE STRING,
KZBEW TYPE STRING,
GRUND TYPE STRING,
VFDAT TYPE STRING,
CHECK TYPE STRING,END OF T_EKKO_STR. DATA: WA_E3WPG02_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_E3WPG02_STR-QUALVORG sy-vline
WA_E3WPG02_STR-REFERENZNR sy-vline
WA_E3WPG02_STR-LITEM sy-vline
WA_E3WPG02_STR-QUALARTNR sy-vline
WA_E3WPG02_STR-ARTNR sy-vline
WA_E3WPG02_STR-BEWART sy-vline
WA_E3WPG02_STR-MEINH sy-vline
WA_E3WPG02_STR-MENGE sy-vline
WA_E3WPG02_STR-LIEFMENGE sy-vline
WA_E3WPG02_STR-WAERS sy-vline
WA_E3WPG02_STR-WERT sy-vline
WA_E3WPG02_STR-EXBWR sy-vline
WA_E3WPG02_STR-ZFILIALE sy-vline
WA_E3WPG02_STR-KUNDNR sy-vline
WA_E3WPG02_STR-VERKAEUFER sy-vline
WA_E3WPG02_STR-LGORT sy-vline
WA_E3WPG02_STR-CHARG sy-vline
WA_E3WPG02_STR-LIFNR sy-vline
WA_E3WPG02_STR-SAKNR sy-vline
WA_E3WPG02_STR-KOSTL sy-vline
WA_E3WPG02_STR-SOBKZ sy-vline
WA_E3WPG02_STR-ELIKZ sy-vline
WA_E3WPG02_STR-KZBEW sy-vline
WA_E3WPG02_STR-GRUND sy-vline
WA_E3WPG02_STR-VFDAT sy-vline
WA_E3WPG02_STR-CHECK sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.