ABAP Select data from SAP table H_ETYP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM H_ETYP
*  INTO TABLE @DATA(IT_H_ETYP2).
*--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_H_ETYP INDEX 1 INTO DATA(WA_H_ETYP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<H_ETYP>-MANDT = 1.
<H_ETYP>-MATNR = 1.
<H_ETYP>-FUNKLAS = 1.
<H_ETYP>-BAUKLAS = 1.
<H_ETYP>-BAUFORM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_H_ETYP-BGLKZ, sy-vline,
  WA_H_ETYP-ZWGRUPPE, sy-vline,
  WA_H_ETYP-EAGRUPPE, sy-vline,
  WA_H_ETYP-BGLNETZ, sy-vline,
  WA_H_ETYP-WGRUPPE, sy-vline,
  WA_H_ETYP-GRPMATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_H_ETYP 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_H_ETYP 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_H_ETYP INTO WA_H_ETYP.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_H_ETYP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_ETYP-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field GRPMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_H_ETYP-GRPMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_ETYP-GRPMATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RAT11, internal->external for field RATING
CALL FUNCTION 'CONVERSION_EXIT_RAT11_OUTPUT'
  EXPORTING
    input =                      WA_H_ETYP-RATING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_ETYP-RATING.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PVOLT, internal->external for field P_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_PVOLT_OUTPUT'
  EXPORTING
    input =                      WA_H_ETYP-P_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_ETYP-P_VOLTAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SVOLT, internal->external for field S_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_SVOLT_OUTPUT'
  EXPORTING
    input =                      WA_H_ETYP-S_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_H_ETYP-S_VOLTAGE.
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_H_ETYP_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
FUNKLAS TYPE STRING,
BAUKLAS TYPE STRING,
BAUFORM TYPE STRING,
BGLKZ TYPE STRING,
ZWGRUPPE TYPE STRING,
EAGRUPPE TYPE STRING,
BGLNETZ TYPE STRING,
WGRUPPE TYPE STRING,
GRPMATNR TYPE STRING,
SPARTE TYPE STRING,
G_INFOSATZ TYPE STRING,
LOSSDTGROUP TYPE STRING,
RATING TYPE STRING,
P_VOLTAGE TYPE STRING,
S_VOLTAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_H_ETYP_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_H_ETYP_STR-MANDT sy-vline 
WA_H_ETYP_STR-MATNR sy-vline 
WA_H_ETYP_STR-FUNKLAS sy-vline 
WA_H_ETYP_STR-BAUKLAS sy-vline 
WA_H_ETYP_STR-BAUFORM sy-vline 
WA_H_ETYP_STR-BGLKZ sy-vline 
WA_H_ETYP_STR-ZWGRUPPE sy-vline 
WA_H_ETYP_STR-EAGRUPPE sy-vline 
WA_H_ETYP_STR-BGLNETZ sy-vline 
WA_H_ETYP_STR-WGRUPPE sy-vline 
WA_H_ETYP_STR-GRPMATNR sy-vline 
WA_H_ETYP_STR-SPARTE sy-vline 
WA_H_ETYP_STR-G_INFOSATZ sy-vline 
WA_H_ETYP_STR-LOSSDTGROUP sy-vline 
WA_H_ETYP_STR-RATING sy-vline 
WA_H_ETYP_STR-P_VOLTAGE sy-vline 
WA_H_ETYP_STR-S_VOLTAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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