ABAP Select data from SAP table HRVEQUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRVEQUI
*  INTO TABLE @DATA(IT_HRVEQUI2).
*--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_HRVEQUI INDEX 1 INTO DATA(WA_HRVEQUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRVEQUI>-PLVAR = 1.
<HRVEQUI>-OTYPE = 1.
<HRVEQUI>-OBJID = 1.
<HRVEQUI>-ISTAT = 1.
<HRVEQUI>-SHORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRVEQUI-STEXT, sy-vline,
  WA_HRVEQUI-BEGDA, sy-vline,
  WA_HRVEQUI-ENDDA, sy-vline,
  WA_HRVEQUI-RETYP, sy-vline,
  WA_HRVEQUI-RESID, sy-vline,
  WA_HRVEQUI-RESHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRVEQUI 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_HRVEQUI 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_HRVEQUI INTO WA_HRVEQUI.


*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_HRVEQUI_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
ISTAT TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
RETYP TYPE STRING,
RESID TYPE STRING,
RESHT TYPE STRING,
RETXT TYPE STRING,
REBEG TYPE STRING,
REEND TYPE STRING,
MANZL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRVEQUI_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_HRVEQUI_STR-PLVAR sy-vline 
WA_HRVEQUI_STR-OTYPE sy-vline 
WA_HRVEQUI_STR-OBJID sy-vline 
WA_HRVEQUI_STR-ISTAT sy-vline 
WA_HRVEQUI_STR-SHORT sy-vline 
WA_HRVEQUI_STR-STEXT sy-vline 
WA_HRVEQUI_STR-BEGDA sy-vline 
WA_HRVEQUI_STR-ENDDA sy-vline 
WA_HRVEQUI_STR-RETYP sy-vline 
WA_HRVEQUI_STR-RESID sy-vline 
WA_HRVEQUI_STR-RESHT sy-vline 
WA_HRVEQUI_STR-RETXT sy-vline 
WA_HRVEQUI_STR-REBEG sy-vline 
WA_HRVEQUI_STR-REEND sy-vline 
WA_HRVEQUI_STR-MANZL sy-vline      INTO ld_text SEPARATED BY SPACE.

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