ABAP Select data from SAP table TABHIST into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TABHIST 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 TABHIST. 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 TABHIST 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_TABHIST TYPE STANDARD TABLE OF TABHIST,
      WA_TABHIST TYPE TABHIST,
      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: <TABHIST> TYPE TABHIST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TABHIST
*  INTO TABLE @DATA(IT_TABHIST2).
*--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_TABHIST INDEX 1 INTO DATA(WA_TABHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TABHIST>-NDIR = 1.
<TABHIST>-NSEQ = 1.
<TABHIST>-NINS = 1.
<TABHIST>-NUPD = 1.
<TABHIST>-NDEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TABHIST-TOTACNT, sy-vline,
  WA_TABHIST-DIRACNT, sy-vline,
  WA_TABHIST-SEQACNT, sy-vline,
  WA_TABHIST-INSACNT, sy-vline,
  WA_TABHIST-UPDACNT, sy-vline,
  WA_TABHIST-DELACNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TABHIST 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_TABHIST 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_TABHIST INTO WA_TABHIST.


*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_TABHIST_STR, 
NDIR TYPE STRING,
NSEQ TYPE STRING,
NINS TYPE STRING,
NUPD TYPE STRING,
NDEL TYPE STRING,
TOTACNT TYPE STRING,
DIRACNT TYPE STRING,
SEQACNT TYPE STRING,
INSACNT TYPE STRING,
UPDACNT TYPE STRING,
DELACNT TYPE STRING,
TOTFAIL TYPE STRING,
DIRFAIL TYPE STRING,
INSFAIL TYPE STRING,
UPDFAIL TYPE STRING,
DELFAIL TYPE STRING,
TOTCALL TYPE STRING,
DIRCALL TYPE STRING,
SEQCALL TYPE STRING,
INSCALL TYPE STRING,
UPDCALL TYPE STRING,
DELCALL TYPE STRING,
RESHITS TYPE STRING,
PARHITS TYPE STRING,
TOTROWS TYPE STRING,
DIRROWS TYPE STRING,
SEQROWS TYPE STRING,
INSROWS TYPE STRING,
UPDROWS TYPE STRING,
DELROWS TYPE STRING,
TOTTIME TYPE STRING,
DIRTIME TYPE STRING,
SEQTIME TYPE STRING,
INSTIME TYPE STRING,
UPDTIME TYPE STRING,
DELTIME TYPE STRING,
TOTRATE TYPE STRING,
DIRRATE TYPE STRING,
SEQRATE TYPE STRING,
INSRATE TYPE STRING,
UPDRATE TYPE STRING,
DELRATE TYPE STRING,
NREQBUF TYPE STRING,
NREQBUP TYPE STRING,
NDBABUF TYPE STRING,
NDBABUP TYPE STRING,
NDB_BUF TYPE STRING,
NDB_BUP TYPE STRING,
NSQLTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TABHIST_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_TABHIST_STR-NDIR sy-vline 
WA_TABHIST_STR-NSEQ sy-vline 
WA_TABHIST_STR-NINS sy-vline 
WA_TABHIST_STR-NUPD sy-vline 
WA_TABHIST_STR-NDEL sy-vline 
WA_TABHIST_STR-TOTACNT sy-vline 
WA_TABHIST_STR-DIRACNT sy-vline 
WA_TABHIST_STR-SEQACNT sy-vline 
WA_TABHIST_STR-INSACNT sy-vline 
WA_TABHIST_STR-UPDACNT sy-vline 
WA_TABHIST_STR-DELACNT sy-vline 
WA_TABHIST_STR-TOTFAIL sy-vline 
WA_TABHIST_STR-DIRFAIL sy-vline 
WA_TABHIST_STR-INSFAIL sy-vline 
WA_TABHIST_STR-UPDFAIL sy-vline 
WA_TABHIST_STR-DELFAIL sy-vline 
WA_TABHIST_STR-TOTCALL sy-vline 
WA_TABHIST_STR-DIRCALL sy-vline 
WA_TABHIST_STR-SEQCALL sy-vline 
WA_TABHIST_STR-INSCALL sy-vline 
WA_TABHIST_STR-UPDCALL sy-vline 
WA_TABHIST_STR-DELCALL sy-vline 
WA_TABHIST_STR-RESHITS sy-vline 
WA_TABHIST_STR-PARHITS sy-vline 
WA_TABHIST_STR-TOTROWS sy-vline 
WA_TABHIST_STR-DIRROWS sy-vline 
WA_TABHIST_STR-SEQROWS sy-vline 
WA_TABHIST_STR-INSROWS sy-vline 
WA_TABHIST_STR-UPDROWS sy-vline 
WA_TABHIST_STR-DELROWS sy-vline 
WA_TABHIST_STR-TOTTIME sy-vline 
WA_TABHIST_STR-DIRTIME sy-vline 
WA_TABHIST_STR-SEQTIME sy-vline 
WA_TABHIST_STR-INSTIME sy-vline 
WA_TABHIST_STR-UPDTIME sy-vline 
WA_TABHIST_STR-DELTIME sy-vline 
WA_TABHIST_STR-TOTRATE sy-vline 
WA_TABHIST_STR-DIRRATE sy-vline 
WA_TABHIST_STR-SEQRATE sy-vline 
WA_TABHIST_STR-INSRATE sy-vline 
WA_TABHIST_STR-UPDRATE sy-vline 
WA_TABHIST_STR-DELRATE sy-vline 
WA_TABHIST_STR-NREQBUF sy-vline 
WA_TABHIST_STR-NREQBUP sy-vline 
WA_TABHIST_STR-NDBABUF sy-vline 
WA_TABHIST_STR-NDBABUP sy-vline 
WA_TABHIST_STR-NDB_BUF sy-vline 
WA_TABHIST_STR-NDB_BUP sy-vline 
WA_TABHIST_STR-NSQLTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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