ABAP Select data from SAP table SWW_HIST_H into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SWW_HIST_H
*  INTO TABLE @DATA(IT_SWW_HIST_H2).
*--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_SWW_HIST_H INDEX 1 INTO DATA(WA_SWW_HIST_H2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SWW_HIST_H>-MARK = 1.
<SWW_HIST_H>-EXPANDER = 1.
<SWW_HIST_H>-CLIENT = 1.
<SWW_HIST_H>-WI_ID = 1.
<SWW_HIST_H>-METHOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SWW_HIST_H-METH_EDATE, sy-vline,
  WA_SWW_HIST_H-METH_ETIME, sy-vline,
  WA_SWW_HIST_H-LOG_COUNT, sy-vline,
  WA_SWW_HIST_H-METH_USER, sy-vline,
  WA_SWW_HIST_H-CODE, sy-vline,
  WA_SWW_HIST_H-ERRORTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SWW_HIST_H 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_SWW_HIST_H 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_SWW_HIST_H INTO WA_SWW_HIST_H.


*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_SWW_HIST_H_STR, 
MARK TYPE STRING,
EXPANDER TYPE STRING,
CLIENT TYPE STRING,
WI_ID TYPE STRING,
METHOD TYPE STRING,
METH_EDATE TYPE STRING,
METH_ETIME TYPE STRING,
LOG_COUNT TYPE STRING,
METH_USER TYPE STRING,
CODE TYPE STRING,
ERRORTYPE TYPE STRING,
WORKAREA TYPE STRING,
MESSAGE TYPE STRING,
VARIABLE1 TYPE STRING,
VARIABLE2 TYPE STRING,
VARIABLE3 TYPE STRING,
VARIABLE4 TYPE STRING,
MSGTYPE TYPE STRING,
PARA_NAM_1 TYPE STRING,
PARA_VAL_1 TYPE STRING,
PARA_NAM_2 TYPE STRING,
PARA_VAL_2 TYPE STRING,
TIMESTAMP TYPE STRING,
SECT1 TYPE STRING,
SECT2 TYPE STRING,
SECT3 TYPE STRING,
SECT4 TYPE STRING,
SECT5 TYPE STRING,
CHI_LOGKEY TYPE STRING,
PAR_LOGKEY TYPE STRING,
TECH_USER TYPE STRING,
_DATAAGING TYPE STRING,
REFERENCE_NODEID TYPE STRING,
IS_BUSINESS_EXCEPTION TYPE STRING,
RESOLVED TYPE STRING,
ICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SWW_HIST_H_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_SWW_HIST_H_STR-MARK sy-vline 
WA_SWW_HIST_H_STR-EXPANDER sy-vline 
WA_SWW_HIST_H_STR-CLIENT sy-vline 
WA_SWW_HIST_H_STR-WI_ID sy-vline 
WA_SWW_HIST_H_STR-METHOD sy-vline 
WA_SWW_HIST_H_STR-METH_EDATE sy-vline 
WA_SWW_HIST_H_STR-METH_ETIME sy-vline 
WA_SWW_HIST_H_STR-LOG_COUNT sy-vline 
WA_SWW_HIST_H_STR-METH_USER sy-vline 
WA_SWW_HIST_H_STR-CODE sy-vline 
WA_SWW_HIST_H_STR-ERRORTYPE sy-vline 
WA_SWW_HIST_H_STR-WORKAREA sy-vline 
WA_SWW_HIST_H_STR-MESSAGE sy-vline 
WA_SWW_HIST_H_STR-VARIABLE1 sy-vline 
WA_SWW_HIST_H_STR-VARIABLE2 sy-vline 
WA_SWW_HIST_H_STR-VARIABLE3 sy-vline 
WA_SWW_HIST_H_STR-VARIABLE4 sy-vline 
WA_SWW_HIST_H_STR-MSGTYPE sy-vline 
WA_SWW_HIST_H_STR-PARA_NAM_1 sy-vline 
WA_SWW_HIST_H_STR-PARA_VAL_1 sy-vline 
WA_SWW_HIST_H_STR-PARA_NAM_2 sy-vline 
WA_SWW_HIST_H_STR-PARA_VAL_2 sy-vline 
WA_SWW_HIST_H_STR-TIMESTAMP sy-vline 
WA_SWW_HIST_H_STR-SECT1 sy-vline 
WA_SWW_HIST_H_STR-SECT2 sy-vline 
WA_SWW_HIST_H_STR-SECT3 sy-vline 
WA_SWW_HIST_H_STR-SECT4 sy-vline 
WA_SWW_HIST_H_STR-SECT5 sy-vline 
WA_SWW_HIST_H_STR-CHI_LOGKEY sy-vline 
WA_SWW_HIST_H_STR-PAR_LOGKEY sy-vline 
WA_SWW_HIST_H_STR-TECH_USER sy-vline 
WA_SWW_HIST_H_STR-_DATAAGING sy-vline 
WA_SWW_HIST_H_STR-REFERENCE_NODEID sy-vline 
WA_SWW_HIST_H_STR-IS_BUSINESS_EXCEPTION sy-vline 
WA_SWW_HIST_H_STR-RESOLVED sy-vline 
WA_SWW_HIST_H_STR-ICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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