ABAP Select data from SAP table ALSHTRCUV2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ALSHTRCUV2 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 ALSHTRCUV2. 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 ALSHTRCUV2 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_ALSHTRCUV2 TYPE STANDARD TABLE OF ALSHTRCUV2,
      WA_ALSHTRCUV2 TYPE ALSHTRCUV2,
      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: <ALSHTRCUV2> TYPE ALSHTRCUV2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ALSHTRCUV2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ALSHTRCUV2
  INTO TABLE IT_ALSHTRCUV2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALSHTRCUV2
*  INTO TABLE @DATA(IT_ALSHTRCUV22).
*--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_ALSHTRCUV2 INDEX 1 INTO DATA(WA_ALSHTRCUV22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ALSHTRCUV2 ASSIGNING <ALSHTRCUV2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALSHTRCUV2>-GENERAL = 1.
<ALSHTRCUV2>-SNGMSG = 1.
<ALSHTRCUV2>-PERFCURR = 1.
<ALSHTRCUV2>-PERF30MIN = 1.
<ALSHTRCUV2>-PERF24H = 1.

ENDLOOP.

LOOP AT IT_ALSHTRCUV2 INTO WA_ALSHTRCUV2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALSHTRCUV2-SHALSOURCE, sy-vline,
  WA_ALSHTRCUV2-SHALERTS, sy-vline,
  WA_ALSHTRCUV2-SHALALWAYS, sy-vline,
  WA_ALSHTRCUV2-SHALATATTR, sy-vline,
  WA_ALSHTRCUV2-SHLASTVAL, sy-vline,
  WA_ALSHTRCUV2-MONISET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALSHTRCUV2 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_ALSHTRCUV2 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_ALSHTRCUV2 INTO WA_ALSHTRCUV2.


*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_ALSHTRCUV2_STR, 
GENERAL TYPE STRING,
SNGMSG TYPE STRING,
PERFCURR TYPE STRING,
PERF30MIN TYPE STRING,
PERF24H TYPE STRING,
SHALSOURCE TYPE STRING,
SHALERTS TYPE STRING,
SHALALWAYS TYPE STRING,
SHALATATTR TYPE STRING,
SHLASTVAL TYPE STRING,
MONISET TYPE STRING,
REFRESHTIM TYPE STRING,
TIMDIFFWRN TYPE STRING,
SHMESCOUNT TYPE STRING,
MBUSRONLY TYPE STRING,
MBYUSRAADM TYPE STRING,
MBYOTHERS TYPE STRING,
OWNER TYPE STRING,
CHGDATE TYPE STRING,
CHTIME TYPE STRING,
CHTZONE TYPE STRING,
SHOWTZONE TYPE STRING,
PUBLICSET TYPE STRING,
CUSTOMIZ TYPE STRING,
MSGCONT TYPE STRING,
SHERRN_YES TYPE STRING,
SHERRN_NO TYPE STRING,
CREABYADM TYPE STRING,
RFEXTRONLY TYPE STRING,
MSCDFLINTV TYPE STRING,
FUTUREUSE7 TYPE STRING,
FUTUREUSE8 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALSHTRCUV2_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_ALSHTRCUV2_STR-GENERAL sy-vline 
WA_ALSHTRCUV2_STR-SNGMSG sy-vline 
WA_ALSHTRCUV2_STR-PERFCURR sy-vline 
WA_ALSHTRCUV2_STR-PERF30MIN sy-vline 
WA_ALSHTRCUV2_STR-PERF24H sy-vline 
WA_ALSHTRCUV2_STR-SHALSOURCE sy-vline 
WA_ALSHTRCUV2_STR-SHALERTS sy-vline 
WA_ALSHTRCUV2_STR-SHALALWAYS sy-vline 
WA_ALSHTRCUV2_STR-SHALATATTR sy-vline 
WA_ALSHTRCUV2_STR-SHLASTVAL sy-vline 
WA_ALSHTRCUV2_STR-MONISET sy-vline 
WA_ALSHTRCUV2_STR-REFRESHTIM sy-vline 
WA_ALSHTRCUV2_STR-TIMDIFFWRN sy-vline 
WA_ALSHTRCUV2_STR-SHMESCOUNT sy-vline 
WA_ALSHTRCUV2_STR-MBUSRONLY sy-vline 
WA_ALSHTRCUV2_STR-MBYUSRAADM sy-vline 
WA_ALSHTRCUV2_STR-MBYOTHERS sy-vline 
WA_ALSHTRCUV2_STR-OWNER sy-vline 
WA_ALSHTRCUV2_STR-CHGDATE sy-vline 
WA_ALSHTRCUV2_STR-CHTIME sy-vline 
WA_ALSHTRCUV2_STR-CHTZONE sy-vline 
WA_ALSHTRCUV2_STR-SHOWTZONE sy-vline 
WA_ALSHTRCUV2_STR-PUBLICSET sy-vline 
WA_ALSHTRCUV2_STR-CUSTOMIZ sy-vline 
WA_ALSHTRCUV2_STR-MSGCONT sy-vline 
WA_ALSHTRCUV2_STR-SHERRN_YES sy-vline 
WA_ALSHTRCUV2_STR-SHERRN_NO sy-vline 
WA_ALSHTRCUV2_STR-CREABYADM sy-vline 
WA_ALSHTRCUV2_STR-RFEXTRONLY sy-vline 
WA_ALSHTRCUV2_STR-MSCDFLINTV sy-vline 
WA_ALSHTRCUV2_STR-FUTUREUSE7 sy-vline 
WA_ALSHTRCUV2_STR-FUTUREUSE8 sy-vline      INTO ld_text SEPARATED BY SPACE.

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