ABAP Select data from SAP table PIQIB_HOLDMAINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQIB_HOLDMAINT
*  INTO TABLE @DATA(IT_PIQIB_HOLDMAINT2).
*--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_PIQIB_HOLDMAINT INDEX 1 INTO DATA(WA_PIQIB_HOLDMAINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQIB_HOLDMAINT>-HS_PLVAR = 1.
<PIQIB_HOLDMAINT>-HS_STOTYPE = 1.
<PIQIB_HOLDMAINT>-HS_STOBJID = 1.
<PIQIB_HOLDMAINT>-HS_HOLD = 1.
<PIQIB_HOLDMAINT>-HS_HOLDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQIB_HOLDMAINT-HS_STATE, sy-vline,
  WA_PIQIB_HOLDMAINT-HS_HOLDGROUP, sy-vline,
  WA_PIQIB_HOLDMAINT-HS_HOLDGROUPT, sy-vline,
  WA_PIQIB_HOLDMAINT-HS_HOLDOTYPE, sy-vline,
  WA_PIQIB_HOLDMAINT-HS_HOLDOBJID, sy-vline,
  WA_PIQIB_HOLDMAINT-HS_SCOBJID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQIB_HOLDMAINT 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_PIQIB_HOLDMAINT 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_PIQIB_HOLDMAINT INTO WA_PIQIB_HOLDMAINT.


*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_PIQIB_HOLDMAINT_STR, 
HS_PLVAR TYPE STRING,
HS_STOTYPE TYPE STRING,
HS_STOBJID TYPE STRING,
HS_HOLD TYPE STRING,
HS_HOLDT TYPE STRING,
HS_STATE TYPE STRING,
HS_HOLDGROUP TYPE STRING,
HS_HOLDGROUPT TYPE STRING,
HS_HOLDOTYPE TYPE STRING,
HS_HOLDOBJID TYPE STRING,
HS_SCOBJID TYPE STRING,
HS_SCSHORT TYPE STRING,
HS_SCSTEXT TYPE STRING,
HS_BEGDA TYPE STRING,
HS_ENDDA TYPE STRING,
HS_PROCESS TYPE STRING,
HS_PROCESS_TP TYPE STRING,
HS_PROCESS_DATE TYPE STRING,
HS_PROCESS_TIME TYPE STRING,
HS_STHOLD TYPE STRING,
HS_CSHOLD TYPE STRING,
HS_BUFFERCODE TYPE STRING,
HS_FCODE TYPE STRING,
HS_REFRESH TYPE STRING,
HS_PERYR TYPE STRING,
HS_PERID TYPE STRING,
HS_PERYT TYPE STRING,
HS_PERIT TYPE STRING,
HS_SESSIONRLT TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
HOLD_STATUS TYPE STRING,
HOLD_COMMENT TYPE STRING,
USER_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQIB_HOLDMAINT_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_PIQIB_HOLDMAINT_STR-HS_PLVAR sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_STOTYPE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_STOBJID sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLD sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLDT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_STATE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLDGROUP sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLDGROUPT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLDOTYPE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_HOLDOBJID sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_SCOBJID sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_SCSHORT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_SCSTEXT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_BEGDA sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_ENDDA sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PROCESS sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PROCESS_TP sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PROCESS_DATE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PROCESS_TIME sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_STHOLD sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_CSHOLD sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_BUFFERCODE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_FCODE sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_REFRESH sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PERYR sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PERID sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PERYT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_PERIT sy-vline 
WA_PIQIB_HOLDMAINT_STR-HS_SESSIONRLT sy-vline 
WA_PIQIB_HOLDMAINT_STR-AEDTM sy-vline 
WA_PIQIB_HOLDMAINT_STR-UNAME sy-vline 
WA_PIQIB_HOLDMAINT_STR-REASN sy-vline 
WA_PIQIB_HOLDMAINT_STR-HISTO sy-vline 
WA_PIQIB_HOLDMAINT_STR-ITXNR sy-vline 
WA_PIQIB_HOLDMAINT_STR-HOLD_STATUS sy-vline 
WA_PIQIB_HOLDMAINT_STR-HOLD_COMMENT sy-vline 
WA_PIQIB_HOLDMAINT_STR-USER_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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