ABAP Select data from SAP table DB2QPLANHIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2QPLANHIST 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 DB2QPLANHIST. 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 DB2QPLANHIST 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_DB2QPLANHIST TYPE STANDARD TABLE OF DB2QPLANHIST,
      WA_DB2QPLANHIST TYPE DB2QPLANHIST,
      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: <DB2QPLANHIST> TYPE DB2QPLANHIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2QPLANHIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2QPLANHIST
  INTO TABLE IT_DB2QPLANHIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2QPLANHIST
*  INTO TABLE @DATA(IT_DB2QPLANHIST2).
*--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_DB2QPLANHIST INDEX 1 INTO DATA(WA_DB2QPLANHIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2QPLANHIST ASSIGNING <DB2QPLANHIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2QPLANHIST>-MEMBNM = 1.
<DB2QPLANHIST>-USERID = 1.
<DB2QPLANHIST>-QUERYNO = 1.
<DB2QPLANHIST>-PLANDATE = 1.
<DB2QPLANHIST>-PLANTIME = 1.

ENDLOOP.

LOOP AT IT_DB2QPLANHIST INTO WA_DB2QPLANHIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2QPLANHIST-PLANMSEC, sy-vline,
  WA_DB2QPLANHIST-PLANNO, sy-vline,
  WA_DB2QPLANHIST-QBLOCKNO, sy-vline,
  WA_DB2QPLANHIST-ACCESSCREATOR, sy-vline,
  WA_DB2QPLANHIST-ACCESSNAME, sy-vline,
  WA_DB2QPLANHIST-ACCESSTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2QPLANHIST 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_DB2QPLANHIST 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_DB2QPLANHIST INTO WA_DB2QPLANHIST.


*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_DB2QPLANHIST_STR, 
MEMBNM TYPE STRING,
USERID TYPE STRING,
QUERYNO TYPE STRING,
PLANDATE TYPE STRING,
PLANTIME TYPE STRING,
PLANMSEC TYPE STRING,
PLANNO TYPE STRING,
QBLOCKNO TYPE STRING,
ACCESSCREATOR TYPE STRING,
ACCESSNAME TYPE STRING,
ACCESSTYPE TYPE STRING,
ACCESS_DEGREE TYPE STRING,
ACCESS_PGROUP_ID TYPE STRING,
APPLNAME TYPE STRING,
BIND_TIME TYPE STRING,
COLLID TYPE STRING,
COLUMN_FN_EVAL TYPE STRING,
CORRELATION_NAME TYPE STRING,
CREATOR TYPE STRING,
CTEREF TYPE STRING,
GROUP_MEMBER TYPE STRING,
HINT_USED TYPE STRING,
IBM_SERVICE_DATA TYPE STRING,
INDEXONLY TYPE STRING,
JOIN_DEGREE TYPE STRING,
JOIN_PGROUP_ID TYPE STRING,
JOIN_TYPE TYPE STRING,
MATCHCOLS TYPE STRING,
MERGE_JOIN_COLS TYPE STRING,
METHOD TYPE STRING,
MIXOPSEQ TYPE STRING,
OPTHINT TYPE STRING,
PAGE_RANGE TYPE STRING,
PARALLELISM_MODE TYPE STRING,
PARENT_QBLOCKNO TYPE STRING,
PREFETCH TYPE STRING,
PRIMARY_ACCESSTY TYPE STRING,
PROGNAME TYPE STRING,
QBLOCK_TYPE TYPE STRING,
REMARKS TYPE STRING,
ROUTINE_ID TYPE STRING,
SORTC_GROUPBY TYPE STRING,
SORTC_JOIN TYPE STRING,
SORTC_ORDERBY TYPE STRING,
SORTC_PGROUP_ID TYPE STRING,
SORTC_UNIQ TYPE STRING,
SORTN_GROUPBY TYPE STRING,
SORTN_JOIN TYPE STRING,
SORTN_ORDERBY TYPE STRING,
SORTN_PGROUP_ID TYPE STRING,
SORTN_UNIQ TYPE STRING,
STMTTOKEN TYPE STRING,
TABLE_DCCSID TYPE STRING,
TABLE_ENCODE TYPE STRING,
TABLE_MCCSID TYPE STRING,
TABLE_SCCSID TYPE STRING,
TABLE_TYPE TYPE STRING,
TABNO TYPE STRING,
TIMESTAMP TYPE STRING,
TNAME TYPE STRING,
TSLOCKMODE TYPE STRING,
VERSION TYPE STRING,
WHEN_OPTIMIZE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2QPLANHIST_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_DB2QPLANHIST_STR-MEMBNM sy-vline 
WA_DB2QPLANHIST_STR-USERID sy-vline 
WA_DB2QPLANHIST_STR-QUERYNO sy-vline 
WA_DB2QPLANHIST_STR-PLANDATE sy-vline 
WA_DB2QPLANHIST_STR-PLANTIME sy-vline 
WA_DB2QPLANHIST_STR-PLANMSEC sy-vline 
WA_DB2QPLANHIST_STR-PLANNO sy-vline 
WA_DB2QPLANHIST_STR-QBLOCKNO sy-vline 
WA_DB2QPLANHIST_STR-ACCESSCREATOR sy-vline 
WA_DB2QPLANHIST_STR-ACCESSNAME sy-vline 
WA_DB2QPLANHIST_STR-ACCESSTYPE sy-vline 
WA_DB2QPLANHIST_STR-ACCESS_DEGREE sy-vline 
WA_DB2QPLANHIST_STR-ACCESS_PGROUP_ID sy-vline 
WA_DB2QPLANHIST_STR-APPLNAME sy-vline 
WA_DB2QPLANHIST_STR-BIND_TIME sy-vline 
WA_DB2QPLANHIST_STR-COLLID sy-vline 
WA_DB2QPLANHIST_STR-COLUMN_FN_EVAL sy-vline 
WA_DB2QPLANHIST_STR-CORRELATION_NAME sy-vline 
WA_DB2QPLANHIST_STR-CREATOR sy-vline 
WA_DB2QPLANHIST_STR-CTEREF sy-vline 
WA_DB2QPLANHIST_STR-GROUP_MEMBER sy-vline 
WA_DB2QPLANHIST_STR-HINT_USED sy-vline 
WA_DB2QPLANHIST_STR-IBM_SERVICE_DATA sy-vline 
WA_DB2QPLANHIST_STR-INDEXONLY sy-vline 
WA_DB2QPLANHIST_STR-JOIN_DEGREE sy-vline 
WA_DB2QPLANHIST_STR-JOIN_PGROUP_ID sy-vline 
WA_DB2QPLANHIST_STR-JOIN_TYPE sy-vline 
WA_DB2QPLANHIST_STR-MATCHCOLS sy-vline 
WA_DB2QPLANHIST_STR-MERGE_JOIN_COLS sy-vline 
WA_DB2QPLANHIST_STR-METHOD sy-vline 
WA_DB2QPLANHIST_STR-MIXOPSEQ sy-vline 
WA_DB2QPLANHIST_STR-OPTHINT sy-vline 
WA_DB2QPLANHIST_STR-PAGE_RANGE sy-vline 
WA_DB2QPLANHIST_STR-PARALLELISM_MODE sy-vline 
WA_DB2QPLANHIST_STR-PARENT_QBLOCKNO sy-vline 
WA_DB2QPLANHIST_STR-PREFETCH sy-vline 
WA_DB2QPLANHIST_STR-PRIMARY_ACCESSTY sy-vline 
WA_DB2QPLANHIST_STR-PROGNAME sy-vline 
WA_DB2QPLANHIST_STR-QBLOCK_TYPE sy-vline 
WA_DB2QPLANHIST_STR-REMARKS sy-vline 
WA_DB2QPLANHIST_STR-ROUTINE_ID sy-vline 
WA_DB2QPLANHIST_STR-SORTC_GROUPBY sy-vline 
WA_DB2QPLANHIST_STR-SORTC_JOIN sy-vline 
WA_DB2QPLANHIST_STR-SORTC_ORDERBY sy-vline 
WA_DB2QPLANHIST_STR-SORTC_PGROUP_ID sy-vline 
WA_DB2QPLANHIST_STR-SORTC_UNIQ sy-vline 
WA_DB2QPLANHIST_STR-SORTN_GROUPBY sy-vline 
WA_DB2QPLANHIST_STR-SORTN_JOIN sy-vline 
WA_DB2QPLANHIST_STR-SORTN_ORDERBY sy-vline 
WA_DB2QPLANHIST_STR-SORTN_PGROUP_ID sy-vline 
WA_DB2QPLANHIST_STR-SORTN_UNIQ sy-vline 
WA_DB2QPLANHIST_STR-STMTTOKEN sy-vline 
WA_DB2QPLANHIST_STR-TABLE_DCCSID sy-vline 
WA_DB2QPLANHIST_STR-TABLE_ENCODE sy-vline 
WA_DB2QPLANHIST_STR-TABLE_MCCSID sy-vline 
WA_DB2QPLANHIST_STR-TABLE_SCCSID sy-vline 
WA_DB2QPLANHIST_STR-TABLE_TYPE sy-vline 
WA_DB2QPLANHIST_STR-TABNO sy-vline 
WA_DB2QPLANHIST_STR-TIMESTAMP sy-vline 
WA_DB2QPLANHIST_STR-TNAME sy-vline 
WA_DB2QPLANHIST_STR-TSLOCKMODE sy-vline 
WA_DB2QPLANHIST_STR-VERSION sy-vline 
WA_DB2QPLANHIST_STR-WHEN_OPTIMIZE sy-vline      INTO ld_text SEPARATED BY SPACE.

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