ABAP Select data from SAP table DB2LOCKESCALATIONS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2LOCKESCALATIONS 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 DB2LOCKESCALATIONS. 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 DB2LOCKESCALATIONS 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_DB2LOCKESCALATIONS TYPE STANDARD TABLE OF DB2LOCKESCALATIONS,
      WA_DB2LOCKESCALATIONS TYPE DB2LOCKESCALATIONS,
      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: <DB2LOCKESCALATIONS> TYPE DB2LOCKESCALATIONS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2LOCKESCALATIONS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2LOCKESCALATIONS
  INTO TABLE IT_DB2LOCKESCALATIONS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2LOCKESCALATIONS
*  INTO TABLE @DATA(IT_DB2LOCKESCALATIONS2).
*--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_DB2LOCKESCALATIONS INDEX 1 INTO DATA(WA_DB2LOCKESCALATIONS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2LOCKESCALATIONS ASSIGNING <DB2LOCKESCALATIONS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2LOCKESCALATIONS>-LOCKDATE = 1.
<DB2LOCKESCALATIONS>-LOCKTIME = 1.
<DB2LOCKESCALATIONS>-SSID = 1.
<DB2LOCKESCALATIONS>-LOCKMEMN = 1.
<DB2LOCKESCALATIONS>-DBNAME = 1.

ENDLOOP.

LOOP AT IT_DB2LOCKESCALATIONS INTO WA_DB2LOCKESCALATIONS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2LOCKESCALATIONS-TSNAME, sy-vline,
  WA_DB2LOCKESCALATIONS-QWO337LS, sy-vline,
  WA_DB2LOCKESCALATIONS-QW0337LL, sy-vline,
  WA_DB2LOCKESCALATIONS-QW0337LH, sy-vline,
  WA_DB2LOCKESCALATIONS-QW0337SN, sy-vline,
  WA_DB2LOCKESCALATIONS-QW0337ST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2LOCKESCALATIONS 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_DB2LOCKESCALATIONS 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_DB2LOCKESCALATIONS INTO WA_DB2LOCKESCALATIONS.


*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_DB2LOCKESCALATIONS_STR, 
LOCKDATE TYPE STRING,
LOCKTIME TYPE STRING,
SSID TYPE STRING,
LOCKMEMN TYPE STRING,
DBNAME TYPE STRING,
TSNAME TYPE STRING,
QWO337LS TYPE STRING,
QW0337LL TYPE STRING,
QW0337LH TYPE STRING,
QW0337SN TYPE STRING,
QW0337ST TYPE STRING,
QW0337CI TYPE STRING,
QW0337PK TYPE STRING,
WPTYPE TYPE STRING,
WPNUMBER TYPE STRING,
WPID TYPE STRING,
ASHOST TYPE STRING,
CONNNAME TYPE STRING,
SAPSID TYPE STRING,
ABAPREP TYPE STRING,
TXCODE TYPE STRING,
ENDUSER TYPE STRING,
J2EESERV TYPE STRING,
QW0337TY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2LOCKESCALATIONS_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_DB2LOCKESCALATIONS_STR-LOCKDATE sy-vline 
WA_DB2LOCKESCALATIONS_STR-LOCKTIME sy-vline 
WA_DB2LOCKESCALATIONS_STR-SSID sy-vline 
WA_DB2LOCKESCALATIONS_STR-LOCKMEMN sy-vline 
WA_DB2LOCKESCALATIONS_STR-DBNAME sy-vline 
WA_DB2LOCKESCALATIONS_STR-TSNAME sy-vline 
WA_DB2LOCKESCALATIONS_STR-QWO337LS sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337LL sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337LH sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337SN sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337ST sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337CI sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337PK sy-vline 
WA_DB2LOCKESCALATIONS_STR-WPTYPE sy-vline 
WA_DB2LOCKESCALATIONS_STR-WPNUMBER sy-vline 
WA_DB2LOCKESCALATIONS_STR-WPID sy-vline 
WA_DB2LOCKESCALATIONS_STR-ASHOST sy-vline 
WA_DB2LOCKESCALATIONS_STR-CONNNAME sy-vline 
WA_DB2LOCKESCALATIONS_STR-SAPSID sy-vline 
WA_DB2LOCKESCALATIONS_STR-ABAPREP sy-vline 
WA_DB2LOCKESCALATIONS_STR-TXCODE sy-vline 
WA_DB2LOCKESCALATIONS_STR-ENDUSER sy-vline 
WA_DB2LOCKESCALATIONS_STR-J2EESERV sy-vline 
WA_DB2LOCKESCALATIONS_STR-QW0337TY sy-vline      INTO ld_text SEPARATED BY SPACE.

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