ABAP Select data from SAP table TRENQUEREC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRENQUEREC
*  INTO TABLE @DATA(IT_TRENQUEREC2).
*--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_TRENQUEREC INDEX 1 INTO DATA(WA_TRENQUEREC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRENQUEREC>-EYE_ANF = 1.
<TRENQUEREC>-RECTYPE = 1.
<TRENQUEREC>-TIMESTAMP1 = 1.
<TRENQUEREC>-TIMESTAMP2 = 1.
<TRENQUEREC>-RECLEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRENQUEREC-DUMMY, sy-vline,
  WA_TRENQUEREC-OPCODE, sy-vline,
  WA_TRENQUEREC-OPMODE, sy-vline,
  WA_TRENQUEREC-RETCODE, sy-vline,
  WA_TRENQUEREC-TIME_REM, sy-vline,
  WA_TRENQUEREC-TIME_REQU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRENQUEREC 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_TRENQUEREC 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_TRENQUEREC INTO WA_TRENQUEREC.


*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_TRENQUEREC_STR, 
EYE_ANF TYPE STRING,
RECTYPE TYPE STRING,
TIMESTAMP1 TYPE STRING,
TIMESTAMP2 TYPE STRING,
RECLEN TYPE STRING,
DUMMY TYPE STRING,
OPCODE TYPE STRING,
OPMODE TYPE STRING,
RETCODE TYPE STRING,
TIME_REM TYPE STRING,
TIME_REQU TYPE STRING,
OBJECT TYPE STRING,
UNAME TYPE STRING,
USER TYPE STRING,
USVB TYPE STRING,
USTP TYPE STRING,
CLIENT TYPE STRING,
TCODE TYPE STRING,
COLLUSER TYPE STRING,
COLLOBJ TYPE STRING,
COLLUNAME TYPE STRING,
PROG TYPE STRING,
DURATION TYPE STRING,
PROGPOS TYPE STRING,
GRANNR TYPE STRING,
STRINGLEN TYPE STRING,
ES2_RESPONSE TYPE STRING,
ES2_PROCESSING TYPE STRING,
ES2_WAITING TYPE STRING,
ES2_LOCKING TYPE STRING,
ER2_RESPONSE TYPE STRING,
ER2_PROCESSING TYPE STRING,
ER2_WAITING TYPE STRING,
ER2_LOCKING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRENQUEREC_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_TRENQUEREC_STR-EYE_ANF sy-vline 
WA_TRENQUEREC_STR-RECTYPE sy-vline 
WA_TRENQUEREC_STR-TIMESTAMP1 sy-vline 
WA_TRENQUEREC_STR-TIMESTAMP2 sy-vline 
WA_TRENQUEREC_STR-RECLEN sy-vline 
WA_TRENQUEREC_STR-DUMMY sy-vline 
WA_TRENQUEREC_STR-OPCODE sy-vline 
WA_TRENQUEREC_STR-OPMODE sy-vline 
WA_TRENQUEREC_STR-RETCODE sy-vline 
WA_TRENQUEREC_STR-TIME_REM sy-vline 
WA_TRENQUEREC_STR-TIME_REQU sy-vline 
WA_TRENQUEREC_STR-OBJECT sy-vline 
WA_TRENQUEREC_STR-UNAME sy-vline 
WA_TRENQUEREC_STR-USER sy-vline 
WA_TRENQUEREC_STR-USVB sy-vline 
WA_TRENQUEREC_STR-USTP sy-vline 
WA_TRENQUEREC_STR-CLIENT sy-vline 
WA_TRENQUEREC_STR-TCODE sy-vline 
WA_TRENQUEREC_STR-COLLUSER sy-vline 
WA_TRENQUEREC_STR-COLLOBJ sy-vline 
WA_TRENQUEREC_STR-COLLUNAME sy-vline 
WA_TRENQUEREC_STR-PROG sy-vline 
WA_TRENQUEREC_STR-DURATION sy-vline 
WA_TRENQUEREC_STR-PROGPOS sy-vline 
WA_TRENQUEREC_STR-GRANNR sy-vline 
WA_TRENQUEREC_STR-STRINGLEN sy-vline 
WA_TRENQUEREC_STR-ES2_RESPONSE sy-vline 
WA_TRENQUEREC_STR-ES2_PROCESSING sy-vline 
WA_TRENQUEREC_STR-ES2_WAITING sy-vline 
WA_TRENQUEREC_STR-ES2_LOCKING sy-vline 
WA_TRENQUEREC_STR-ER2_RESPONSE sy-vline 
WA_TRENQUEREC_STR-ER2_PROCESSING sy-vline 
WA_TRENQUEREC_STR-ER2_WAITING sy-vline 
WA_TRENQUEREC_STR-ER2_LOCKING sy-vline      INTO ld_text SEPARATED BY SPACE.

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