ABAP Select data from SAP table TRENQUEPRT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRENQUEPRT
*  INTO TABLE @DATA(IT_TRENQUEPRT2).
*--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_TRENQUEPRT INDEX 1 INTO DATA(WA_TRENQUEPRT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRENQUEPRT>-OPCODE = 1.
<TRENQUEPRT>-OPMODE = 1.
<TRENQUEPRT>-RETCODE = 1.
<TRENQUEPRT>-TIME_REM = 1.
<TRENQUEPRT>-TIME_REQU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRENQUEPRT-OBJECT, sy-vline,
  WA_TRENQUEPRT-UNAME, sy-vline,
  WA_TRENQUEPRT-USER, sy-vline,
  WA_TRENQUEPRT-USVB, sy-vline,
  WA_TRENQUEPRT-USTP, sy-vline,
  WA_TRENQUEPRT-CLIENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRENQUEPRT 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_TRENQUEPRT 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_TRENQUEPRT INTO WA_TRENQUEPRT.


*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_TRENQUEPRT_STR, 
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_TRENQUEPRT_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_TRENQUEPRT_STR-OPCODE sy-vline 
WA_TRENQUEPRT_STR-OPMODE sy-vline 
WA_TRENQUEPRT_STR-RETCODE sy-vline 
WA_TRENQUEPRT_STR-TIME_REM sy-vline 
WA_TRENQUEPRT_STR-TIME_REQU sy-vline 
WA_TRENQUEPRT_STR-OBJECT sy-vline 
WA_TRENQUEPRT_STR-UNAME sy-vline 
WA_TRENQUEPRT_STR-USER sy-vline 
WA_TRENQUEPRT_STR-USVB sy-vline 
WA_TRENQUEPRT_STR-USTP sy-vline 
WA_TRENQUEPRT_STR-CLIENT sy-vline 
WA_TRENQUEPRT_STR-TCODE sy-vline 
WA_TRENQUEPRT_STR-COLLUSER sy-vline 
WA_TRENQUEPRT_STR-COLLOBJ sy-vline 
WA_TRENQUEPRT_STR-COLLUNAME sy-vline 
WA_TRENQUEPRT_STR-PROG sy-vline 
WA_TRENQUEPRT_STR-DURATION sy-vline 
WA_TRENQUEPRT_STR-PROGPOS sy-vline 
WA_TRENQUEPRT_STR-GRANNR sy-vline 
WA_TRENQUEPRT_STR-STRINGLEN sy-vline 
WA_TRENQUEPRT_STR-ES2_RESPONSE sy-vline 
WA_TRENQUEPRT_STR-ES2_PROCESSING sy-vline 
WA_TRENQUEPRT_STR-ES2_WAITING sy-vline 
WA_TRENQUEPRT_STR-ES2_LOCKING sy-vline 
WA_TRENQUEPRT_STR-ER2_RESPONSE sy-vline 
WA_TRENQUEPRT_STR-ER2_PROCESSING sy-vline 
WA_TRENQUEPRT_STR-ER2_WAITING sy-vline 
WA_TRENQUEPRT_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.