ABAP Select data from SAP table PRELQ into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRELQ
*  INTO TABLE @DATA(IT_PRELQ2).
*--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_PRELQ INDEX 1 INTO DATA(WA_PRELQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRELQ>-ANSSATXT = 1.
<PRELQ>-BANKINFO = 1.
<PRELQ>-BKNAME09 = 1.
<PRELQ>-BKNAME10 = 1.
<PRELQ>-COUNTFLD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRELQ-EMBNK010, sy-vline,
  WA_PRELQ-EMFNA010, sy-vline,
  WA_PRELQ-FULLNAME, sy-vline,
  WA_PRELQ-FULLNAM1, sy-vline,
  WA_PRELQ-LEBALTER, sy-vline,
  WA_PRELQ-MTGEBDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRELQ 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_PRELQ 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_PRELQ INTO WA_PRELQ.


*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_PRELQ_STR, 
ANSSATXT TYPE STRING,
BANKINFO TYPE STRING,
BKNAME09 TYPE STRING,
BKNAME10 TYPE STRING,
COUNTFLD TYPE STRING,
EMBNK010 TYPE STRING,
EMFNA010 TYPE STRING,
FULLNAME TYPE STRING,
FULLNAM1 TYPE STRING,
LEBALTER TYPE STRING,
MTGEBDAT TYPE STRING,
TRFART08 TYPE STRING,
TRFGEB08 TYPE STRING,
URLBTEXT TYPE STRING,
VTRAGSNR TYPE STRING,
ZLSTXT09 TYPE STRING,
ZAHLGWEG TYPE STRING,
ANREDE02 TYPE STRING,
LGTEXT08 TYPE STRING,
LGTEXT10 TYPE STRING,
MANAGERN TYPE STRING,
HIREDATE TYPE STRING,
FIREDATE TYPE STRING,
GESAMT08 TYPE STRING,
WAERS08 TYPE STRING,
BEGD2001 TYPE STRING,
ENDD2001 TYPE STRING,
NAMP0009 TYPE STRING,
SNAM0009 TYPE STRING,
RFPERNAM TYPE STRING,
ORGEHTXT TYPE STRING,
COMPNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRELQ_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_PRELQ_STR-ANSSATXT sy-vline 
WA_PRELQ_STR-BANKINFO sy-vline 
WA_PRELQ_STR-BKNAME09 sy-vline 
WA_PRELQ_STR-BKNAME10 sy-vline 
WA_PRELQ_STR-COUNTFLD sy-vline 
WA_PRELQ_STR-EMBNK010 sy-vline 
WA_PRELQ_STR-EMFNA010 sy-vline 
WA_PRELQ_STR-FULLNAME sy-vline 
WA_PRELQ_STR-FULLNAM1 sy-vline 
WA_PRELQ_STR-LEBALTER sy-vline 
WA_PRELQ_STR-MTGEBDAT sy-vline 
WA_PRELQ_STR-TRFART08 sy-vline 
WA_PRELQ_STR-TRFGEB08 sy-vline 
WA_PRELQ_STR-URLBTEXT sy-vline 
WA_PRELQ_STR-VTRAGSNR sy-vline 
WA_PRELQ_STR-ZLSTXT09 sy-vline 
WA_PRELQ_STR-ZAHLGWEG sy-vline 
WA_PRELQ_STR-ANREDE02 sy-vline 
WA_PRELQ_STR-LGTEXT08 sy-vline 
WA_PRELQ_STR-LGTEXT10 sy-vline 
WA_PRELQ_STR-MANAGERN sy-vline 
WA_PRELQ_STR-HIREDATE sy-vline 
WA_PRELQ_STR-FIREDATE sy-vline 
WA_PRELQ_STR-GESAMT08 sy-vline 
WA_PRELQ_STR-WAERS08 sy-vline 
WA_PRELQ_STR-BEGD2001 sy-vline 
WA_PRELQ_STR-ENDD2001 sy-vline 
WA_PRELQ_STR-NAMP0009 sy-vline 
WA_PRELQ_STR-SNAM0009 sy-vline 
WA_PRELQ_STR-RFPERNAM sy-vline 
WA_PRELQ_STR-ORGEHTXT sy-vline 
WA_PRELQ_STR-COMPNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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