ABAP Select data from SAP table PQCA5 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PQCA5 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 PQCA5. 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 PQCA5 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_PQCA5 TYPE STANDARD TABLE OF PQCA5,
      WA_PQCA5 TYPE PQCA5,
      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: <PQCA5> TYPE PQCA5.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PQCA5.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PQCA5
  INTO TABLE IT_PQCA5.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PQCA5
*  INTO TABLE @DATA(IT_PQCA52).
*--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_PQCA5 INDEX 1 INTO DATA(WA_PQCA52).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PQCA5 ASSIGNING <PQCA5>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PQCA5>-TEXT1 = 1.
<PQCA5>-TEXT2 = 1.
<PQCA5>-TEXT3 = 1.
<PQCA5>-TEXT4 = 1.
<PQCA5>-GDATE = 1.

ENDLOOP.

LOOP AT IT_PQCA5 INTO WA_PQCA5.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PQCA5-TEXT5, sy-vline,
  WA_PQCA5-GTIME, sy-vline,
  WA_PQCA5-UFLAG, sy-vline,
  WA_PQCA5-EXPAND, sy-vline,
  WA_PQCA5-KATALOG, sy-vline,
  WA_PQCA5-MFLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PQCA5 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_PQCA5 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_PQCA5 INTO WA_PQCA5.


*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_PQCA5_STR, 
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,
GDATE TYPE STRING,
TEXT5 TYPE STRING,
GTIME TYPE STRING,
UFLAG TYPE STRING,
EXPAND TYPE STRING,
KATALOG TYPE STRING,
MFLAG TYPE STRING,
ARROW TYPE STRING,
FRAME TYPE STRING,
SINFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PQCA5_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_PQCA5_STR-TEXT1 sy-vline 
WA_PQCA5_STR-TEXT2 sy-vline 
WA_PQCA5_STR-TEXT3 sy-vline 
WA_PQCA5_STR-TEXT4 sy-vline 
WA_PQCA5_STR-GDATE sy-vline 
WA_PQCA5_STR-TEXT5 sy-vline 
WA_PQCA5_STR-GTIME sy-vline 
WA_PQCA5_STR-UFLAG sy-vline 
WA_PQCA5_STR-EXPAND sy-vline 
WA_PQCA5_STR-KATALOG sy-vline 
WA_PQCA5_STR-MFLAG sy-vline 
WA_PQCA5_STR-ARROW sy-vline 
WA_PQCA5_STR-FRAME sy-vline 
WA_PQCA5_STR-SINFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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