ABAP Select data from SAP table PIQAGR_LOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAGR_LOG
*  INTO TABLE @DATA(IT_PIQAGR_LOG2).
*--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_PIQAGR_LOG INDEX 1 INTO DATA(WA_PIQAGR_LOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAGR_LOG>-DATLO = 1.
<PIQAGR_LOG>-TIMLO = 1.
<PIQAGR_LOG>-ZONLO = 1.
<PIQAGR_LOG>-UNAME = 1.
<PIQAGR_LOG>-AGRIDAPP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAGR_LOG-ATTNOAPP, sy-vline,
  WA_PIQAGR_LOG-AGRTYPEAPP, sy-vline,
  WA_PIQAGR_LOG-AGRSTATAPP, sy-vline,
  WA_PIQAGR_LOG-ARCH_STATUSAPP, sy-vline,
  WA_PIQAGR_LOG-AGRREMARKAPP, sy-vline,
  WA_PIQAGR_LOG-AYEARAPP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAGR_LOG 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_PIQAGR_LOG 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_PIQAGR_LOG INTO WA_PIQAGR_LOG.


*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.

*Conversion exit CUNIT, internal->external for field CPUNITFUP
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_LOG-CPUNITFUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_LOG-CPUNITFUP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PIQAGR_LOG_STR, 
DATLO TYPE STRING,
TIMLO TYPE STRING,
ZONLO TYPE STRING,
UNAME TYPE STRING,
AGRIDAPP TYPE STRING,
ATTNOAPP TYPE STRING,
AGRTYPEAPP TYPE STRING,
AGRSTATAPP TYPE STRING,
ARCH_STATUSAPP TYPE STRING,
AGRREMARKAPP TYPE STRING,
AYEARAPP TYPE STRING,
APERIODAPP TYPE STRING,
AGRBEGDAAPP TYPE STRING,
AGRENDDAAPP TYPE STRING,
AGRDATEEAPP TYPE STRING,
AGRDATELAPP TYPE STRING,
AGRWEIGHTAPP TYPE STRING,
UPAGRIDAPP TYPE STRING,
LAST_DAY_ATTAPP TYPE STRING,
GRADESYMAPP TYPE STRING,
GRADEAPP TYPE STRING,
GRADESCALEAPP TYPE STRING,
AGRNOTRATEDAPP TYPE STRING,
AGRDATEAPP TYPE STRING,
AGRCOMPLETEDAPP TYPE STRING,
NOTEIDAPP TYPE STRING,
REGNUMAPP TYPE STRING,
GRADECHANGEDAPP TYPE STRING,
PUBLICATIONDATEAPP TYPE STRING,
CPATTEMPFUP TYPE STRING,
CPEARNEDFUP TYPE STRING,
CPGRADEDFUP TYPE STRING,
CPUNITFUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAGR_LOG_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_PIQAGR_LOG_STR-DATLO sy-vline 
WA_PIQAGR_LOG_STR-TIMLO sy-vline 
WA_PIQAGR_LOG_STR-ZONLO sy-vline 
WA_PIQAGR_LOG_STR-UNAME sy-vline 
WA_PIQAGR_LOG_STR-AGRIDAPP sy-vline 
WA_PIQAGR_LOG_STR-ATTNOAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRTYPEAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRSTATAPP sy-vline 
WA_PIQAGR_LOG_STR-ARCH_STATUSAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRREMARKAPP sy-vline 
WA_PIQAGR_LOG_STR-AYEARAPP sy-vline 
WA_PIQAGR_LOG_STR-APERIODAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRBEGDAAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRENDDAAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRDATEEAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRDATELAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRWEIGHTAPP sy-vline 
WA_PIQAGR_LOG_STR-UPAGRIDAPP sy-vline 
WA_PIQAGR_LOG_STR-LAST_DAY_ATTAPP sy-vline 
WA_PIQAGR_LOG_STR-GRADESYMAPP sy-vline 
WA_PIQAGR_LOG_STR-GRADEAPP sy-vline 
WA_PIQAGR_LOG_STR-GRADESCALEAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRNOTRATEDAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRDATEAPP sy-vline 
WA_PIQAGR_LOG_STR-AGRCOMPLETEDAPP sy-vline 
WA_PIQAGR_LOG_STR-NOTEIDAPP sy-vline 
WA_PIQAGR_LOG_STR-REGNUMAPP sy-vline 
WA_PIQAGR_LOG_STR-GRADECHANGEDAPP sy-vline 
WA_PIQAGR_LOG_STR-PUBLICATIONDATEAPP sy-vline 
WA_PIQAGR_LOG_STR-CPATTEMPFUP sy-vline 
WA_PIQAGR_LOG_STR-CPEARNEDFUP sy-vline 
WA_PIQAGR_LOG_STR-CPGRADEDFUP sy-vline 
WA_PIQAGR_LOG_STR-CPUNITFUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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