ABAP Select data from SAP table PZI01_LOG 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 PZI01_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 PZI01_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 PZI01_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_PZI01_LOG TYPE STANDARD TABLE OF PZI01_LOG,
      WA_PZI01_LOG TYPE PZI01_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: <PZI01_LOG> TYPE PZI01_LOG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PZI01_LOG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PZI01_LOG
  INTO TABLE IT_PZI01_LOG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PZI01_LOG
*  INTO TABLE @DATA(IT_PZI01_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_PZI01_LOG INDEX 1 INTO DATA(WA_PZI01_LOG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PZI01_LOG ASSIGNING <PZI01_LOG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PZI01_LOG>-BEGTM = 1.
<PZI01_LOG>-ENDTM = 1.
<PZI01_LOG>-STAT1 = 1.
<PZI01_LOG>-PTYPE = 1.
<PZI01_LOG>-ZTYPE = 1.

ENDLOOP.

LOOP AT IT_PZI01_LOG INTO WA_PZI01_LOG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PZI01_LOG-CLTIM, sy-vline,
  WA_PZI01_LOG-VTYPE, sy-vline,
  WA_PZI01_LOG-ZTART, sy-vline,
  WA_PZI01_LOG-ANZHL, sy-vline,
  WA_PZI01_LOG-BSART, sy-vline,
  WA_PZI01_LOG-ESART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PZI01_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_PZI01_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_PZI01_LOG INTO WA_PZI01_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PZI01_LOG_STR, 
BEGTM TYPE STRING,
ENDTM TYPE STRING,
STAT1 TYPE STRING,
PTYPE TYPE STRING,
ZTYPE TYPE STRING,
CLTIM TYPE STRING,
VTYPE TYPE STRING,
ZTART TYPE STRING,
ANZHL TYPE STRING,
BSART TYPE STRING,
ESART TYPE STRING,
VERSL TYPE STRING,
PTZNR TYPE STRING,
ALZNR TYPE STRING,
C1ZNR TYPE STRING,
PRZNR TYPE STRING,
ABZNR TYPE STRING,
KTZNR TYPE STRING,
ORIGS TYPE STRING,
INTKY TYPE STRING,
BGCOD TYPE STRING,
EGCOD TYPE STRING,
BTERM TYPE STRING,
ETERM TYPE STRING,
AESTA TYPE STRING,
SRTFD TYPE STRING,
VAR01 TYPE STRING,
VAR02 TYPE STRING,
BEGPOS TYPE STRING,
ENDPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PZI01_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_PZI01_LOG_STR-BEGTM sy-vline 
WA_PZI01_LOG_STR-ENDTM sy-vline 
WA_PZI01_LOG_STR-STAT1 sy-vline 
WA_PZI01_LOG_STR-PTYPE sy-vline 
WA_PZI01_LOG_STR-ZTYPE sy-vline 
WA_PZI01_LOG_STR-CLTIM sy-vline 
WA_PZI01_LOG_STR-VTYPE sy-vline 
WA_PZI01_LOG_STR-ZTART sy-vline 
WA_PZI01_LOG_STR-ANZHL sy-vline 
WA_PZI01_LOG_STR-BSART sy-vline 
WA_PZI01_LOG_STR-ESART sy-vline 
WA_PZI01_LOG_STR-VERSL sy-vline 
WA_PZI01_LOG_STR-PTZNR sy-vline 
WA_PZI01_LOG_STR-ALZNR sy-vline 
WA_PZI01_LOG_STR-C1ZNR sy-vline 
WA_PZI01_LOG_STR-PRZNR sy-vline 
WA_PZI01_LOG_STR-ABZNR sy-vline 
WA_PZI01_LOG_STR-KTZNR sy-vline 
WA_PZI01_LOG_STR-ORIGS sy-vline 
WA_PZI01_LOG_STR-INTKY sy-vline 
WA_PZI01_LOG_STR-BGCOD sy-vline 
WA_PZI01_LOG_STR-EGCOD sy-vline 
WA_PZI01_LOG_STR-BTERM sy-vline 
WA_PZI01_LOG_STR-ETERM sy-vline 
WA_PZI01_LOG_STR-AESTA sy-vline 
WA_PZI01_LOG_STR-SRTFD sy-vline 
WA_PZI01_LOG_STR-VAR01 sy-vline 
WA_PZI01_LOG_STR-VAR02 sy-vline 
WA_PZI01_LOG_STR-BEGPOS sy-vline 
WA_PZI01_LOG_STR-ENDPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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