ABAP Select data from SAP table VFLOGHDR into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFLOGHDR
*  INTO TABLE @DATA(IT_VFLOGHDR2).
*--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_VFLOGHDR INDEX 1 INTO DATA(WA_VFLOGHDR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VFLOGHDR ASSIGNING <VFLOGHDR>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFLOGHDR>-OBJECT = 1.
<VFLOGHDR>-SUBOBJECT = 1.
<VFLOGHDR>-FCCNU = 1.
<VFLOGHDR>-ALDATE = 1.
<VFLOGHDR>-ALTIME = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFLOGHDR-ALUSER, sy-vline,
WA_VFLOGHDR-ALTCODE, sy-vline,
WA_VFLOGHDR-ALPROG, sy-vline,
WA_VFLOGHDR-ALMODE, sy-vline,
WA_VFLOGHDR-PROBCLASS, sy-vline,
WA_VFLOGHDR-ALDATE_DEL, sy-vline.
ENDLOOP. *Add any further fields from structure WA_VFLOGHDR 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_VFLOGHDR 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_VFLOGHDR INTO WA_VFLOGHDR. *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 ALPHA, internal->external for field FCCNU CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_VFLOGHDR-FCCNU IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VFLOGHDR-FCCNU.
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_VFLOGHDR_STR,
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
FCCNU TYPE STRING,
ALDATE TYPE STRING,
ALTIME TYPE STRING,
ALUSER TYPE STRING,
ALTCODE TYPE STRING,
ALPROG TYPE STRING,
ALMODE TYPE STRING,
PROBCLASS TYPE STRING,
ALDATE_DEL TYPE STRING,
DEL_BEFORE TYPE STRING,
ALSTATE TYPE STRING,
CBOX TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR. DATA: WA_VFLOGHDR_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_VFLOGHDR_STR-OBJECT sy-vline
WA_VFLOGHDR_STR-SUBOBJECT sy-vline
WA_VFLOGHDR_STR-FCCNU sy-vline
WA_VFLOGHDR_STR-ALDATE sy-vline
WA_VFLOGHDR_STR-ALTIME sy-vline
WA_VFLOGHDR_STR-ALUSER sy-vline
WA_VFLOGHDR_STR-ALTCODE sy-vline
WA_VFLOGHDR_STR-ALPROG sy-vline
WA_VFLOGHDR_STR-ALMODE sy-vline
WA_VFLOGHDR_STR-PROBCLASS sy-vline
WA_VFLOGHDR_STR-ALDATE_DEL sy-vline
WA_VFLOGHDR_STR-DEL_BEFORE sy-vline
WA_VFLOGHDR_STR-ALSTATE sy-vline
WA_VFLOGHDR_STR-CBOX sy-vline
WA_VFLOGHDR_STR-STATUS sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.