ABAP Select data from SAP table LOG_HEADER_PO 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 LOG_HEADER_PO 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 LOG_HEADER_PO. 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 LOG_HEADER_PO 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_LOG_HEADER_PO TYPE STANDARD TABLE OF LOG_HEADER_PO,
      WA_LOG_HEADER_PO TYPE LOG_HEADER_PO,
      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: <LOG_HEADER_PO> TYPE LOG_HEADER_PO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOG_HEADER_PO
*  INTO TABLE @DATA(IT_LOG_HEADER_PO2).
*--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_LOG_HEADER_PO INDEX 1 INTO DATA(WA_LOG_HEADER_PO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LOG_HEADER_PO ASSIGNING <LOG_HEADER_PO>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOG_HEADER_PO>-AUFNR = 1.
<LOG_HEADER_PO>-EBELN = 1.
<LOG_HEADER_PO>-EBELP = 1.
<LOG_HEADER_PO>-GRPNR = 1.
<LOG_HEADER_PO>-WERKS = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOG_HEADER_PO-MATNR, sy-vline,
WA_LOG_HEADER_PO-TOTQTY, sy-vline,
WA_LOG_HEADER_PO-MEINS, sy-vline,
WA_LOG_HEADER_PO-PGEXPAND, sy-vline,
ENDLOOP. *Add any further fields from structure WA_LOG_HEADER_PO 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_LOG_HEADER_PO 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_LOG_HEADER_PO INTO WA_LOG_HEADER_PO. *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 AUFNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_LOG_HEADER_PO-AUFNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_LOG_HEADER_PO-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_LOG_HEADER_PO-EBELN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_LOG_HEADER_PO-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field GRPNR CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT' EXPORTING input = WA_LOG_HEADER_PO-GRPNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_LOG_HEADER_PO-GRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT' EXPORTING input = WA_LOG_HEADER_PO-MATNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_LOG_HEADER_PO-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_LOG_HEADER_PO-MEINS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_LOG_HEADER_PO-MEINS.
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_LOG_HEADER_PO_STR,
AUFNR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
GRPNR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
TOTQTY TYPE STRING,
MEINS TYPE STRING,
PGEXPAND TYPE STRING,END OF T_EKKO_STR. DATA: WA_LOG_HEADER_PO_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_LOG_HEADER_PO_STR-AUFNR sy-vline
WA_LOG_HEADER_PO_STR-EBELN sy-vline
WA_LOG_HEADER_PO_STR-EBELP sy-vline
WA_LOG_HEADER_PO_STR-GRPNR sy-vline
WA_LOG_HEADER_PO_STR-WERKS sy-vline
WA_LOG_HEADER_PO_STR-MATNR sy-vline
WA_LOG_HEADER_PO_STR-TOTQTY sy-vline
WA_LOG_HEADER_PO_STR-MEINS sy-vline
WA_LOG_HEADER_PO_STR-PGEXPAND sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.