ABAP Select data from SAP table PC20A 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 PC20A 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 PC20A. 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 PC20A 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_PC20A TYPE STANDARD TABLE OF PC20A,
WA_PC20A TYPE PC20A,
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: <PC20A> TYPE PC20A.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_PC20A.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM PC20A
INTO TABLE IT_PC20A.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM PC20A
* INTO TABLE @DATA(IT_PC20A2).
*--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_PC20A INDEX 1 INTO DATA(WA_PC20A2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC20A ASSIGNING <PC20A>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<PC20A>-APZNR = 1.
<PC20A>-SEQNO = 1.
<PC20A>-KBUNN = 1.
<PC20A>-KGBNN = 1.
<PC20A>-KSTNN = 1.
ENDLOOP. LOOP AT IT_PC20A INTO WA_PC20A. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_PC20A-KPRNN, sy-vline,
WA_PC20A-FISTL, sy-vline,
WA_PC20A-GEBER, sy-vline,
WA_PC20A-AUFNN, sy-vline,
WA_PC20A-PSPNN, sy-vline,
WA_PC20A-FKBER, sy-vline.
ENDLOOP. *Add any further fields from structure WA_PC20A 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_PC20A 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_PC20A INTO WA_PC20A. *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 KSTNN CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PC20A-KSTNN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PC20A-KSTNN.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field AUFNN CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PC20A-AUFNN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PC20A-AUFNN.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ABPSP, internal->external for field PSPNN CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT' EXPORTING input = WA_PC20A-PSPNN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PC20A-PSPNN.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field GRANT_NBR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PC20A-GRANT_NBR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PC20A-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field SGMNT CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PC20A-SGMNT IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PC20A-SGMNT.
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_PC20A_STR,
APZNR TYPE STRING,
SEQNO TYPE STRING,
KBUNN TYPE STRING,
KGBNN TYPE STRING,
KSTNN TYPE STRING,
KPRNN TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
AUFNN TYPE STRING,
PSPNN TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
SGMNT TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR. DATA: WA_PC20A_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_PC20A_STR-APZNR sy-vline
WA_PC20A_STR-SEQNO sy-vline
WA_PC20A_STR-KBUNN sy-vline
WA_PC20A_STR-KGBNN sy-vline
WA_PC20A_STR-KSTNN sy-vline
WA_PC20A_STR-KPRNN sy-vline
WA_PC20A_STR-FISTL sy-vline
WA_PC20A_STR-GEBER sy-vline
WA_PC20A_STR-AUFNN sy-vline
WA_PC20A_STR-PSPNN sy-vline
WA_PC20A_STR-FKBER sy-vline
WA_PC20A_STR-GRANT_NBR sy-vline
WA_PC20A_STR-SGMNT sy-vline
WA_PC20A_STR-BUDGET_PD sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.