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SAP ABAP MATERIALS: ABAP REPORTS

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What is SAP ALV? ALV stands for ABAP List Viewer. ALV gives us a standard List format and interface to all our ABAP reports. ALV is created by a set of standard function modules provided by SAP. ALV provides a lot of inbuilt functions to our reports and some of the functions are listed below. Sorting of records Filtering of records Totals and Sub-totals the report output to Excel/HTML Changing the order of the columns in the report Hide the unwanted columns from the report Because of the above functions, ALV substantially decreases the report development time. ALV takes care of rendering the list and we can concentrate only on the data retrieval part. Some of the function modules used to create ALV reports are listed below. Function Module Description REUSE_ALV_LIST_DISPLAY

Display an ALV list

REUSE_ALV_GRID_DISPLAY

Display an ALV grid

REUSE_ALV_COMMENTARY_WRITE

Output List header information

REUSE_ALV_VARIANT_F4

Display variant selection dialog box

REUSE_ALV_VARIANT_EXISTENCE

Checks whether a variant exists

REUSE_ALV_FIELDCATALOG_MERGE Create field catalog from dictionary structure or internal table Simple ALV report. DATA: it_spfli TYPE TABLE OF spfli. SELECT * FROM spfli INTO TABLE it_spfli. CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING i_structure_name = 'SPFLI' TABLES t_outtab = it_spfli. Simple ALV Output List

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SAP ABAP MATERIALS: ABAP REPORTS

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Create a Simple SAP ALV Report ALV report is created using the standard function modules provided by SAP. An ALV report can be created using the following steps. Include SLIS type pool – SLIS type pool contains all the data types required by ALV function modules. Data retrieval – Code the logic to fetch the data from database table into an Internal Table. Build Field Catalog – Add the columns into an internal that you want to display in the ALV output list. the data table and field catalog table to ALV function module TYPE-POOLS: slis.

" SLIS contains all the ALV data types

*&---------------------------------------------------------------------* *& Data Declaration *&---------------------------------------------------------------------* DATA: it_sbook TYPE TABLE OF sbook. DATA: it_fieldcat TYPE slis_t_fieldcat_alv, wa_fieldcat TYPE slis_fieldcat_alv. *&---------------------------------------------------------------------* *& START-OF-SELECTION *&---------------------------------------------------------------------* START-OF-SELECTION. *Fetch data from the database SELECT * FROM sbook INTO TABLE it_sbook. *Build field catalog wa_fieldcat-fieldname = 'CARRID'. wa_fieldcat-seltext_m = 'Airline'. APPEND wa_fieldcat TO it_fieldcat.

" Fieldname in the data table " Column description in the output

wa_fieldcat-fieldname = 'CONNID'. wa_fieldcat-seltext_m = 'Con. No.'. APPEND wa_fieldcat TO it_fieldcat. wa_fieldcat-fieldname = 'FLDATE'. wa_fieldcat-seltext_m = 'Date'. APPEND wa_fieldcat TO it_fieldcat. wa_fieldcat-fieldname = 'BOOKID'. wa_fieldcat-seltext_m = 'Book. ID'. APPEND wa_fieldcat TO it_fieldcat. wa_fieldcat-fieldname = 'NAME'. wa_fieldcat-seltext_m = 'enger Name'. APPEND wa_fieldcat TO it_fieldcat. * data and field catalog to ALV function module to display ALV list CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING it_fieldcat = it_fieldcat TABLES t_outtab = it_sbook EXCEPTIONS program_error = 1 OTHERS = 2. Output

Field Cata SAP ALV The field catalog is a table which contains information on the fields to be displayed on the ALV output. First we need to build a field catalog before displaying any output in the ALV. We have the following three ways to build a field catalog. Automatically through a Data Dictionary structure. (Example in What is SAP ALV?) Manually in ABAP program. (Example in Create a simple ALV) Semi-automatically by combining the above two procedures.

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The third option is used in the following cases. We want to display all the fields from the DDIC structure but want to modify certain attributes like descriptions etc. We want to display most of the fields i.e. we want to hide certain fields. Add new fields. To generate a field catalog semi-automatically: Declare an internal table of type SLIS_T_FIELDCAT_ALV. Call function module REUSE_ALV_FIELDCATALOG_MERGE and the DDIC structure of the output table and the internal table for the field catalog. The function module generates the field catalog and fills the internal table accordingly. Read the rows you want to change, and adapt the fields accordingly. If your output table contains more fields than are stored in the Data Dictionary, you must append one row for each new field to the field catalog. Example Program TYPE-POOLS: slis.

" SLIS contains all the ALV data types

*&---------------------------------------------------------------------* *& Data Declaration *&---------------------------------------------------------------------* DATA: BEGIN OF wa_sbook, status(4). INCLUDE STRUCTURE sbook. DATA: END OF wa_sbook. DATA: it_sbook TYPE TABLE OF sbook. DATA: it_fieldcat TYPE slis_t_fieldcat_alv, wa_fieldcat TYPE slis_fieldcat_alv. *&---------------------------------------------------------------------* *& START-OF-SELECTION *&---------------------------------------------------------------------* START-OF-SELECTION. *Fetch data from the database SELECT * UP TO 10 ROWS FROM sbook INTO TABLE it_sbook. *Build field catalog wa_fieldcat-fieldname = 'STATUS'. wa_fieldcat-seltext_m = 'Status'. APPEND wa_fieldcat TO it_fieldcat.

" Fieldname in the data table " Column description in the output

*Merge Field Catalog CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE' EXPORTING i_structure_name = 'SBOOK' CHANGING ct_fieldcat = it_fieldcat EXCEPTIONS inconsistent_interface = 1 program_error = 2 OTHERS = 3. * data and field catalog to ALV function module to display ALV list CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING it_fieldcat = it_fieldcat TABLES t_outtab = it_sbook EXCEPTIONS program_error = 1 OTHERS = 2. Output

Status column is added to the field catalog along all the fields of structure SBOOK. Recommend this on Google



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