The 'id' parameter indicates the variable or parameter to export from the GDX file. If a path or filename contains blanks, the name can be surrounded by quotes (").
Text file writing To write a text file, one can use the syntax i=inputfile.gdx txt=outputfile.txt id=x. A complete example is: execute_unload 'd:\tmp\result.gdx',x Įxecute 'gdxviewer.exe i=d:\tmp\result.gdx xls=d:\tmp\result.xls id=x' XLS writing To write an XLS file, one can use the syntax i=inputfile.gdx xls=outputfile.xls id=x. GDXViewer will load this file, and will continue to run interactively. Single parameter A single parameter is the filename of the GDX file. It is advised to first run the program interactively until the results are as intended. When running in batch mode, the same configuration and option settings are used as for the interactive system and they can be changed by running GDXviewer interactively using the Options menu (the settings are saved in an INI file). The GDXViewer utility from version 2.3 accepts several command line parameters, so it can be used in a batch environment. The following settings in Options|Configuration|SQL Insert were used: INSERT INTO dist(city1,city2,distance) VALUES('san-diego','topeka',1.4) Ĭan be generated with File|Export|SQL Insert script. INSERT INTO dist(city1,city2,distance) VALUES('san-diego','chicago',1.8) INSERT INTO dist(city1,city2,distance) VALUES('san-diego','new-york',2.5) INSERT INTO dist(city1,city2,distance) VALUES('seattle','topeka',1.8) INSERT INTO dist(city1,city2,distance) VALUES('seattle','chicago',1.7) INSERT INTO dist(city1,city2,distance) VALUES('seattle','new-york',2.5) This way is often much faster that using individual INSERT statements for each record.Īn SQL script with INSERT statements like: #Command line xls to mdb converter windows#
BULK INSERT writes a TAB delimited text file to the Windows TEMP directory and subsequently calls BULK INSERT to load that file. However a special facility called BULK INSERT is only available through the specialized SQL Server export tool. We can export to Microsoft SQL Server through the standard SQL export facility. If such a table already exists, names like name2, name3, are tried. When exporting data a new table is created with the name of the identifier.
for MS Access you can use double while for MS SQL server you can use float. The SQL data for double precision number is no always the same for each database. The Test Connection button will allow you to check the configuration and see if the database can be connected to. When clicking on an identifier, the right-hand-side will display the actual data for the identifier. The left-hand side of the window shows the index of the GDX file organized in a tree structure. There is an API and bindings for different languages such as Delphi, Kylix, VB6, VBA, VB.NET, C/C++, C#, Java, Fortran.Īfter loading a GDX file in gdxviewer the content of the file is displayed in list view.
You can write your own program to write a GDX file. This is not as useful as execute_unload but may have its use in special cases. $GDXOUT allows you to write data to a GDX file during GAMS compile time. The tool GDXXRW allows data from an Excel spreadsheet to be stored in a GDX file. The SQL2GMS tool can read data from virtually any SQL database (including any ODBC accessible database) and can create GDX files. The MDB2GMS tool can be used to convert data stored in MS Access tables to GDX files. In this example the sets i and j and the variable x are saved to the GDX file results.gdx. To selectively place identifiers in a GDX file you can use the execute_unload statement: Model transport / all /
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