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To enable compile-time checking and binding an EDM query schema must specify which extension schemata it depends on by specifying the extension as follows in the GLOBAL section:

 

Code Block
titleExample
collapsetrue
QUERY_SCHEMA MyQueries FOR IFC4;
GLOBAL
   DECLARE trg  INSTANCE OF IFC4;
   DECLARE ex1  INSTANCE OF EXPRESS_EXTENSION_SCHEMA EEX_1001; -- implicit: FOR IFC4;

	-- ... addition declarations ...
END_GLOBAL;
 
-- ... normal query schema syntax ...
 
END_QUERY_SCHEMA;   

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