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SQL Anywhere 11.0.1 (Français) » SQL Anywhere Server - SQL Usage » Remote Data and Bulk Operations » Accessing remote data » Internal operations

 

Query normalization

Referenced objects in the query are verified and some data type compatibility is checked.

For example, consider the following query:

SELECT *
FROM t1
WHERE c1 = 10;

The query normalization stage verifies that table t1 with a column c1 exists in the system tables. It also verifies that the data type of column c1 is compatible with the value 10. If the column's data type is datetime, for example, this statement is rejected.