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>If your application has successfully opened a connection to a database, all operations on this connection may cause errors. There are two classes of errors:</P
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>libdbi retrieves and stores the error codes of the database engine client library if it provides error codes in a suitable format. If the client library does not support error numbers as positive integers, the value DBI_ERROR_CLIENT indicates an error status instead. In addition a string may be provided which describes or further elaborates the error status. The possible values of error number and error message depend on the database engine used for the connection.</P
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>A number of errors may occur within the libdbi framework or within a database driver, e.g. if your program queries nonexistent columns or attempts to read past the last row of a result set. The possible error numbers and error messages are predefined by libdbi.</P
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>Use the function <A
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