DSQL API Limitations for Database Creation

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To create a new database in an API application:

1. Detach from any currently attached databases with ­isc_detach_database(). Detaching from a database automatically sets its database handle to NULL.
2. Build the CREATE DATABASE statement to process.
3. Execute the statement with isc_dsql_execute_immediate() or ­isc_dsql_exec_immed2().

For example, the following statements disconnect from any currently attached databases, and create a new database. Any existing database handles are set to NULL, so that they can be used to connect to the new database in future DSQL statements.

char *str = "CREATE DATABASE \"new_emp.ib\"";
. . .
isc_detach_database(status_vector, &db1);
isc_dsql_execute_immediate(status_vector, &db1, &trans, 0, str, 1, NULL);

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