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ASA SQL Reference
SQL Functions
Alphabetical list of functions
Returns the plan optimization strategy of a SQL statement in XML format, as a string.
GRAPHICAL_PLAN (
string-expression [ statistics-level ],
[ cursor-type ],
[ update-status ] )
string-expression The SQL statement, which is commonly a SELECT statement but which may also be an UPDATE or DELETE.
statistics-level An integer. Statistics-level can be one of the following values:
| Value | Description |
|---|---|
| 0 | Include optimizer estimates only. (default) |
| 1 | Include actual summary statistics from execution. |
| 2 | Include detailed actual statistics. |
cursor-type A string. Cursor-type can be asensitive (default), insensitive, sensitive, or keyset-driven.
update-status A string parameter accepting one of the following values indicating how the optimizer should treat the given cursor:
| Value | Description |
|---|---|
| READ-ONLY | The cursor is read-only. |
| READ-WRITE (default) | The cursor can be read or written to. |
| FOR UPDATE | The cursor can be read or written to. This is exactly the same as READ-WRITE. |
SQL/92 Vendor extension.
SQL/99 Vendor extension.
Sybase Not supported by Adaptive Server Enterprise.
EXPLANATION function [Miscellaneous]
GRAPHICAL_ULPLAN function [Miscellaneous]
LONG_ULPLAN function [Miscellaneous]
SHORT_ULPLAN function [Miscellaneous]
The following Interactive SQL example passes a SELECT statement as a string parameter and returns the plan for executing the query. It saves the plan in the file plan.xml.
SELECT GRAPHICAL_PLAN( 'SELECT * FROM department WHERE dept_id > 100' ); OUTPUT TO plan.xml FORMAT FIXED
The following statement returns a string containing the graphical plan for a keyset-driven, updatable cursor over the query 'SELECT * FROM department WHERE ....'. It also causes the server to annotate the plan with actual execution statistics, in addition to the estimated statistics that were used by the optimizer.
SELECT GRAPHICAL_PLAN( 'SELECT * FROM department WHERE dept_id > 100', 2, 'keyset-driven', 'for update' )
In Interactive SQL, you can view the plan for any SQL statement on the Plan tab in the Results pane.