![]() ![]() The SELECT clause specifies the output of the query. That the size of the query plan growth is quadratic with the recursion depth. You can adjust the recursion depth with the session property max_recursion_depth. Recursion depth is fixed, defaults to 10, and doesn’t depend on the actual Usage of outer joins, set operations, limit clause, and others is not always References to following queries are forbidden. WITH-queries, references to previous queries in the WITH list areĪllowed. Only single-element recursive cycles are supported. The following limitations apply as a result of following the SQL standard andĭue to implementation choices, in addition to WITH clause limitations: The rules mentioned above or it does not contain a recursive reference, it is ![]() If a WITH-query is not shaped according to The RECURSIVE clause applies to all queries in the WITH list, but notĪll of them must be recursive. Is required that types in the step relation can be coerced to base relation The types of the returned columns are those of the base relation. The final statement performs the sum operation of these elements with the This results in t having values 1, 2, 3 and 4 Third recursion uses the result from the second and adds one again: ![]() Second recursion uses the result from the first and adds one: 2 + 1 = 3 The recursion processing performs these steps: SELECT n + 1 FROM t WHERE n < 4 defines the In the preceding query the simple assignment VALUES (1) defines the
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