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Fixed many problems in the code of With_element::check_unrestricted_recursive().

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Added the check whether there are set functions in the specifications of recursive CTE.
Added the check whether there are recursive references in subqueries.
Introduced boolean system variable 'standards_compliant_cte'. By default it's set to 'on'.
When it's set to 'off' non-standard compliant CTE can be executed.
This commit is contained in:
Galina Shalygina 2016-05-19 22:07:53 +03:00
commit 46a2e41398
13 changed files with 675 additions and 52 deletions
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sql/share/errmsg-utf8.txt
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@ -7156,6 +7156,8 @@ ER_RECURSIVE_WITHOUT_ANCHORS
eng "No anchors for recursive WITH element '%s'"
ER_REF_TO_RECURSIVE_WITH_TABLE_IN_DERIVED
eng "Reference to recursive WITH table '%s' in materiazed derived"
ER_NOT_STANDARDS_COMPLIANT_RECURSIVE
eng "Restrictions imposed on recursive definitions are violated for table '%s'"
#
# Internal errors, not used
#