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Parents and children of check-in [7fecced4]

Fix the segfault problem of ticket [a7b7803e8d1e869] which involved the use of "AS" named result columns as logical terms of the WHERE clause. check-in: b3c9e8f8 user: drh tags: trunk
Proposed fix for ticket [a7b7803e8d1e8699cd8a]. check-in: 3d0e00c7 user: drh tags: tkt-a7b7803e
Better resolution of table and column names in joins where some of the terms of the FROM clause are parenthesized. check-in: 7344e791 user: drh tags: name-resolution-fix
Optimize the degenerate case of a FROM clause table name enclosed all by itself inside parentheses. Generate code as if the parentheses did not exist, rather than the old behavior of manifesting the parenthesized table into a transient table. Also, tag every FROM-clause SELECT subquery that is generated by a parenthesized FROM-clause expression using the SF_NestedFrom flag. The new SF_NestedFrom flag is not yet used for anything. check-in: 7fecced4 user: drh tags: trunk
Resolve names in FROM-clause subqueries prior to resolving names in the result set expressions of a SELECT statement. check-in: 9b67c633 user: drh tags: trunk