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Overview
Comment:Improved optimizations of views as the right operand of a LEFT JOIN.
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SHA3-256: 41c27bc0ff1d3135cdb6273ede4595f5bb0c0e1e1d470ea1633cb525674cf431
User & Date: drh 2017-04-18 11:20:19
References
2017-07-29
03:26 New ticket [de3403bf] Column name shift due to LEFT JOIN query flattening. artifact: e6b7df69 user: drh
2017-06-20
16:15 New ticket [892fc34f] Incorrect query result when a LEFT JOIN subquery is flattened. artifact: d28d6544 user: drh
Context
2017-04-18
13:50
Use sqlite3_table_column_metadata() instead of a SELECT statement to check for the existence of a %_stat table in fts3. This leads to smaller and easier to test code. check-in: dc2a4802 user: dan tags: trunk
11:20
Improved optimizations of views as the right operand of a LEFT JOIN. check-in: 41c27bc0 user: drh tags: trunk
05:49
Refactor the fts3ColumnMethod() function so that all branches can be covered. check-in: e47fdb49 user: dan tags: trunk
2017-04-14
19:03
Add the TK_IF_NULL_ROW opcode to deal with non-NULL result columns in the result set of a view or subquery on the RHS of a LEFT JOIN that gets flattened. Closed-Leaf check-in: 3a5860d8 user: drh tags: left-join-view
Changes
Unified Diffs Side-by-Side Diffs Patch

Changes to src/expr.c.

Changes to src/parse.y.

Changes to src/select.c.

Changes to src/treeview.c.

Changes to src/vdbe.c.

Changes to src/where.c.

Changes to tool/addopcodes.tcl.