Commit Graph

11 Commits

Author SHA1 Message Date
drh
1c75c9d7f1 Ensure that the Expr objects that describe indexed expressions are not modified
by code generation.  Fix for an assert() problem found by Jon Metzman using AFL.

FossilOrigin-Name: 34073ce87d88a02313217023ae92e15939192cd9
2015-12-21 15:22:13 +00:00
drh
68391acd5f Fix PRAGMA integrity_check so that it works with a UNIQUE index over
expressions.

FossilOrigin-Name: 113181cec4db418b07640d6b1967923992efd71a
2015-09-25 20:49:16 +00:00
drh
dae26fe518 Enhance the query planner so that it is able to use indexed expressions
to help fulfill an ORDER BY clause.

FossilOrigin-Name: 668fc1ebaf426f9eed3ed7865e41f1023dafebfb
2015-09-24 18:47:59 +00:00
drh
c5de2d0a05 Make sure joins work correctly when both sides of the join are connected
using indexed expressions.

FossilOrigin-Name: c2fcb03299f2872d7f97a540ea145519f8b2e5cc
2015-09-24 12:19:17 +00:00
drh
7269443281 Correctly handle the case of a WHERE-clause term with indexed expressions on
both sides of the == sign.

FossilOrigin-Name: d9b716a6bd6145b2e7733c04d86227df777cd473
2015-09-24 11:26:45 +00:00
drh
e63e8a6c78 Fix a crash that can occur with a skip-scan on an index with
expressions when SQLITE_ENABLE_EXPLAIN_COMMENTS is defined.

FossilOrigin-Name: 25f34cb9b576a2d4250a06a7dbf88010b1c11675
2015-09-18 18:09:28 +00:00
drh
0b8d255c37 Omit all use of Expr nodes for TK_AS, as those nodes no longer served a useful
purpose and in fact interferred with the query planner.

FossilOrigin-Name: 7ab0b258eabfcfb7f1b0bd1b12e166d2f267823d
2015-09-05 22:36:07 +00:00
drh
8b57642259 Fix a bug in error reporting when a UNIQUE index on expressions fails its
uniqueness test.

FossilOrigin-Name: 5a2c0e90a1933545b4768d91d8f7c42c8f391019
2015-08-31 23:09:42 +00:00
drh
390b88a448 Case should not be significant when comparing function names.
FossilOrigin-Name: e2f1caf117b0a9632d52246717ab202852982339
2015-08-31 18:13:01 +00:00
drh
1d85e405e6 Make the distinction between truly deterministic functions and date/time
functions which only return the same answer for a single query.  Only truly
deterministic functions are allowed in indexes.  Add new expression index
test cases.

FossilOrigin-Name: c77554b5c42327106a7b90334e9cc3c07b007c76
2015-08-31 17:34:41 +00:00
drh
47991425cb Improved analysis and usage of indexed expressions in the query planner.
FossilOrigin-Name: f8893696387cba9d293a05a68dc38228077b3dc5
2015-08-31 15:58:06 +00:00