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8ddf686267c58ee0e519cfd9024f177e606be0ab
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1264 Commits

Author SHA1 Message Date
drh
f0c9145a36 If a table column name begins with "__hidden__" then do not include that 
column in "*" expansions in SELECT statements, nor fill in that column in
an INSERT INTO that omits the column list.  <b>This branch is a 
proof-of-concept only and is not intended to ever be merged into trunk.</b>

FossilOrigin-Name: 2dbffb3a3b20dba7d7d86c8ad2e34633f616c78a
 2015-11-18 18:43:15 +00:00
drh
f7ee8965a5 Fix the column name uniquifier so that it works with zero-length column names. 
FossilOrigin-Name: 791761ebac26c82ab67bdf867117ec5b5d8b20b0
 2015-11-15 11:13:49 +00:00
drh
96ceaf8680 Code simplification in sqlite3ColumnsFromExprList(). Update the %z format 
code so that it works with buffers obtained from sqlite3DbMalloc().  Add a
testcase for the slow column name uniquifier.

FossilOrigin-Name: 9272426057b6cb2d913519ff4c97aa6e211f7d51
 2015-11-14 22:04:22 +00:00
drh
0315e3cc14 Use a hash table to improve the preformance of column name uniqueness checking. 
FossilOrigin-Name: 5b08f29f458c600401860c7d70d8174cf61e69f8
 2015-11-14 20:52:43 +00:00
drh
ebed3fa3e1 Use randomness to prevent showness in the generated-column-name uniqueness 
checking.

FossilOrigin-Name: 6266712968a2cdcd6f5a3007d60c2cf1b3faf912
 2015-11-14 16:47:23 +00:00
drh
6e7722669e Proposed fix for an infinite loop bug in the WITH clause semantic analysis 
logic.

FossilOrigin-Name: 028475cb17a4b50baf0e9aba9bd3403d0a5d03b0
 2015-11-07 17:48:21 +00:00
drh
2476a6f2cb Enhance TreeView to show WITH clauses. Add an assert to detect the 
infinite loop behavior when certain kinds of errors occur on a nested
WITH clause.

FossilOrigin-Name: 2040d88e877bdb69de125a047cefb4a1558e89e8
 2015-11-07 15:19:59 +00:00
drh
0030aaad67 Merge recent enhancements from trunk. Version now 3.9.1. 
FossilOrigin-Name: 26fa091d68e89a0b6af61ba706d23a9f37e8025a
 2015-10-16 20:53:57 +00:00
drh
ce78bc6e7e Enhance the use of the column cache for UPDATE statements, making them 
more efficient for the case where a column is modified to be an expression
of other unmodified columns.

FossilOrigin-Name: 871e091df651b2275a672c35ff938bd4b6db0d7f
 2015-10-15 19:21:51 +00:00
drh
99f4647ef5 Merge in all the 3.9.0 updates from trunk. 
FossilOrigin-Name: 29444149342fc6b1ea8cd34c2c8e1fcb06eaa7ed
 2015-10-14 20:09:54 +00:00
drh
bfad7be78a Detect and report circularly defined views even if the views have the 
columns defined in the CREATE VIEW statement.

FossilOrigin-Name: 9ab9c8c6d747647f8ade58c2c4812fc69a813368
 2015-10-11 20:39:46 +00:00
drh
2906490b71 Remove an unreachable branch in the query flattener substitution logic. 
FossilOrigin-Name: 46ee3453a31b5e793d5aaad471cec1b1a11ab2cf
 2015-10-11 20:08:31 +00:00
drh
d12b636330 Improved substitution logic in the query flattener. Saves code space, and 
(more importantly) works correctly with table-valued functions.

FossilOrigin-Name: 3d0bd95e977db50c314d33ec292f99e0539d7b4a
 2015-10-11 19:46:59 +00:00
drh
728e0f91bb Compiler warning fixes: Rename some local variables from "j1" to avoid a 
name collision with the j1() bessel function in the math library.  Omit a
dummy initializer that gcc 4.6.3 does not like.

FossilOrigin-Name: 9ddef84d432813f3ece8012047d08441caa3315d
 2015-10-10 14:41:28 +00:00
drh
8b0cf38a12 Simplifications to the VDBE bytecode that handles LIMIT and OFFSET. 
FossilOrigin-Name: 041df7c2f14b95868a08090354ebb3308050790e
 2015-10-06 21:07:06 +00:00
drh
9f1ef45f6a Fix the LIMIT and OFFSET handling for UNION ALL queries that contain a 
subquery with ORDER BY on the right-hand side.  Fix for ticket
[b65cb2c8d91f668584].

FossilOrigin-Name: 4b631364354068af95a01630469cb6fbfe8b52fd
 2015-10-06 17:27:18 +00:00
drh
e2b7d7a0a1 Remove dead code, replacing with assert() statements that make sure the 
code really was dead.

FossilOrigin-Name: 0e317dda5dfd35b742afd70dacb5bfb39aa3fc4a
 2015-09-29 15:50:04 +00:00
drh
2679f14fd9 Report an error if the number of named columns in a VIEW is different 
from the number of result columns in the SELECT statement that implements
the VIEW.

FossilOrigin-Name: 6e4ac0be2de1a16fcbb2a314504122ad95aa257e
 2015-09-25 13:42:55 +00:00
drh
ae1a015c87 Merge trunk changes into the cursor-hints branch. 
FossilOrigin-Name: fbe637620fb7f2c9395c9ddac77d26746d6d4178
 2015-09-24 15:06:30 +00:00
drh
6230212f4a Do not allow table-valued function syntax to be used on a view. 
FossilOrigin-Name: 97cfe346e140e42a604375551f8168276bdbea11
 2015-09-19 20:27:08 +00:00
drh
163c29c5f3 Merge enhancements from trunk. 
FossilOrigin-Name: 25ee3000e94d60d8c1d7b980f416dcc33eb11105
 2015-09-03 14:39:33 +00:00
drh
076e85f59c Add the sqlite3VdbeLoadString() and sqlite3VdbeMultiLoad() routines to help 
with code generation, especially on PRAGMAs.  Rename sqlite3VdbeAddGoto()
to just sqlite3VdbeGoto().

FossilOrigin-Name: 847387ec8e6fef283899578fb232b2c23b00ee5b
 2015-09-03 13:46:12 +00:00
drh
0ff287fb01 Add and use the sqlite3VdbeChangeOpcode() routine. Simplify the implementation 
of the other sqlite3VdbeChange*() routines.

FossilOrigin-Name: 0a5b00e493efae58252f9fc7bde5a469645942d5
 2015-09-02 18:40:33 +00:00
drh
2991ba050b Add the sqlite3VdbeAddGoto(v,i) routine as a shorthand for 
sqlite3VdbeAddOp2(v,OP_Goto,0,i).

FossilOrigin-Name: be78f413df1b0d874b44a866ef6bf17543d7e8a2
 2015-09-02 18:19:00 +00:00
drh
4970d4032e Merge enhancements from trunk. 
FossilOrigin-Name: 29570a604806e2a60a8eef7eaf1dce022d2a7004
 2015-09-01 18:31:19 +00:00
drh
5579d59fb3 Evaluate expressions only once when the same expression is used in both the 
result set and in the ORDER BY clause.

FossilOrigin-Name: c2f3bbad778504681b39ab9399a1eb3c1a35ab3f
 2015-08-26 14:01:41 +00:00
drh
0576bc59a7 Refactor With.a.zErr into With.a.zCteErr. No logic changes. 
FossilOrigin-Name: 58ba73630ecc4bc58b03a7962dd45b305ef605ef
 2015-08-26 11:40:11 +00:00
drh
8981b904b5 Enhance the CREATE VIEW syntax so that the names of columns of the view can 
be specified after the view name.

FossilOrigin-Name: d794b34da6f9c77dfe17773b0b17b22de72cce7f
 2015-08-24 17:42:49 +00:00
drh
38978dd4ed Do not apply the WHERE-clause pushdown optimization to terms that originate 
in the ON or USING clause of a LEFT JOIN.  Fix for ticket
[6df18e949d3676290].

FossilOrigin-Name: 351bc22fa9b5a2e50da3583a882c5aa390bda19f
 2015-08-22 01:32:29 +00:00
drh
c1bd84124b Merge recent enhancements from trunk, including table-valued expressions. 
FossilOrigin-Name: b9927c876c1d4e146cb6a603d82cd2489594084d
 2015-08-20 23:45:59 +00:00
drh
8a48b9c0b1 Minor refactor of the SrcList object so that it is able to hold the argument 
list to a table-valued-function in the FROM clause.

FossilOrigin-Name: b919376147597c4b73421abe5788f893baf1560b
 2015-08-19 15:20:00 +00:00
drh
bec2476afc Merge in all the trunk changes from the previous year. This breaks the 
cursor-hint mechanism, but provides a baseline for trouble-shooting.

FossilOrigin-Name: 82a7a61bc0883b1e7432548e4890791717aa1bb3
 2015-08-13 20:07:13 +00:00
mistachkin
89b31d73a6 Fix compilation issues with SQLITE_OMIT_COMPOUND_SELECT defined. 
FossilOrigin-Name: 9c39d4644530ccc532f4ff26464106c6da43269a
 2015-07-16 17:29:27 +00:00
drh
b63ce02f57 Do not allow recursive CTEs that use aggregate queries in the recursive part. 
FossilOrigin-Name: 6d2999afbc25b9c238e4028f637c10eaaf0ec75e
 2015-07-05 22:15:10 +00:00
mistachkin
c29cbb0bec Fix harmless compiler warnings and one macro VVA_ONLY macro usage issue. 
FossilOrigin-Name: bcc8a75509aafda61feb6dcc074668c79611a662
 2015-07-02 16:52:01 +00:00
drh
9c7c913cd6 Cache the sqlite3_context structure in the P4 operand of VDBE programs 
for faster SQL function dispatch.

FossilOrigin-Name: 2abc44eb3b9d489321baa50bc25e17dafbda3687
 2015-06-26 18:16:52 +00:00
drh
2ec18a3cce Mark some branches as unreachable after the recent change that recognizes 
mismatch result set sizes on compound SELECT statements sooner.

FossilOrigin-Name: c8d1f305b6e9dfc36b8e3f4ab92de4457884d903
 2015-06-23 23:31:52 +00:00
dan
923cadb1ae Test that the left and right sides of a compound SELECT operator have the same number of expressions in the expanded expression list before beginning to generate code. 
FossilOrigin-Name: 4df852ce26c95d5d23c83dbe9c59d2c3435acddf
 2015-06-23 12:19:55 +00:00
drh
606f2344e9 Pervent the likelihood() function from moving ON clause terms of a LEFT JOIN 
into the WHERE clause.
Fix for ticket [5f60b11fc8e23490e2]

FossilOrigin-Name: ed96e14adce4a4f94cc6838c46bc97937c4cb72a
 2015-06-18 14:32:51 +00:00
drh
38b4149ca1 Factor out the TreeView parse tree printing module into a separate file. 
FossilOrigin-Name: c32ce54ca46a4be4373983be6fd44b1f3a0250d1
 2015-06-08 15:08:15 +00:00
drh
b121dd14ac Code simplifications in select.c and where.c. 
FossilOrigin-Name: 4f20ac90bce8bd7ba43ef59af5cc4ef7aa282fe8
 2015-06-06 18:30:17 +00:00
drh
adc57f6834 Minor cleanup of the sqlite3Select() procedure. 
FossilOrigin-Name: f4c90d06bb941453d8110680c7b279e471e8f034
 2015-06-06 00:18:01 +00:00
drh
4490c40b90 Split FROM-clause subquery flattening and code generation into separate loops. 
FossilOrigin-Name: be8e3fc70e4c13b28b07985df3457960f58ffddd
 2015-06-05 22:33:39 +00:00
drh
bc8edba10a Provide one final Select tree dump prior to WHERE clause analysis 
when ".selecttrace 0x400" tracing bit is set with SELECTTRACE_ENABLED.
Analysis and debug changes only - normal builds are unaffected.

FossilOrigin-Name: 283bf0b64da7acc5aa5812fc659954965002d409
 2015-06-05 20:27:26 +00:00
drh
d62fbb50e6 Change the name of SrcList.a[].zIndex to the more descriptive 
SrcList.a[0].zIndexedBy.

FossilOrigin-Name: 6a9cf063379118dbb95c6cdc6d60af50e9867177
 2015-06-04 12:08:53 +00:00
drh
4c393a82df For FROM-clause subqueries that cannot be flattened, try to push relevant 
WHERE clause terms of the outer query down into the subquery in order to help
the subquery run faster and/or use less memory.

FossilOrigin-Name: 6df18e949d3676290785143993513ea1b917d729
 2015-06-02 18:09:18 +00:00
drh
05883a3409 Rename SQLITE_AFF_NONE to SQLITE_AFF_BLOB. 
FossilOrigin-Name: bce3f04186cd2d69414a5a98b5b77dc8f060554a
 2015-06-02 15:32:08 +00:00
drh
69b72d5a29 For FROM-clause subqueries that cannot be flattened, try to push WHERE clause 
terms of the outer query down into the subquery in order to help the subquery
run faster and/or use less memory.

FossilOrigin-Name: 297fae7551a2af9e600d833801ff79fca0602ad5
 2015-06-01 20:28:03 +00:00
drh
7cea7f95c7 Using "SELECT ALL" instead of just "SELECT" on a query that uses a single 
unflattenable subquery or view in its FROM clause will force the subquery to
be manifested into a temporary table rather than run incrementally using a
co-routine.  This is a stop-gap means of controlling the decision to manifest
while we try to work out a better to make that decision automatically.

FossilOrigin-Name: a29e117d7ecec05da949348689dbfb0d3acb1280
 2015-05-29 01:35:19 +00:00
drh
fccda8a162 CTEs have never add working rowids. So disallow the use of the "rowid" column 
within CTEs.

FossilOrigin-Name: 0055df0445932a43e42b318ef88672dcbe312c3a
 2015-05-27 13:06:55 +00:00