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20 Commits

Author SHA1 Message Date
drh
e46ec734c7 Modify the generate_series() table-valued functions so that its first 
argument (the START value) is required.  Throw an error if that argument
is not supplied.  In this was the series.c loadable extension can be used
as a demonstration of how to code an xBestIndex function to require certain
parameters.  Compile with -DZERO_ARGUMENT_GENERATE_SERIES to obtain the
legacy behavior.

FossilOrigin-Name: 459d85a2898d6a53f43b4ad48d2f39edd1bbe37a4f97426a5d666c39c52576a4
 2021-07-16 17:04:17 +00:00
drh
0b1e70c4ce Enhance the generate_series() table-valued function to support negative 
step values.

FossilOrigin-Name: 9b60fc48706bb77b2d4fe27a7b5834a6dc229b4051a9285032da578e4f2849e6
 2020-12-03 14:21:26 +00:00
drh
d36f588f31 Fix harmless compiler warnings about unused function parameters. 
FossilOrigin-Name: 25d067c270966d9506db8bedf280883e32b69050b14bdbbeda4bb2d9a362619c
 2020-11-25 16:28:04 +00:00
drh
988af251d8 Fix the series.c and spellfix.c extensions to use SQLITE_VTAB_INNOCUOUS 
correctly.  Fix the documentation on sqlite3_vtab_config() to take into
account SQLITE_VTAB_INNOCUOUS and SQLITE_VTAB_DIRECTONLY.

FossilOrigin-Name: 9265cb7f026c0e959bd034d4cd94fe597744e0dd455d0a20736ee5f5bee880c8
 2020-01-21 12:29:02 +00:00
drh
2b1c2aad9f Create the "trusted_schema" pragma. Add sqlite3_vtab_config() calls to set 
the risk rank for many virtual tables.

FossilOrigin-Name: 4c21373c21c9b17b222ae65297a039a035e6ec6b505c00c33704e3c03f94f834
 2020-01-07 19:45:40 +00:00
drh
a69262c0f2 Add an assert() to the generate_series virtual table to verify 
assumptions about the design.

FossilOrigin-Name: cd13b499a20a7d476edb8500537edef4c5151410ba0300469ebf0f7ba16964b8
 2018-11-16 15:41:27 +00:00
drh
e4f90b7075 Update the generate_series() table-valued function to make use of the new 
SQLITE_CONSTRAINT return from xBestIndex.

FossilOrigin-Name: 4372ad644dda5a1fa46b6b6070092320c835439b41f598cbc041e9deef786988
 2018-11-16 15:08:31 +00:00
drh
92a2ec00eb Fix the generate_series virtual table so that it correctly returns no 
rows if any of its constraints are NULL.
Ticket [fac496b61722daf28].

FossilOrigin-Name: 3328e828e28ca7198fd1ce84503e649ab2278913a2cf85a0f0391f31d0c9c8d7
 2018-04-03 14:25:51 +00:00
dan
1273f8dafe Fix a comment describing the xRowid method of the "series" virtual table. No 
code changes.

FossilOrigin-Name: 868cd1960015dc1bf003f911dcc417a94540d1948617ea1838a48b5cff59afda
 2017-09-05 17:23:39 +00:00
drh
6c2d94f928 Fix a typo in the header comment of the "series.c" virtual table extension. 
FossilOrigin-Name: d637feb4e3032ee0067c204b56d2af5f7eab228e645f2e77b0b043c2b299724d
 2017-06-02 13:16:54 +00:00
drh
dbc49161c0 Allow the left-hand side of IN operators on virtual tables to have the 
aConstraintUsage[].omit flag clear.

FossilOrigin-Name: 1622623cbbfc4325c53d731aba78ca9c382ec612
 2016-03-02 03:28:07 +00:00
drh
47784529cc Add the optional -DSERIES_OMIT_CONSTRAINT_VERIFY=0 option to the series.c 
extension that implements the generate_series() virtual table.

FossilOrigin-Name: 3d9daa929c0abe6dc01e800ef343b0eef2f0c76a
 2016-03-02 00:58:49 +00:00
drh
889cb33b8f Better estimatedCost in the xBestIndex method of the generate_series vtab. 
FossilOrigin-Name: f2c16094a536e7ef62444d0fe38cbee2a4999426
 2016-03-01 02:11:50 +00:00
drh
1f2fc28134 Fix a corner-case bug in table-valued functions. Update the generate_series() 
virtual table to increase the performance estimate penalty for being
underspecified.

FossilOrigin-Name: 552bc9cb88bbe54b4cf5fdf66d1217e7a2047110
 2015-08-21 17:14:48 +00:00
drh
d8b1bfc6bf Fix corner-case memory management issues in table-valued functions. Change 
virtual table handling so that if xDestroy is missing the table is
eponymous only even if xCreate is present.

FossilOrigin-Name: 774e6a14b124bbae4da0e188b62aee9ffb8c3745
 2015-08-20 23:21:34 +00:00
drh
b81fba1930 Prevent the series.c extension from loading on older versions of SQLite that 
do not support xCreate==NULL.

FossilOrigin-Name: 3efc79427ef4686142d074cfe5b2f0a33af19b2e
 2015-08-20 18:28:46 +00:00
dan
01dced109f Fix a typo in series.c. 
FossilOrigin-Name: 23db7f50f14801c2cf56c006d7c7f593908b7158
 2015-08-20 16:16:37 +00:00
drh
509c3fc004 Fix eponymous virtual tables so that they do not automatically make the first 
column the rowid.  Enhance the generate_series virtual table to support rowid.

FossilOrigin-Name: a325a08599759471047e234ef9cfcc3cb110aafd
 2015-08-19 19:01:28 +00:00
drh
bc550df32f Improved comments on the generate_series virtual table. Test cases for 
ORDER BY rowid DESC with generate_series.

FossilOrigin-Name: fef44c37f31ca9fd7891cecdbe95cc46a987067b
 2015-08-19 18:19:49 +00:00
drh
398f872d1f Virtual table modules with a null xCreate method act as eponymous-only modules - 
they cannot be used in a CREATE VIRTUAL TABLE statement.  Add the series.c
extension that implements a postgres-like generate_series virtual table to
demonstrate this capability.

FossilOrigin-Name: c58426dbd5ea8b8440ebcc1214f79fa63d658216
 2015-08-19 13:54:20 +00:00