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Commit Graph

7 Commits

Author SHA1 Message Date
drh
f59b12fbc1 Optimizations to the SQL language grammar that result in a small size
reduction and speed increase.

FossilOrigin-Name: cb5d1f83e0a33d546d4c0cb817ef1f8440d1f738
2014-01-11 03:54:05 +00:00
drh
10f468f37a Remove the obsolete TK_CONST_FUNC token type.
FossilOrigin-Name: 9b4217f055e9bced186b4c56a5753bd6da7115b5
2013-11-21 14:44:38 +00:00
drh
6a2fe09387 Generalize the IS and IS NOT operators so that their right-hand side can be
an arbitrary expression and not simple the constant NULL.  They work like
= and <> except that NULL values compare equal to one another an unequal to
everything else.

FossilOrigin-Name: 98853f6104076c50ea92175e17a3254bfbbd4619
2009-09-23 02:29:36 +00:00
drh
7ba5bc5bf2 Factor the UMINUS and UPLUS tokens out of the parser so that the parser
tables can go back to using 8-bit values instead of 16-bit values.

FossilOrigin-Name: 3fc938c961fd7810594224b91a2d6e1ac9e48084
2009-09-22 20:08:34 +00:00
drh
7d10d5a6e1 Refactor the name resolution procedures in the code generator. (CVS 5569)
FossilOrigin-Name: daf730d1defa78fb8b80a78f9108ac35a13e09f6
2008-08-20 16:35:10 +00:00
drh
200a81dcb5 Disallow the ON CONFLICT clause on CHECK constraints. The syntax used to be
allowed but never worked, so this should not present compatibility problems.
Other internal grammar simplifications. (CVS 5546)

FossilOrigin-Name: 4cedc641ed39982ae8cbb9200aa1e2f37c878b73
2008-08-08 14:19:41 +00:00
drh
fa3b19ef3d Reduce the number of distinct token symbols in the parser so that the parser
can store tokens in a single byte and thus be smaller in size. (CVS 2776)

FossilOrigin-Name: 2dfc9863919c9eb1fd1064ab2817d752dd7f9293
2005-11-24 22:22:29 +00:00