property of TEXT values. Avoid unnecessary copying of text values destined
to become function parameters. All changes help improve performance of
doing UPDATEs on large JSON values that are indexed multiple ways.
FossilOrigin-Name: d0278cdedfa04fb0b61838ab9622be8a2c462f58d5c3ebc4c5f802a727d0974e
rely on there being no OOMs prior to entry into columnName(), as
[forum/forumpost/fb6811c2f9|forum post fb6811c2f9] demonstrates a technique
which could cause an OOM prior to entry into columnName().
FossilOrigin-Name: a63346d6a0c0ca7ba4c87499de2e461be9c77e9b5d98f2bebf308cdb6599f33c
"transaction" is confused and needs to be straightened out prior to moving
forward with this change.
FossilOrigin-Name: 4a145f07322d768a07619bed27e0390d50f3a01d07787b9296234a5ceb6f1218
that they reliably return SQLITE_ERROR (and not SQLITE_MISUSE) if they are
invoked on a parameter that did not have multi-value IN processing enabled
via a prior call to sqlite3_vtab_in(). See
[forum:/forumpost/a823d4a3d5f73def|forum thread a823d4a3d5f73def].
FossilOrigin-Name: 144326dc171025dc8b5a77bebd8de3c19d5244ab807f5aa41f95313a25b880bc
the number of bytes down to the next even number, to avoid creating a UTF16
string that is an odd number of bytes.
[forum:/forumpost/411199488d065f83|Forum post 411199488d065f83].
FossilOrigin-Name: b57e3c3db00a6bc6db20c82530479f9eba7e37b731f0da6fe81682e84c7ac916
unique. Change to ppVPrev to save a few bytes and a few CPU cycles.
FossilOrigin-Name: 34b8ea31877ae8b40729d37b3f51ae7e15f38be841881ea4a37c9c8f0a52896d
compiler is more likely to in-line the code. Performance increase and
size reduction.
FossilOrigin-Name: c6947a96e61f71aa61ca3d70d9e2612d784ab04d60fa88852b03cfce86b1bf2b
state into separate RUNNING and READY. This gives a size reduction and
performance increase.
FossilOrigin-Name: 5a50a42fde9477868fad31099f5fe976437825fac44f8b3a4cf6c739c7667bbb
that it represents, so that sqlite3_result() and similar can set the encoding
according to the prepared statement, even if the database encoding has
changed.
dbsqlfuzz c409b10d0a6bccf78ab00f47e1d29d42ee5b3565
FossilOrigin-Name: d4e19314f564126e180e091f9135c7bc55a10442edb46fbd3a4cfad21201dfa6
a preliminary step toward splitting RUN_STATE out into several other states.
FossilOrigin-Name: ff91191d232305d44ae6c0fbca2542a749422dc716fa1fd5d54f58c7d6052c14
value gets set to an SQL NULL, then the Mem.enc field is uninitialized. So
do not read it. This is a harmless OSSFuzz/ASAN found problem.
FossilOrigin-Name: 47d0b1c4cfc3d2d8f57a02079276bb70a205ffd0f18007dd39c92f813d4c87f5
perform any necessary text encoding conversions and check for oversize
strings and BLOBs. Thus those checks can be done where they are most
efficient and avoided in cases like OP_Function where they are more
expensive.
FossilOrigin-Name: d50b162b2f2e320af0889b931351f9443580465a933f6657fa98f437b6579277
NULL. [forum:/forumpost/ae8592cc73|Forum post ae8592cc73]. Test cases
in TH3.
FossilOrigin-Name: fff1243b594c190d15f14b7ca4e60d23519cd15134f275991c685966fcc24145
the revised loop in initMemArray() and reordering fields of Mem - not the
call the memcpy(). Changing the code to avoid memcpy() results in an even
better gain, and code that is far less dodgy.
FossilOrigin-Name: d74aa979530d4236f5900d2ef998b27065d352d7c18bcd822e5c8f1041a1a81c
little dodgy. I want to think about this more before merging to trunk.
Perhaps there is a cleaner way to accomplish the same.
FossilOrigin-Name: 7fefd8676110a53e6c98a697e2dbf820740fe602a1e83b6caa8d099c41a15d80
drh