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Immediately purge entries from the column cache when the associated register

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undergoes an affinity change.  Ticket [eb5548a849].  Enhance the
SQLITE_TESTCTRL_OPTIMIZATIONS setting of sqlite3_test_control so that it
can disable the column cache for testing purposes, in an effort to prevent
future problems of a similar nature to this one.

FossilOrigin-Name: ea4e57e1c1b6663ceb12872e31a8503f6c14e3d8
This commit is contained in:
drh
2009-12-24 16:00:28 +00:00
parent 07096f68ae
commit b6da74ebd5
7 changed files with 53 additions and 79 deletions
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2
src/select.c
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@@ -3917,7 +3917,7 @@ int sqlite3Select(
int r2;
r2 = sqlite3ExprCodeGetColumn(pParse,
pCol->pTab, pCol->iColumn, pCol->iTable, r1, 0);
pCol->pTab, pCol->iColumn, pCol->iTable, r1);
if( r1!=r2 ){
sqlite3VdbeAddOp2(v, OP_SCopy, r2, r1);
}