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Omit the OP_FilterInit opcode. Use OP_Blob to initialize each Bloom filter

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instead.  Size the Bloom filter based on sqlite_stat1 size estimates rather
than a run-time measurement for improved testability.

FossilOrigin-Name: 8a9036ee617a6ad93bfe827b0789773c49d3d45b085cb76fa4b9b20a41b79b97
This commit is contained in:
drh
2021-12-06 20:16:53 +00:00
parent 8c1c3e5e37
commit 50fb7e09b4
7 changed files with 56 additions and 78 deletions
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14
src/util.c
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@@ -1603,14 +1603,8 @@ LogEst sqlite3LogEstFromDouble(double x){
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
defined(SQLITE_ENABLE_STAT4) || \
defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
/*
** Convert a LogEst into an integer.
**
** Note that this routine is only used when one or more of various
** non-standard compile-time options is enabled.
*/
u64 sqlite3LogEstToInt(LogEst x){
u64 n;
@@ -1618,17 +1612,9 @@ u64 sqlite3LogEstToInt(LogEst x){
x /= 10;
if( n>=5 ) n -= 2;
else if( n>=1 ) n -= 1;
#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
if( x>60 ) return (u64)LARGEST_INT64;
#else
/* If only SQLITE_ENABLE_STAT4 is on, then the largest input
** possible to this routine is 310, resulting in a maximum x of 31 */
assert( x<=60 );
#endif
return x>=3 ? (n+8)<<(x-3) : (n+8)>>(3-x);
}
#endif /* defined SCANSTAT or STAT4 or ESTIMATED_ROWS */
/*
** Add a new name/number pair to a VList. This might require that the