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When implementing a multi-way compound SELECT using merge, try to balance

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the merge tree.

FossilOrigin-Name: bb8522fe0dc54282ec13672eba9b44ee08f9cb55c1663f1699a61bf96ec1fd04
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drh
2021-12-30 00:37:11 +00:00
parent 092ba22cca
commit 38cebe07bb
6 changed files with 180 additions and 23 deletions
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src/sqliteInt.h
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@@ -1764,6 +1764,7 @@ struct sqlite3 {
/* TH3 expects this value ^^^^^^^^^^ to be 0x40000. Coordinate any change */
#define SQLITE_BloomFilter 0x00080000 /* Use a Bloom filter on searches */
#define SQLITE_BloomPulldown 0x00100000 /* Run Bloom filters early */
#define SQLITE_BalancedMerge 0x00200000 /* Balance multi-way merges */
#define SQLITE_AllOpts 0xffffffff /* All optimizations */
/*