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Merge 5.5 into 10.1

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Marko Mäkelä
2019-05-28 11:25:45 +03:00
parent 626f2a1c17 0955462d0a
commit bf8fe324d2
12 changed files with 802 additions and 91 deletions
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8
sql/sql_const.h
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@ -234,6 +234,14 @@
#define HEAP_TEMPTABLE_LOOKUP_COST 0.05
#define DISK_TEMPTABLE_LOOKUP_COST 1.0
#define COST_MAX (DBL_MAX * (1.0 - DBL_EPSILON))
#define COST_ADD(c,d) (COST_MAX - (d) > (c) ? (c) + (d) : COST_MAX)
#define COST_MULT(c,f) (COST_MAX / (f) > (c) ? (c) * (f) : COST_MAX)
#define MY_CHARSET_BIN_MB_MAXLEN 1
/** Don't pack string keys shorter than this (if PACK_KEYS=1 isn't used). */