parser: support cast as double (pingcap#399)

lyonzhi · Jul 26, 2019 · db60bb6 · db60bb6
1 parent 789ebcd
commit db60bb6
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Showing 4 changed files with 2,717 additions and 2,694 deletions.
diff --git a/mysql/util.go b/mysql/util.go
@@ -79,6 +79,7 @@ var defaultLengthAndDecimalForCast = map[byte]lengthAndDecimal{
 	TypeNewDecimal: {11, 0},
 	TypeDuration:   {10, 0},
 	TypeLonglong:   {22, 0},
+	TypeDouble:     {22, -1},
 	TypeJSON:       {4194304, 0}, // Flen differs.
 }