[parser] support new aggregation function stddev_pop and stddev_samp

xhebox · Nov 2, 2018 · 19c3ed6 · 19c3ed6
2 parents fbc63dc + 6c76230
commit 19c3ed6
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Showing 5 changed files with 5,140 additions and 5,066 deletions.
diff --git a/parser/ast/functions.go b/parser/ast/functions.go
@@ -482,6 +482,10 @@ const (
 	AggFuncBitXor = "bit_xor"
 	// AggFuncBitAnd is the name of bit_and function.
 	AggFuncBitAnd = "bit_and"
+	// AggFuncStddevPop is the name of stddev_pop function
+	AggFuncStddevPop = "stddev_pop"
+	// AggFuncStddevSamp is the name of stddev_samp function
+	AggFuncStddevSamp = "stddev_samp"
 )
 
 // AggregateFuncExpr represents aggregate function expression.

diff --git a/parser/misc.go b/parser/misc.go
@@ -444,6 +444,10 @@ var tokenMap = map[string]int{
 	"STATS_META":               statsMeta,
 	"STATS_PERSISTENT":         statsPersistent,
 	"STATUS":                   status,
+	"STD":                      stddevPop,
+	"STDDEV":                   stddevPop,
+	"STDDEV_POP":               stddevPop,
+	"STDDEV_SAMP":              stddevSamp,
 	"STORED":                   stored,
 	"STRAIGHT_JOIN":            straightJoin,
 	"SUBDATE":                  subDate,
@@ -541,7 +545,7 @@ var btFuncTokenMap = map[string]int{
 	"STD":          builtinStddevPop,
 	"STDDEV":       builtinStddevPop,
 	"STDDEV_POP":   builtinStddevPop,
-	"STDDEV_SAMP":  builtinVarSamp,
+	"STDDEV_SAMP":  builtinStddevSamp,
 	"SUBDATE":      builtinSubDate,
 	"SUBSTR":       builtinSubstring,
 	"SUBSTRING":    builtinSubstring,