From 0132246ff596ff16a893e111ef7f2d511acd25e5 Mon Sep 17 00:00:00 2001
From: Shen Li <shenli3514@gmail.com>
Date: Sat, 9 Jul 2016 11:41:27 +0800
Subject: [PATCH] *: Support STATS_PERSISTENT option in CreateTableStmt (#1416)

Parsed but ignored. Just prevent error.
---
 ast/ddl.go            |  1 +
 parser/parser.y       | 13 ++++++++++++-
 parser/parser_test.go |  3 +++
 parser/scanner.l      |  3 +++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/ast/ddl.go b/ast/ddl.go
index af18edeeb0..f7838c9c91 100644
--- a/ast/ddl.go
+++ b/ast/ddl.go
@@ -535,6 +535,7 @@ const (
 	TableOptionMinRows
 	TableOptionDelayKeyWrite
 	TableOptionRowFormat
+	TableOptionStatsPersistent
 )
 
 // RowFormat types
diff --git a/parser/parser.y b/parser/parser.y
index c4bf0cb305..8e223ba0f6 100644
--- a/parser/parser.y
+++ b/parser/parser.y
@@ -272,6 +272,7 @@ import (
 	some 		"SOME"
 	space 		"SPACE"
 	start		"START"
+	statsPersistent	"STATS_PERSISTENT"
 	status		"STATUS"
 	stringType	"string"
 	subDate		"SUBDATE"
@@ -571,6 +572,7 @@ import (
 	SignedLiteral		"Literal or NumLiteral with sign"
 	Statement		"statement"
 	StatementList		"statement list"
+	StatsPersistentVal	"stats_persistent value"
 	StringName		"string literal or identifier"
 	StringList 		"string list"
 	ExplainableStmt		"explainable statement"
@@ -1964,7 +1966,7 @@ NotKeywordToken:
 |	"IFNULL" | "ISNULL" | "LAST_INSERT_ID" | "LCASE" | "LENGTH" | "LOCATE" | "LOWER" | "LTRIM" | "MAX" | "MICROSECOND" | "MIN"
 |	"MINUTE" | "NULLIF" | "MONTH" | "MONTHNAME" | "NOW" | "POW" | "POWER" | "RAND" | "SECOND" | "SQL_CALC_FOUND_ROWS" | "SUBDATE"
 |	"SUBSTRING" %prec lowerThanLeftParen | "SUBSTRING_INDEX" | "SUM" | "TRIM" | "RTRIM" | "UCASE" | "UPPER" | "VERSION"
-|	"WEEKDAY" | "WEEKOFYEAR" | "YEARWEEK" | "ROUND"
+|	"WEEKDAY" | "WEEKOFYEAR" | "YEARWEEK" | "ROUND" | "STATS_PERSISTENT"
 
 /************************************************************************************
  *
@@ -4190,7 +4192,16 @@ TableOption:
 	{
 		$$ = &ast.TableOption{Tp: ast.TableOptionRowFormat, UintValue: $1.(uint64)}
 	}
+|	"STATS_PERSISTENT" EqOpt StatsPersistentVal
+	{
+		$$ = &ast.TableOption{Tp: ast.TableOptionStatsPersistent} 
+	}
 
+StatsPersistentVal:
+	"DEFAULT"
+	{}
+|	LengthNum
+	{}
 
 TableOptionListOpt:
 	{
diff --git a/parser/parser_test.go b/parser/parser_test.go
index f783d2c987..f160661039 100644
--- a/parser/parser_test.go
+++ b/parser/parser_test.go
@@ -690,6 +690,9 @@ func (s *testParserSuite) TestDDL(c *C) {
 		{"create table t (c int) ROW_FORMAT = compact", true},
 		{"create table t (c int) ROW_FORMAT = redundant", true},
 		{"create table t (c int) ROW_FORMAT = dynamic", true},
+		{"create table t (c int) STATS_PERSISTENT = default", true},
+		{"create table t (c int) STATS_PERSISTENT = 0", true},
+		{"create table t (c int) STATS_PERSISTENT = 1", true},
 		// For check clause
 		{"create table t (c1 bool, c2 bool, check (c1 in (0, 1)), check (c2 in (0, 1)))", true},
 		{"CREATE TABLE Customer (SD integer CHECK (SD > 0), First_Name varchar(30));", true},
diff --git a/parser/scanner.l b/parser/scanner.l
index 3c9b0a8283..eb84ac563f 100644
--- a/parser/scanner.l
+++ b/parser/scanner.l
@@ -473,6 +473,7 @@ show		{s}{h}{o}{w}
 some		{s}{o}{m}{e}
 space		{s}{p}{a}{c}{e}
 start		{s}{t}{a}{r}{t}
+statsPersistent	{s}{t}{a}{t}{s}_{p}{e}{r}{s}{i}{s}{t}{e}{n}{t}
 status          {s}{t}{a}{t}{u}{s}
 subdate		{s}{u}{b}{d}{a}{t}{e}
 strcmp		{s}{t}{r}{c}{m}{p}
@@ -980,6 +981,8 @@ redundant		lval.item = string(l.val)
 			return space
 {start}			lval.item = string(l.val)
 			return start
+{statsPersistent}	lval.item = string(l.val)
+			return statsPersistent
 {status}		lval.item = string(l.val)
 			return status
 {global}		lval.item = string(l.val)