Fix wrongly parsed the Enum type with values (#109)

Author: git-hulk

parser/ast.go

@@ -3693,6 +3693,7 @@ func (e *EnumValue) Accept(visitor ASTVisitor) error {
 }
 
 type EnumValueList struct {
+	Name    *Ident
 	ListPos Pos
 	ListEnd Pos
 	Enums   []EnumValue
@@ -3708,18 +3709,24 @@ func (e *EnumValueList) End() Pos {
 
 func (e *EnumValueList) String() string {
 	var builder strings.Builder
+	builder.WriteString(e.Name.String())
+	builder.WriteByte('(')
 	for i, enum := range e.Enums {
 		if i > 0 {
 			builder.WriteString(", ")
 		}
 		builder.WriteString(enum.String())
 	}
+	builder.WriteByte(')')
 	return builder.String()
 }
 
 func (e *EnumValueList) Accept(visitor ASTVisitor) error {
 	visitor.enter(e)
 	defer visitor.leave(e)
+	if err := e.Name.Accept(visitor); err != nil {
+		return err
+	}
 	for i := range e.Enums {
 		if err := e.Enums[i].Accept(visitor); err != nil {
 			return err

parser/parser_column.go

@@ -767,7 +767,7 @@ func (p *Parser) parseColumnType(_ Pos) (Expr, error) { // nolint:funlen
 		case p.matchTokenKind(TokenString):
 			if peekToken, err := p.lexer.peekToken(); err == nil && peekToken.Kind == opTypeEQ {
 				// enum values
-				return p.parseEnumExpr(p.Pos())
+				return p.parseEnumExpr(ident,p.Pos())
 			}
 			// like Datetime('Asia/Dubai')
 			return p.parseColumnTypeWithParams(ident, p.Pos())
@@ -815,8 +815,9 @@ func (p *Parser) parseComplexType(name *Ident, pos Pos) (Expr, error) {
 	}, nil
 }
 
-func (p *Parser) parseEnumExpr(pos Pos) (*EnumValueList, error) {
+func (p *Parser) parseEnumExpr(name *Ident, pos Pos) (*EnumValueList, error) {
 	enumValueList := &EnumValueList{
+		Name: name,
 		ListPos: pos,
 		Enums:   make([]EnumValue, 0),
 	}
@@ -948,9 +949,6 @@ func (p *Parser) tryParseCompressionCodecs(pos Pos) (*CompressionCodec, error) {
 }
 
 func (p *Parser) parseEnumValueExpr(pos Pos) (*EnumValue, error) {
-	if _, err := p.consumeTokenKind(TokenString); err != nil {
-		return nil, err
-	}
 	name, err := p.parseString(pos)
 	if err != nil {
 		return nil, err

parser/testdata/ddl/create_table_with_enum_fields.sql

@@ -0,0 +1,10 @@
+CREATE TABLE t0 on cluster default_cluster
+(
+    `method` Enum8('GET'=1 , 'POST'=2, 'HEAD'=3, 'PUT'=4,'PATCH'=5, 'DELETE'=6, 'CONNECT'=7, 'OPTIONS'=8, 'TRACE'=9) CODEC(ZSTD(1)),
+    `timestamp` DateTime64(3) CODEC(DoubleDelta, ZSTD)
+)
+ENGINE = ReplicatedMergeTree('/clickhouse/tables/{layer}-{shard}', '{replica}')
+PARTITION BY toDate(timestamp)
+ORDER BY (method,timestamp)
+TTL toDate(timestamp) + toIntervalDay(3)
+SETTINGS index_granularity = 8192;

parser/testdata/ddl/format/create_table_with_enum_fields.sql

@@ -0,0 +1,14 @@
+-- Origin SQL:
+CREATE TABLE t0 on cluster default_cluster
+(
+    `method` Enum8('GET'=1 , 'POST'=2, 'HEAD'=3, 'PUT'=4,'PATCH'=5, 'DELETE'=6, 'CONNECT'=7, 'OPTIONS'=8, 'TRACE'=9) CODEC(ZSTD(1)),
+    `timestamp` DateTime64(3) CODEC(DoubleDelta, ZSTD)
+)
+ENGINE = ReplicatedMergeTree('/clickhouse/tables/{layer}-{shard}', '{replica}')
+PARTITION BY toDate(timestamp)
+ORDER BY (method,timestamp)
+TTL toDate(timestamp) + toIntervalDay(3)
+SETTINGS index_granularity = 8192;
+
+-- Format SQL:
+CREATE TABLE t0 ON CLUSTER default_cluster (`method` Enum8('GET'=1, 'POST'=2, 'HEAD'=3, 'PUT'=4, 'PATCH'=5, 'DELETE'=6, 'CONNECT'=7, 'OPTIONS'=8, 'TRACE'=9) CODEC(ZSTD(1)), `timestamp` DateTime64(3) CODEC(DoubleDelta, ZSTD)) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{layer}-{shard}', '{replica}') PARTITION BY toDate(timestamp) TTL toDate(timestamp) + toIntervalDay(3) SETTINGS index_granularity=8192 ORDER BY (method, timestamp);