Implement PARALLEL keyword on queries

sql/create.go

@@ -38,6 +38,10 @@ func (p *parser) parseCreateStatement() (stmt *CreateStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }

sql/delete.go

@@ -47,6 +47,10 @@ func (p *parser) parseDeleteStatement() (stmt *DeleteStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }

sql/exprs.go

@@ -218,6 +218,23 @@ func (p *parser) parsePriority() (float64, error) {
 
 }
 
+func (p *parser) parseParallel() (int, error) {
+
+	if _, _, exi := p.mightBe(PARALLEL); !exi {
+		return 0, nil
+	}
+
+	tok, lit, err := p.shouldBe(NUMBER)
+	if err != nil {
+		return 0, &ParseError{Found: lit, Expected: []string{"number"}}
+	}
+
+	val, err := p.declare(tok, lit)
+
+	return int(val.(float64)), err
+
+}
+
 func (p *parser) parseType() (t, k string, err error) {
 
 	_, t, err = p.shouldBe(IDENT, STRING, PASSWORD)

sql/insert.go

@@ -44,6 +44,10 @@ func (p *parser) parseInsertStatement() (stmt *InsertStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }

sql/relate.go

@@ -56,6 +56,10 @@ func (p *parser) parseRelateStatement() (stmt *RelateStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }

sql/select.go

@@ -67,6 +67,10 @@ func (p *parser) parseSelectStatement() (stmt *SelectStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	if err = checkExpression(aggrs, stmt.Expr, stmt.Group); err != nil {
 		return nil, err
 	}

sql/tokens.go

@@ -163,6 +163,7 @@ const (
 	ON
 	OR
 	ORDER
+	PARALLEL
 	PASSWORD
 	PERMISSIONS
 	PRIORITY
@@ -335,6 +336,7 @@ var tokens = [...]string{
 	ON:              "ON",
 	OR:              "OR",
 	ORDER:           "ORDER",
+	PARALLEL:        "PARALLEL",
 	PASSWORD:        "PASSWORD",
 	PERMISSIONS:     "PERMISSIONS",
 	PRIORITY:        "PRIORITY",

sql/update.go

@@ -42,6 +42,10 @@ func (p *parser) parseUpdateStatement() (stmt *UpdateStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }

sql/upsert.go

@@ -44,6 +44,10 @@ func (p *parser) parseUpsertStatement() (stmt *UpsertStatement, err error) {
 		return nil, err
 	}
 
+	if stmt.Parallel, err = p.parseParallel(); err != nil {
+		return nil, err
+	}
+
 	return
 
 }