chore: import upstream snapshot with attribution

server/ast/create_schema.go

@@ -0,0 +1,49 @@
+// Copyright 2023 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ast
+
+import (
+	vitess "github.com/dolthub/vitess/go/vt/sqlparser"
+
+	"github.com/dolthub/doltgresql/server/auth"
+
+	"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
+)
+
+// nodeCreateSchema handles *tree.CreateSchema nodes.
+func nodeCreateSchema(ctx *Context, node *tree.CreateSchema) (vitess.Statement, error) {
+	if node == nil {
+		return nil, nil
+	}
+
+	// CREATE SCHEMA AUTHORIZATION s1 creates a schema of the same name
+	schemaName := node.Schema
+	if schemaName == "" {
+		schemaName = node.AuthRole
+	}
+
+	return &vitess.DBDDL{
+		Action:           "CREATE",
+		SchemaOrDatabase: "schema",
+		DBName:           schemaName,
+		IfNotExists:      node.IfNotExists,
+		CharsetCollate:   nil, // TODO
+		Auth: vitess.AuthInformation{
+			AuthType:    auth.AuthType_CREATE,
+			TargetType:  auth.AuthTargetType_DatabaseIdentifiers,
+			TargetNames: []string{""},
+		},
+	}, nil
+}