chore: import upstream snapshot with attribution

server/ast/create_table.go

@@ -0,0 +1,125 @@
+// 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 (
+	"github.com/cockroachdb/errors"
+
+	vitess "github.com/dolthub/vitess/go/vt/sqlparser"
+
+	"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
+	"github.com/dolthub/doltgresql/server/auth"
+)
+
+// nodeCreateTable handles *tree.CreateTable nodes.
+func nodeCreateTable(ctx *Context, node *tree.CreateTable) (*vitess.DDL, error) {
+	if node == nil {
+		return nil, nil
+	}
+	if len(node.StorageParams) > 0 {
+		return nil, errors.Errorf("storage parameters are not yet supported")
+	}
+	// TODO: support tree.CreateTableOnCommitDrop and tree.CreateTableOnCommitDeleteRows
+	switch node.OnCommit {
+	case tree.CreateTableOnCommitDrop:
+		// is unsupported and ignored
+	case tree.CreateTableOnCommitDeleteRows:
+		// is unsupported and ignored
+	}
+	tableName, err := nodeTableName(ctx, &node.Table)
+	if err != nil {
+		return nil, err
+	}
+	var isTemporary bool
+	switch node.Persistence {
+	case tree.PersistencePermanent:
+		isTemporary = false
+	case tree.PersistenceTemporary:
+		isTemporary = true
+	case tree.PersistenceUnlogged:
+		return nil, errors.Errorf("UNLOGGED is not yet supported")
+	default:
+		return nil, errors.Errorf("unknown persistence strategy encountered")
+	}
+	var optSelect *vitess.OptSelect
+	if node.Using != "" {
+		return nil, errors.Errorf("USING is not yet supported")
+	}
+	if node.Tablespace != "" {
+		return nil, errors.Errorf("TABLESPACE is not yet supported")
+	}
+	if node.AsSource != nil {
+		selectStmt, err := nodeSelect(ctx, node.AsSource)
+		if err != nil {
+			return nil, err
+		}
+		optSelect = &vitess.OptSelect{
+			Select: selectStmt,
+		}
+	}
+	var optLike *vitess.OptLike
+	if len(node.Inherits) > 0 {
+		optLike = &vitess.OptLike{
+			LikeTables: []vitess.TableName{},
+		}
+		for _, table := range node.Inherits {
+			likeTable, err := nodeTableName(ctx, &table)
+			if err != nil {
+				return nil, err
+			}
+			optLike.LikeTables = append(optLike.LikeTables, likeTable)
+		}
+	}
+	if node.WithNoData {
+		return nil, errors.Errorf("WITH NO DATA is not yet supported")
+	}
+	ddl := &vitess.DDL{
+		Action:      vitess.CreateStr,
+		Table:       tableName,
+		IfNotExists: node.IfNotExists,
+		Temporary:   isTemporary,
+		OptSelect:   optSelect,
+		OptLike:     optLike,
+		Auth: vitess.AuthInformation{
+			AuthType:    auth.AuthType_CREATE,
+			TargetType:  auth.AuthTargetType_SchemaIdentifiers,
+			TargetNames: []string{tableName.DbQualifier.String(), tableName.SchemaQualifier.String()},
+		},
+	}
+	if err = assignTableDefs(ctx, node.Defs, ddl); err != nil {
+		return nil, err
+	}
+
+	if node.PartitionBy != nil {
+		switch node.PartitionBy.Type {
+		case tree.PartitionByList:
+			if len(node.PartitionBy.Elems) != 1 {
+				return nil, errors.Errorf("PARTITION BY LIST must have a single column or expression")
+			}
+		}
+
+		// GMS does not support PARTITION BY, so we parse it and ignore it
+		if ddl.TableSpec != nil {
+			ddl.TableSpec.PartitionOpt = &vitess.PartitionOption{
+				PartitionType: string(node.PartitionBy.Type),
+				Expr:          vitess.NewColName(string(node.PartitionBy.Elems[0].Column)),
+			}
+		}
+	}
+	if node.PartitionOf.Table() != "" {
+		return nil, errors.Errorf("PARTITION OF is not yet supported")
+	}
+	return ddl, nil
+}