fix: SQL export/import round-trip for dropped statements and non-table objects

CHANGELOG.md

@@ -26,6 +26,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- SQL import dropped statements when the database executed them slower than the file was parsed, so a re-imported export could fail with errors like "relation does not exist". The parser now waits for each statement to be consumed before reading more. (#1264)
+- SQL import ignored the database dialect, so PostgreSQL dumps with dollar-quoted function bodies were split at semicolons inside the body. (#1264)
+- SQL export emitted `DROP TABLE` for views, materialized views, and foreign tables, so re-importing failed with "is not a table". It now emits `DROP VIEW`, `DROP MATERIALIZED VIEW`, or `DROP FOREIGN TABLE` to match the object. (#1264)
 - iOS: connections, groups, and tags no longer silently disappear after a TestFlight or App Store update. Persistence files are now stored with `.completeFileProtectionUntilFirstUserAuthentication` so they stay readable across background sync runs, load failures are no longer swallowed, and the sync engine refuses to overwrite local data when the load was not actually empty.
 
 ### Removed

Plugins/SQLExportPlugin/SQLExportPlugin.swift

@@ -230,11 +230,21 @@ final class SQLExportPlugin: ExportFormatPlugin, SettablePlugin {
         guard !dropTargets.isEmpty else { return }
         for table in dropTargets {
             let tableRef = dataSource.quoteIdentifier(table.name)
-            try fileHandle.write(contentsOf: "DROP TABLE IF EXISTS \(tableRef) CASCADE;\n".toUTF8Data())
+            let keyword = dropStatementKeyword(for: table.tableType)
+            try fileHandle.write(contentsOf: "\(keyword) IF EXISTS \(tableRef) CASCADE;\n".toUTF8Data())
         }
         try fileHandle.write(contentsOf: "\n".toUTF8Data())
     }
 
+    private func dropStatementKeyword(for tableType: String) -> String {
+        switch tableType {
+        case "view": return "DROP VIEW"
+        case "materialized view": return "DROP MATERIALIZED VIEW"
+        case "foreign table": return "DROP FOREIGN TABLE"
+        default: return "DROP TABLE"
+        }
+    }
+
     private func writeDependentTypesAndSequences(
         tables: [PluginExportTable],
         dataSource: any PluginExportDataSource,

TablePro/Core/Plugins/SqlFileImportSource.swift

@@ -50,7 +50,7 @@ final class SqlFileImportSource: PluginImportSource, @unchecked Sendable {
 
     func statements() async throws -> AsyncThrowingStream<(statement: String, lineNumber: Int), Error> {
         let fileURL = try await resolveURL()
-        return parser.parseFile(url: fileURL, encoding: encoding)
+        return parser.parseFile(url: fileURL, encoding: encoding, dialect: dialect)
     }
 
     func cleanup() {

TablePro/Core/Services/Export/ExportService.swift

@@ -153,7 +153,7 @@ final class ExportService {
             PluginExportTable(
                 name: table.name,
                 databaseName: table.databaseName,
-                tableType: table.type == .view ? "view" : "table",
+                tableType: table.type.rawValue.lowercased(),
                 optionValues: table.optionValues
             )
         }