alter table WIP

plugins/dbgate-plugin-mssql/src/frontend/driver.js

@@ -12,6 +12,8 @@ const dialect = {
   fallbackDataType: 'nvarchar(max)',
   explicitDropConstraint: false,
   enableConstraintsPerTable: true,
+  dropColumnDependencies: ['default', 'foreignKey', 'index'],
+  changeColumnDependencies: ['index'],
   anonymousPrimaryKey: false,
   quoteIdentifier(s) {
     return `[${s}]`;

plugins/dbgate-plugin-postgres/src/backend/drivers.js

@@ -74,7 +74,7 @@ const drivers = driverBases.map(driverBase => ({
     }
     const res = await client.query({ text: sql, rowMode: 'array' });
     const columns = extractPostgresColumns(res);
-    return { rows: res.rows.map(row => zipDataRow(row, columns)), columns };
+    return { rows: (res.rows || []).map(row => zipDataRow(row, columns)), columns };
   },
   stream(client, sql, options) {
     const query = new pg.Query({

plugins/dbgate-plugin-sqlite/src/frontend/driver.js

@@ -14,8 +14,10 @@ const dialect = {
   limitSelect: true,
   rangeSelect: true,
   offsetFetchRangeSyntax: false,
+  explicitDropConstraint: true,
   stringEscapeChar: "'",
   fallbackDataType: 'nvarchar(max)',
+  dropColumnDependencies: ['index'],
   quoteIdentifier(s) {
     return `[${s}]`;
   },