{"record":{"id":"d9e980da3f12ffea","repo":"googleapis/mcp-toolbox","slug":"row-iteration-error-w","errorCode":null,"errorMessage":"row iteration error: %w","messagePattern":"row iteration error: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/sources/snowflake/snowflake.go","lineNumber":137,"sourceCode":"\t\tvalues := make([]interface{}, len(cols))\n\t\tvaluePtrs := make([]interface{}, len(cols))\n\t\tfor i := range values {\n\t\t\tvaluePtrs[i] = &values[i]\n\t\t}\n\n\t\tif err := rows.Scan(valuePtrs...); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"unable to scan row: %w\", err)\n\t\t}\n\n\t\tvMap := make(map[string]any)\n\t\tfor i, col := range cols {\n\t\t\tvMap[col] = values[i]\n\t\t}\n\t\tout = append(out, vMap)\n\t}\n\n\tif err := rows.Err(); err != nil {\n\t\treturn nil, fmt.Errorf(\"row iteration error: %w\", err)\n\t}\n\n\treturn out, nil\n}\n\nfunc initSnowflakeConnection(ctx context.Context, tracer trace.Tracer, name, account, user, password, database, schema, warehouse, role string) (*sqlx.DB, error) {\n\t//nolint:all // Reassigned ctx\n\tctx, span := sources.InitConnectionSpan(ctx, tracer, SourceType, name)\n\tdefer span.End()\n\n\t// Set defaults for optional parameters\n\tif warehouse == \"\" {\n\t\twarehouse = \"COMPUTE_WH\"\n\t}\n\tif role == \"\" {\n\t\trole = \"ACCOUNTADMIN\"\n\t}\n","sourceCodeStart":119,"sourceCodeEnd":155,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/internal/sources/snowflake/snowflake.go#L119-L155","documentation":"rows.Err() reported a failure after the row loop finished in RunSQL — the result stream errored during iteration (connection drop, query cancellation, or driver fault) even though earlier rows may have been read.","triggerScenarios":"Thrown at internal/sources/snowflake/snowflake.go:137 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Inspect the wrapped error for the underlying cause","Check for query timeouts and connection stability","Retry the statement on transient network errors"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}