{"record":{"id":"4abb692e41c5d359","repo":"nautechsystems/nautilus_trader","slug":"failed-to-insert-into-block-table-e","errorCode":null,"errorMessage":"Failed to insert into block table: {e}","messagePattern":"Failed to insert into block table: (.+?)","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"crates/adapters/blockchain/src/cache/database.rs","lineNumber":492,"sourceCode":"        )\n        .bind(chain_id as i32)\n        .bind(block.number as i64)\n        .bind(block.hash.as_str())\n        .bind(block.parent_hash.as_str())\n        .bind(block.miner.as_str())\n        .bind(block.gas_limit as i64)\n        .bind(block.gas_used as i64)\n        .bind(block.timestamp.to_string())\n        .bind(block.base_fee_per_gas.as_ref().map(U256::to_string))\n        .bind(block.blob_gas_used.as_ref().map(U256::to_string))\n        .bind(block.excess_blob_gas.as_ref().map(U256::to_string))\n        .bind(block.l1_gas_price.as_ref().map(U256::to_string))\n        .bind(block.l1_gas_used.map(|v| v as i64))\n        .bind(block.l1_fee_scalar.map(|v| v as i64))\n        .execute(&self.pool)\n        .await\n        .map(|_| ())\n        .map_err(|e| anyhow::anyhow!(\"Failed to insert into block table: {e}\"))\n    }\n\n    /// Inserts multiple blocks in a single database operation using UNNEST for optimal performance.\n    ///\n    /// # Errors\n    ///\n    /// Returns an error if the database operation fails.\n    pub async fn add_blocks_batch(&self, chain_id: u32, blocks: &[Block]) -> anyhow::Result<()> {\n        if blocks.is_empty() {\n            return Ok(());\n        }\n\n        // Prepare vectors for each column\n        let mut numbers: Vec<i64> = Vec::with_capacity(blocks.len());\n        let mut hashes: Vec<String> = Vec::with_capacity(blocks.len());\n        let mut parent_hashes: Vec<String> = Vec::with_capacity(blocks.len());\n        let mut miners: Vec<String> = Vec::with_capacity(blocks.len());\n        let mut gas_limits: Vec<i64> = Vec::with_capacity(blocks.len());","sourceCodeStart":474,"sourceCodeEnd":510,"githubUrl":"https://github.com/nautechsystems/nautilus_trader/blob/18893faf8b356be3320add8de2f861b0b647cf06/crates/adapters/blockchain/src/cache/database.rs#L474-L510","documentation":"This error wraps a sqlx failure when inserting a single block row into the chain's block partition. The INSERT binds many block fields (including optional L1 gas fields as strings/ints); any database-level failure — connection, constraint, partition missing, or column type mismatch — is wrapped here.","triggerScenarios":"Calling the single-block insert method when the block partition for the chain doesn't exist, a constraint fails (e.g. duplicate key beyond ON CONFLICT handling, NOT NULL violation), or the connection drops.","commonSituations":"Inserting a block before create_block_partition was called; schema drift making bound types invalid (e.g. l1_gas_price as numeric text); database connectivity issues during live sync.","solutions":["Check the wrapped {e} for the exact database error (constraint vs connection vs missing relation)","Ensure create_block_partition(chain) ran before inserting blocks","Verify the block table schema matches the bound field types, especially L1 gas columns","Use the bulk UNNEST insert path for batches and retry after transient failures"],"exampleFix":"// before: insert may target a missing partition\ndb.insert_block(&chain, &block).await?;\n// after: guarantee partition exists once at startup\ndb.create_block_partition(&chain).await?;\ndb.insert_block(&chain, &block).await?;","handlingStrategy":"validation","validationCode":"// ensure the block partition exists before inserting\nlet part: (bool,) = sqlx::query_as(\n    \"SELECT EXISTS (SELECT 1 FROM pg_class WHERE relname = $1)\",\n).bind(format!(\"block_{}\", chain.chain_id)).fetch_one(&pool).await?;\nif !part.0 { db.create_block_partition(chain).await?; }","typeGuard":null,"tryCatchPattern":"match db.insert_block(&chain, &block).await {\n    Err(e) if e.to_string().contains(\"does not exist\") => {\n        db.create_block_partition(&chain).await?;\n        db.insert_block(&chain, &block).await?;\n    }\n    other => other?,\n}","preventionTips":["Always create the chain's block partition before the first insert","Prefer the bulk UNNEST insert path for batches over per-block inserts","Keep optional L1 gas fields' encodings in sync with column types after migrations","Wrap sync loops so transient connection errors are retried, not fatal"],"tags":["database","postgres","sqlx","insert"],"backgroundTag":"database-write-failed","analyzedSha":"18893faf8b356be3320add8de2f861b0b647cf06","analyzedAt":"2026-09-08T20:49:34.690Z","contentChangedAt":"2026-09-08T20:49:34.690Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}