{"workflow":{"id":14057,"name":"Query your PostgreSQL data in plain English with GPT-4o-mini","views":48,"recentViews":2,"totalViews":48,"createdAt":"2026-03-15T05:03:18.769Z","description":"#  AI SQL Analytics Agent\n\n### Chat With Any PostgreSQL Database Using Natural Language\n\n![Architechure Demo.gif](fileId:4989)\n\nThis template turns your PostgreSQL database into an **AI-powered analytics assistant**.\n\nInstead of exporting data or uploading huge CSV files to an LLM, this workflow lets AI **query your database directly using SQL**, returning clean insights instantly.\n\nJust type your table name once and start asking questions in plain English.\n\nNo SQL required.","workflow":{"id":"A3a9KLboMNFMHd5h","meta":{"instanceId":"c82b47207d29d6bbd16f8c3d5109171507d277c02ef0bea2da2ba7e318714d85","templateCredsSetupCompleted":true},"name":"AI SQL Analytics Agent: Chat With Any PostgreSQL Database Using Natural Language","tags":[],"nodes":[{"id":"d8e5561d-5ac8-4cc0-970e-a1bb9238b9bd","name":"Chat Trigger","type":"@n8n/n8n-nodes-langchain.chatTrigger","position":[-768,176],"webhookId":"f2817be0-9ebe-41c8-a705-3046e49ac921","parameters":{"public":true,"options":{}},"typeVersion":1.4},{"id":"ab7f525e-93ba-441d-8b94-d5a4260e81d3","name":"Manage Table Name","type":"n8n-nodes-base.code","position":[-544,176],"parameters":{"jsCode":"// ───────────────────────────────────────────────────────────\n// TABLE NAME MANAGER v4.0\n//\n// Changes vs v3.2:\n//  - Static data keyed by sessionId → no cross-user pollution\n//  - Schema-prefix stripping (public.orders → orders)\n//  - Common-word blocklist prevents \"hello\" being saved as table\n//  - Emits same fields as before (backward-compat)\n// ───────────────────────────────────────────────────────────\n\nconst staticData = $getWorkflowStaticData('global');\nconst sessionId  = ($input.first().json.sessionId ?? 'default').replace(/[^a-zA-Z0-9_-]/g, '_');\nconst userMessage = ($input.first().json.chatInput ?? '').trim();\n\n// Per-session storage\nif (!staticData.sessions) staticData.sessions = {};\nif (!staticData.sessions[sessionId]) staticData.sessions[sessionId] = {};\nconst sess = staticData.sessions[sessionId];\n\n// ── RESET ────────────────────────────────────────────────────\nif (/^(reset|change|switch)\\s+table$/i.test(userMessage)) {\n  delete sess.tableName;\n  return [{\n    json: { chatInput: userMessage, tableName: null,\n            justSetTable: false, isReset: true, sessionId }\n  }];\n}\n\n// ── CAPTURE TABLE NAME ───────────────────────────────────────\n// Strip optional schema prefix (public.my_table → my_table)\nlet candidate = userMessage;\nconst dotIdx = candidate.indexOf('.');\nif (dotIdx !== -1) candidate = candidate.slice(dotIdx + 1);\n\nconst looksLikeIdentifier = /^[a-zA-Z_][a-zA-Z0-9_]{0,62}$/.test(candidate);\n\n// Blocklist — common greetings that match the identifier pattern\nconst RESERVED = new Set([\n  'hello','hi','hey','help','yes','no','ok','okay','thanks',\n  'sure','start','begin','go','done','exit','quit','stop',\n  'what','show','list','get','find','give','tell','run'\n]);\n\nlet justSetTable = false;\nif (!sess.tableName && looksLikeIdentifier && !RESERVED.has(candidate.toLowerCase())) {\n  sess.tableName = candidate;   // store the clean (no-schema) name\n  justSetTable = true;\n}\n\nreturn [{\n  json: {\n    chatInput:    userMessage,\n    tableName:    sess.tableName ?? null,\n    justSetTable,\n    isReset:      false,\n    sessionId\n  }\n}];"},"typeVersion":2},{"id":"03d7146e-1009-4ccf-90e0-6a241d04c556","name":"Need Schema?","type":"n8n-nodes-base.if","position":[-320,176],"parameters":{"options":{},"conditions":{"options":{"version":2,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"cond-has-table","operator":{"type":"string","operation":"notEmpty"},"leftValue":"={{ $json.tableName }}","rightValue":""},{"id":"cond-not-justset","operator":{"type":"boolean","operation":"notEquals"},"leftValue":"={{ $json.justSetTable }}","rightValue":true},{"id":"cond-not-reset","operator":{"type":"boolean","operation":"notEquals"},"leftValue":"={{ $json.isReset }}","rightValue":true}]}},"typeVersion":2.2},{"id":"ee74c609-c31a-49bf-928a-c3da7bd7a8ef","name":"Fetch Schema","type":"n8n-nodes-base.postgres","position":[-96,80],"parameters":{"query":"SELECT\n  column_name,\n  data_type,\n  is_nullable,\n  column_default\nFROM information_schema.columns\nWHERE\n  table_schema = 'public'\n  AND table_name = '{{ $('Manage Table Name').item.json.tableName }}'\nORDER BY ordinal_position\nLIMIT 120","options":{},"operation":"executeQuery"},"credentials":{"postgres":{"id":"va9yJcjXii2KpU7c","name":"Postgres account"}},"typeVersion":2.6},{"id":"a245eb4f-de7e-4e2c-9e2b-34b947b51d28","name":"Format Schema","type":"n8n-nodes-base.code","position":[128,80],"parameters":{"jsCode":"\nconst tableCtx   = $('Manage Table Name').first().json;\nconst schemaRows = $input.all();\nconst staticData = $getWorkflowStaticData('global');\n\nlet columnList = '';\nlet validColumnNames = [];\n\nif (schemaRows.length === 0 || !schemaRows[0].json.column_name) {\n  columnList = `⚠️ Table \"${tableCtx.tableName}\" was not found in schema public.\\nPlease check the table name and try again, or type \\`reset table\\` to start over.`;\n  staticData.validColumns   = [];\n  staticData.validTableName = null;\n} else {\n  const columns = schemaRows.map(row => ({\n    name:     row.json.column_name,\n    dtype:    row.json.data_type,\n    nullable: row.json.is_nullable === 'YES' ? 'nullable' : 'NOT NULL',\n    defVal:   row.json.column_default ? ` | default: ${row.json.column_default}` : '',\n    isMoney:  row.json.data_type === 'money'\n  }));\n\n  validColumnNames = columns.map(c => c.name);\n  staticData.validColumns    = validColumnNames;\n  staticData.validTableName  = tableCtx.tableName;\n\n  const truncated = schemaRows.length >= 120;\n  columnList = columns\n    .map(c => {\n      const castHint = c.isMoney ? ' ⚠️ money→cast: col::numeric' : '';\n      return `  - ${c.name.padEnd(28)} (${c.dtype}, ${c.nullable}${c.defVal}${castHint})`;\n    })\n    .join('\\n');\n  if (truncated) columnList += '\\n  … (first 120 columns shown)';\n}\n\n// Build shorthand → exact column map\nconst suffixes = ['_eur','_usd','_gbp','_share','_growth','_index',\n  '_price','_count','_total','_rate','_pct','_percent',\n  '_avg','_sum','_min','_max','_id','_code','_name'];\nconst mappings = [];\nfor (const name of validColumnNames) {\n  const n = name.toLowerCase();\n  for (const suffix of suffixes) {\n    if (n.endsWith(suffix)) {\n      const shorthand = n.slice(0, n.length - suffix.length);\n      if (shorthand.length > 1) {\n        mappings.push(`  If user says \"${shorthand}\" → exact column: ${name}`);\n      }\n      break;\n    }\n  }\n}\nconst conceptMap = mappings.length > 0\n  ? mappings.join('\\n')\n  : '  (all column names are self-explanatory)';\n\nreturn [{\n  json: {\n    chatInput:    tableCtx.chatInput,\n    tableName:    tableCtx.tableName,\n    justSetTable: tableCtx.justSetTable,\n    isReset:      tableCtx.isReset,\n    columnList,\n    conceptMap\n  }\n}];"},"typeVersion":2},{"id":"b1385865-6234-4727-a5fa-0a010ef53b8e","name":"Empty Schema","type":"n8n-nodes-base.set","position":[128,272],"parameters":{"options":{},"assignments":{"assignments":[{"id":"empty-col-list","name":"columnList","type":"string","value":"(schema not loaded — table not yet configured)"},{"id":"empty-concept-map","name":"conceptMap","type":"string","value":"(schema not loaded — table not yet configured)"}]},"includeOtherFields":true},"typeVersion":3.4},{"id":"448e26ba-7e19-4b7a-8f3f-31f557743264","name":"Unified Analytics Agent","type":"@n8n/n8n-nodes-langchain.agent","position":[472,176],"parameters":{"options":{"systemMessage":"You are an AI data analytics assistant for PostgreSQL data.\n\n## STATE\nTable: {{ $json.tableName ?? 'NOT SET' }} | justSet: {{ $json.justSetTable }} | reset: {{ $json.isReset ?? false }}\nUser: {{ $json.chatInput }}\n\n## COLUMNS — EXACT NAMES ONLY (copy character-for-character into SQL)\n{{ $json.columnList }}\n\n## SHORTHAND TRANSLATIONS (user says → SQL must use)\n{{ $json.conceptMap ?? '(schema not loaded)' }}\n\n⛔ NEVER use a column not listed above. \"revenue\" ≠ \"revenue_eur\". Use EXACT names only.\n⛔ If columnList contains \"⚠️ Table ... was not found\", do NOT call any tools. Tell the user the table was not found and suggest they type `reset table` to try again.\n\n---\n## STATES\n\n### ① NO TABLE (tableName = NOT SET)\nNo tools. Reply: \"👋 Type your PostgreSQL table name to begin. Type `reset table` anytime to switch.\"\n\n### ② JUST SET (justSetTable = true)\nNo tools. Reply: \"✅ Table `{{ $json.tableName }}` connected!\nColumns:\n{{ $json.columnList }}\nAsk me anything!\"\n\n### ③ RESET (isReset = true)\nNo tools. Reply: \"🔄 Cleared! Type your new table name.\"\n\n### ④ TABLE NOT FOUND (columnList starts with ⚠️)\nNo tools. Reply: \"❌ Table `{{ $json.tableName }}` was not found. Please check the name and type `reset table` to try a different one.\"\n\n### ⑤ ANALYTICS (tableName set, justSetTable=false, isReset=false, no ⚠️)\n\n**Call `Execute SQL Query` — self-correcting loop (max 2 calls total):**\n- Write SQL using ONLY the exact column names from the COLUMNS list above\n- If the tool returns `{ \"error\": \"...\" }`, diagnose and fix:\n  • \"column ... does not exist\" → find the correct name in COLUMNS list above\n  • \"function avg(money) does not exist\" → cast the column: col::numeric\n  • \"function round ... does not exist\" → cast before ROUND: ROUND(val::numeric, 2)\n  • \"operator does not exist: money ...\" → cast money column: col::numeric\n  • \"syntax error\" → review and fix the SQL structure\n  • Any other error → explain to user in plain English, do not retry\n- After fixing, call the tool exactly one more time\n- Never call the tool more than twice total\n- Never show the raw error or SQL to the user\n\n**SQL rules:**\n- No backticks, no semicolons, no markdown\n- ROUND needs cast: ROUND(AVG(col)::numeric, 2) ✅  |  ROUND(AVG(col), 2) ❌\n- **money columns (marked ⚠️ money→cast in the COLUMNS list) MUST be cast before ANY aggregate:**\n  AVG(col::numeric) ✅ | SUM(col::numeric) ✅ | ROUND(AVG(col::numeric)::numeric,2) ✅\n  AVG(col) ❌ — \"function avg(money) does not exist\"\n- SUM text columns: SUM(col::numeric)\n- Aliases: SUM(units_sold) AS total_units_sold\n- ORDER BY on ranked/time queries | LIMIT 20 for lists\n- CTEs for year-over-year\n\n**Output rules:**\n- Numbers: 1,234,567 | EUR: €1,234 | Ratios: 12.5%\n- Tables or bullets for multi-row\n- Never mention SQL, queries, or database internals\n- use Quick chart tool to create chat and always reply with chart also when giving the data"}},"typeVersion":3.1},{"id":"22f7dbf6-d64b-4951-ac16-2f066f3e2d6d","name":"OpenAI GPT-4o-mini","type":"@n8n/n8n-nodes-langchain.lmChatOpenAi","position":[352,400],"parameters":{"model":{"__rl":true,"mode":"list","value":"gpt-4o-mini"},"options":{"temperature":0},"builtInTools":{}},"credentials":{"openAiApi":{"id":"HrhGEV8sMWL0sZCh","name":"OpenAi account"}},"typeVersion":1.3},{"id":"a8747d73-262a-4a18-a262-d01490f64b94","name":"Chat Memory","type":"@n8n/n8n-nodes-langchain.memoryPostgresChat","position":[480,400],"parameters":{"sessionKey":"={{ $('Chat Trigger').item.json.sessionId }}","contextWindowLength":6},"credentials":{"postgres":{"id":"va9yJcjXii2KpU7c","name":"Postgres account"}},"typeVersion":1.3},{"id":"cee02d80-045a-4cc9-abe6-44cb364130f7","name":"Execute SQL Query","type":"n8n-nodes-base.postgresTool","position":[608,400],"parameters":{"query":"{{ $fromAI('sql_query', 'A complete valid PostgreSQL SELECT or WITH (CTE) query. No backticks, no semicolons.') }}","options":{},"operation":"executeQuery","descriptionType":"manual","toolDescription":"Executes a PostgreSQL SELECT or WITH (CTE) query. Returns rows as JSON on success. On failure returns { \"error\": \"<postgres error message>\" } — read the error, fix the SQL (wrong column name, bad cast, syntax, etc.) and call this tool ONE more time with the corrected query. Never call it more than twice total. Provide a plain query — no backticks, no semicolons, no markdown."},"credentials":{"postgres":{"id":"va9yJcjXii2KpU7c","name":"Postgres account"}},"typeVersion":2.5,"continueOnFail":true},{"id":"8ab38bf8-6dc2-4766-9ccf-16233bb46dd9","name":"Manual Trigger","type":"n8n-nodes-base.manualTrigger","position":[-640,688],"parameters":{},"typeVersion":1},{"id":"627af582-602e-4043-894e-a58db835c379","name":"⚙️ Config (Sync)","type":"n8n-nodes-base.set","position":[-416,688],"parameters":{"options":{},"assignments":{"assignments":[{"id":"sync-cfg-tablename","name":"table_name","type":"string","value":"bmw_global_sales"}]}},"typeVersion":3.4},{"id":"54eaaa6e-55a6-478f-b769-621ab8ab5260","name":"Fetch Google Sheet","type":"n8n-nodes-base.googleSheets","position":[32,688],"parameters":{"options":{},"sheetName":{"__rl":true,"mode":"list","value":"gid=0","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1BSx2AmyI7DAqxOwFcYT0kG70rueSY_QVm56LeCasRpU/edit#gid=0","cachedResultName":"Sheet1"},"documentId":{"__rl":true,"mode":"list","value":"1BSx2AmyI7DAqxOwFcYT0kG70rueSY_QVm56LeCasRpU","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1BSx2AmyI7DAqxOwFcYT0kG70rueSY_QVm56LeCasRpU/edit?usp=drivesdk","cachedResultName":"bmw_global_sales_2018_2025"}},"credentials":{"googleSheetsOAuth2Api":{"id":"2m4ZiLAfCt0fxDWU","name":"Google Sheets account"}},"typeVersion":4.7},{"id":"6e2faa14-2ede-45d1-aad6-56064f6ae6f8","name":"Insert Rows to Postgres","type":"n8n-nodes-base.postgres","position":[256,688],"parameters":{"table":{"__rl":true,"mode":"list","value":"bmw_global_sales","cachedResultName":"bmw_global_sales"},"schema":{"__rl":true,"mode":"list","value":"public"},"columns":{"value":{"year":"={{ $json.Year }}","model":"={{ $json.Model }}","month":"={{ $json.Month }}","region":"={{ $json.Region }}","bev_share":"={{ $json.BEV_Share }}","gdp_growth":"={{ $json.GDP_Growth }}","units_sold":"={{ $json.Units_Sold }}","revenue_eur":"={{ $json.Revenue_EUR }}","avg_price_eur":"={{ $json.Avg_Price_EUR }}","premium_share":"={{ $json.Premium_Share }}","fuel_price_index":"={{ $json.Fuel_Price_Index }}"},"schema":[{"id":"year","type":"number","display":true,"required":true,"displayName":"year","defaultMatch":false,"canBeUsedToMatch":true},{"id":"month","type":"number","display":true,"required":true,"displayName":"month","defaultMatch":false,"canBeUsedToMatch":true},{"id":"region","type":"string","display":true,"required":false,"displayName":"region","defaultMatch":false,"canBeUsedToMatch":true},{"id":"model","type":"string","display":true,"required":false,"displayName":"model","defaultMatch":false,"canBeUsedToMatch":true},{"id":"units_sold","type":"number","display":true,"required":false,"displayName":"units_sold","defaultMatch":false,"canBeUsedToMatch":true},{"id":"avg_price_eur","type":"string","display":true,"required":false,"displayName":"avg_price_eur","defaultMatch":false,"canBeUsedToMatch":true},{"id":"revenue_eur","type":"string","display":true,"required":false,"displayName":"revenue_eur","defaultMatch":false,"canBeUsedToMatch":true},{"id":"bev_share","type":"number","display":true,"required":false,"displayName":"bev_share","defaultMatch":false,"canBeUsedToMatch":true},{"id":"premium_share","type":"number","display":true,"required":false,"displayName":"premium_share","defaultMatch":false,"canBeUsedToMatch":true},{"id":"gdp_growth","type":"number","display":true,"required":false,"displayName":"gdp_growth","defaultMatch":false,"canBeUsedToMatch":true},{"id":"fuel_price_index","type":"number","display":true,"required":false,"displayName":"fuel_price_index","defaultMatch":false,"canBeUsedToMatch":true}],"mappingMode":"autoMapInputData","matchingColumns":[],"attemptToConvertTypes":false,"convertFieldsToString":false},"options":{}},"credentials":{"postgres":{"id":"va9yJcjXii2KpU7c","name":"Postgres account"}},"typeVersion":2.6},{"id":"7c0df0b0-8986-4537-a9a0-cdb2c4907c2b","name":"Truncate Table","type":"n8n-nodes-base.postgres","position":[-192,688],"parameters":{"query":"TRUNCATE TABLE {{ $json.table_name }}","options":{},"operation":"executeQuery"},"credentials":{"postgres":{"id":"va9yJcjXii2KpU7c","name":"Postgres account"}},"typeVersion":2.6},{"id":"3efea6d1-50fb-47a4-8bc1-ca2d58184a20","name":"QuickChart","type":"n8n-nodes-base.quickChartTool","position":[736,400],"parameters":{"data":"={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Data', ``, 'json') }}","chartOptions":{},"datasetOptions":{}},"typeVersion":1},{"id":"2199f7a4-bf7f-4459-82df-0bc099f54453","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[-1248,-48],"parameters":{"width":416,"height":784,"content":"This workflow lets you query your PostgreSQL database using natural language.\n\nInstead of writing SQL manually or exporting data, users can simply type questions and receive structured answers with charts. The workflow dynamically reads the table schema, ensures only valid columns are used, and generates safe SQL queries.\n\nUsers can connect to any table directly from chat by typing the table name. The workflow remembers the table for the session, so it does not need to be repeated. To switch tables, users can type `reset table` at any time.\n\n### How it works\n- User sends a message via chat\n- Table name is captured and stored per session\n- Schema is fetched once and reused for efficiency\n- AI generates SQL using only valid columns\n- Query is executed and results are returned\n- Charts are generated for visualization\n\n### Setup\n1. Connect your PostgreSQL credentials\n2. Ensure your table exists in the `public` schema\n3. (Optional) Configure Google Sheets sync for data ingestion\n4. Replace the default table name if using sync workflow\n5. Start by typing a table name, then ask questions\n\n### Customization\n- Modify system prompt for stricter SQL rules\n- Extend to support multiple schemas\n- Replace the LLM with any supported model"},"typeVersion":1},{"id":"a884bdb7-b101-46d9-a0b5-2c57ddbe640c","name":"Sticky Note1","type":"n8n-nodes-base.stickyNote","position":[-792,48],"parameters":{"color":"#FFFFFF","width":368,"height":288,"content":"Handles user input and session tracking  \nStores table name to avoid repeated input"},"typeVersion":1},{"id":"7a5c3be7-d047-4414-9e23-07e641d23184","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[-360,-16],"parameters":{"color":"#FFFFFF","width":624,"height":448,"content":"Handles user input and session tracking  \nStores table name to avoid repeated input"},"typeVersion":1},{"id":"f94c9c4d-dfca-4058-9bd9-f91368d28040","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[272,16],"parameters":{"color":"#FFFFFF","width":624,"height":528,"content":"Generates SQL from natural language  \nExecutes queries and formats results\nCreates charts from query results  \nHelps interpret data visually"},"typeVersion":1},{"id":"a82e2581-bdce-43ed-89c5-721394753221","name":"Sticky Note4","type":"n8n-nodes-base.stickyNote","position":[-704,592],"parameters":{"color":"#FFFFFF","width":1184,"height":288,"content":"Loads data from Google Sheets into PostgreSQL  \nUseful for scheduled or batch updates"},"typeVersion":1},{"id":"12a03ce6-1ce8-4a0a-a2a6-c30f9bcea08e","name":"Sticky Note5","type":"n8n-nodes-base.stickyNote","position":[-272,608],"parameters":{"color":"#BE2727","height":240,"content":"⚠️ Truncate Table will delete existing data  \nDisable or remove if not required"},"typeVersion":1}],"active":false,"pinData":{},"settings":{"binaryMode":"separate","availableInMCP":false,"executionOrder":"v1"},"versionId":"9c944b49-4572-4fe7-943e-d62572be8827","connections":{"QuickChart":{"ai_tool":[[{"node":"Unified Analytics Agent","type":"ai_tool","index":0}]]},"Chat Memory":{"ai_memory":[[{"node":"Unified Analytics Agent","type":"ai_memory","index":0}]]},"Chat Trigger":{"main":[[{"node":"Manage Table Name","type":"main","index":0}]]},"Empty Schema":{"main":[[{"node":"Unified Analytics Agent","type":"main","index":0}]]},"Fetch Schema":{"main":[[{"node":"Format Schema","type":"main","index":0}]]},"Need Schema?":{"main":[[{"node":"Fetch Schema","type":"main","index":0}],[{"node":"Empty Schema","type":"main","index":0}]]},"Format Schema":{"main":[[{"node":"Unified Analytics Agent","type":"main","index":0}]]},"Manual Trigger":{"main":[[{"node":"⚙️ Config (Sync)","type":"main","index":0}]]},"Truncate Table":{"main":[[{"node":"Fetch Google Sheet","type":"main","index":0}]]},"Execute SQL Query":{"ai_tool":[[{"node":"Unified Analytics Agent","type":"ai_tool","index":0}]]},"Manage Table Name":{"main":[[{"node":"Need Schema?","type":"main","index":0}]]},"Fetch Google Sheet":{"main":[[{"node":"Insert Rows to Postgres","type":"main","index":0}]]},"OpenAI GPT-4o-mini":{"ai_languageModel":[[{"node":"Unified Analytics Agent","type":"ai_languageModel","index":0}]]},"⚙️ Config (Sync)":{"main":[[{"node":"Truncate Table","type":"main","index":0}]]}}},"lastUpdatedBy":1,"workflowInfo":{"nodeCount":22,"nodeTypes":{"n8n-nodes-base.if":{"count":1},"n8n-nodes-base.set":{"count":2},"n8n-nodes-base.code":{"count":2},"n8n-nodes-base.postgres":{"count":3},"n8n-nodes-base.stickyNote":{"count":6},"n8n-nodes-base.googleSheets":{"count":1},"n8n-nodes-base.postgresTool":{"count":1},"n8n-nodes-base.manualTrigger":{"count":1},"n8n-nodes-base.quickChartTool":{"count":1},"@n8n/n8n-nodes-langchain.agent":{"count":1},"@n8n/n8n-nodes-langchain.chatTrigger":{"count":1},"@n8n/n8n-nodes-langchain.lmChatOpenAi":{"count":1},"@n8n/n8n-nodes-langchain.memoryPostgresChat":{"count":1}}},"status":"published","readyToDemo":null,"user":{"name":"Bhautik 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