Add session_level_commands example

examples/session_level_commands.ts

@@ -0,0 +1,36 @@
+import { createClient } from '@clickhouse/client' // or '@clickhouse/client-web'
+import * as crypto from 'crypto' // required for Node.js only
+
+void (async () => {
+  const client = createClient({
+    // with session_id defined, SET and other session commands
+    // will affect all the consecutive queries
+    session_id: crypto.randomUUID(),
+  })
+
+  await client.command({
+    query: `SET output_format_json_quote_64bit_integers = 0`,
+    clickhouse_settings: { wait_end_of_query: 1 },
+  })
+
+  // this query uses output_format_json_quote_64bit_integers = 0
+  const rows1 = await client.query({
+    query: `SELECT toInt64(42)`,
+    format: 'JSONEachRow',
+  })
+  console.log(await rows1.json())
+
+  await client.command({
+    query: `SET output_format_json_quote_64bit_integers = 1`,
+    clickhouse_settings: { wait_end_of_query: 1 },
+  })
+
+  // this query uses output_format_json_quote_64bit_integers = 1
+  const rows2 = await client.query({
+    query: `SELECT toInt64(144)`,
+    format: 'JSONEachRow',
+  })
+  console.log(await rows2.json())
+
+  await client.close()
+})()