dataroaring commented on code in PR #13785:
URL: https://github.com/apache/doris/pull/13785#discussion_r1018082451
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docs/zh-CN/docs/sql-manual/sql-functions/aggregate-functions/sequence_count.md:
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@@ -0,0 +1,261 @@
+---
+{
+ "title": "SEQUENCE-COUNT",
+ "language": "zh-CN"
+}
+---
+
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements. See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership. The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+## SEQUENCE-COUNT
+### Description
+#### Syntax
+
+`sequence_count(pattern, timestamp, cond1, cond2, ...);`
+
+计算与模式匹配的事件链的数量。该函数搜索不重叠的事件链。当前链匹配后，它开始搜索下一个链。
+
+**警告!**
+
+在同一秒钟发生的事件可能以未定义的顺序排列在序列中，影响最终结果。
+
+#### Arguments
+
+`pattern` — 模式字符串.
+
+**模式语法**
+
+`(?N)` — 在位置N匹配条件参数。 条件在编号 `[1, 32]` 范围。 例如, `(?1)` 匹配传递给 `cond1` 参数。
+
+`.*` — 匹配任何事件的数字。 不需要条件参数来匹配这个模式。
+
+`(?t operator value)` — 分开两个事件的时间。 我们将时间直接转化为对应的数字来描述时间。
+
+例如
+
+```
+2022-11-02 10:41:00 -> 20221102104100
+2022-11-02 11:41:00 -> 20221102114100
+```
+
+`t`表示为两个时间的直接插值。 例如： `(?1)(?t>1800)(?2)` 匹配彼此发生超过18分钟的事件，
`(?1)(?t>10000)(?2)`匹配彼此发生超过1小时的事件。 这些事件之间可以存在任意数量的任何事件。 您可以使用 `>=`, `>`, `<`,
`<=`, `==` 运算符。
Review Comment:
1800 should be seconds.
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