[typo](docs)Optimized date function doc order and add partial function doc

docs/en/docs/sql-manual/sql-functions/date-time-functions/days_diff.md

@@ -0,0 +1,48 @@
+---
+{
+    "title": "days_diff",
+    "language": "en"
+}
+---
+
+<!-- 
+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.
+-->
+
+## days_diff
+### description
+#### Syntax
+
+`INT days_diff(DATETIME enddate, DATETIME startdate)`
+
+The difference between the start time and the end time is a few days
+
+### example
+
+```
+mysql> select days_diff('2020-12-25 22:00:00','2020-12-24 22:00:00');
++---------------------------------------------------------+
+| days_diff('2020-12-25 22:00:00', '2020-12-24 22:00:00') |
++---------------------------------------------------------+
+|                                                       1 |
++---------------------------------------------------------+
+```
+
+### keywords
+
+    days_diff

docs/en/docs/sql-manual/sql-functions/date-time-functions/extract.md

@@ -0,0 +1,53 @@
+---
+{
+    "title": "extract",
+    "language": "en"
+}
+---
+
+<!--
+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.
+-->
+
+## extract
+### description
+#### Syntax
+
+`INT extract(unit FROM DATETIME)`
+
+Extract DATETIME The value of a specified unit. The unit can be year, day, hour, minute, or second
+
+### Example
+
+```
+mysql> select extract(year from '2022-09-22 17:01:30') as year,
+    -> extract(month from '2022-09-22 17:01:30') as month,
+    -> extract(day from '2022-09-22 17:01:30') as day,
+    -> extract(hour from '2022-09-22 17:01:30') as hour,
+    -> extract(minute from '2022-09-22 17:01:30') as minute,
+    -> extract(second from '2022-09-22 17:01:30') as second;
++------+-------+------+------+--------+--------+
+| year | month | day  | hour | minute | second |
++------+-------+------+------+--------+--------+
+| 2022 |     9 |   22 |   17 |      1 |     30 |
++------+-------+------+------+--------+--------+
+```
+
+### keywords
+
+    extract

docs/en/docs/sql-manual/sql-functions/date-time-functions/hours_diff.md

@@ -0,0 +1,48 @@
+---
+{
+    "title": "hours_diff",
+    "language": "en"
+}
+---
+
+<!-- 
+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.
+-->
+
+## hours_diff
+### description
+#### Syntax
+
+`INT hours_diff(DATETIME enddate, DATETIME startdate)`
+
+The difference between the start time and the end time is a few hours
+
+### example
+
+```
+mysql> select hours_diff('2020-12-25 22:00:00','2020-12-25 21:00:00');
++----------------------------------------------------------+
+| hours_diff('2020-12-25 22:00:00', '2020-12-25 21:00:00') |
++----------------------------------------------------------+
+|                                                        1 |
++----------------------------------------------------------+
+```
+
+### keywords
+
+    hours_diff

docs/en/docs/sql-manual/sql-functions/date-time-functions/localtime.md

@@ -0,0 +1,56 @@
+---
+{
+    "title": "localtime,localtimestamp",
+    "language": "en"
+}
+---
+
+<!--
+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.
+-->
+
+## localtime,localtimestamp
+### description
+#### Syntax
+
+`DATETIME localtime()`
+`DATETIME localtimestamp()`
+
+Get the current time and return it in Datetime type.
+
+### Example
+
+```
+mysql> select localtime();
++---------------------+
+| localtime()         |
++---------------------+
+| 2022-09-22 17:30:23 |
++---------------------+
+
+mysql> select localtimestamp();
++---------------------+
+| localtimestamp()    |
++---------------------+
+| 2022-09-22 17:30:29 |
++---------------------+
+```
+
+### keywords
+
+    localtime,localtimestamp

docs/en/docs/sql-manual/sql-functions/date-time-functions/minutes_diff.md

@@ -0,0 +1,48 @@
+---
+{
+    "title": "minutes_diff",
+    "language": "en"
+}
+---
+
+<!-- 
+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.
+-->
+
+## minutes_diff
+### description
+#### Syntax
+
+`INT minutes_diff(DATETIME enddate, DATETIME startdate)`
+
+The difference between the start time and the end time is a few minutes
+
+### example
+
+```
+mysql> select minutes_diff('2020-12-25 22:00:00','2020-12-25 21:00:00');
++------------------------------------------------------------+
+| minutes_diff('2020-12-25 22:00:00', '2020-12-25 21:00:00') |
++------------------------------------------------------------+
+|                                                         60 |
++------------------------------------------------------------+
+```
+
+### keywords
+
+    minutes_diff

docs/en/docs/sql-manual/sql-functions/date-time-functions/months_diff.md

@@ -0,0 +1,48 @@
+---
+{
+    "title": "months_diff",
+    "language": "en"
+}
+---
+
+<!-- 
+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.
+-->
+
+## months_diff
+### description
+#### Syntax
+
+`INT months_diff(DATETIME enddate, DATETIME startdate)`
+
+The difference between the start time and the end time is months
+
+### example
+
+```
+mysql> select months_diff('2020-12-25','2020-10-25');
++-----------------------------------------------------------+
+| months_diff('2020-12-25 00:00:00', '2020-10-25 00:00:00') |
++-----------------------------------------------------------+
+|                                                         2 |
++-----------------------------------------------------------+
+```
+
+### keywords
+
+    months_diff

docs/en/docs/sql-manual/sql-functions/date-time-functions/quarter.md

@@ -0,0 +1,48 @@
+---
+{
+    "title": "quarter",
+    "language": "en"
+}
+---
+
+<!--
+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.
+-->
+
+## quarter
+### description
+#### Syntax
+
+`INT quarter(DATETIME date)`
+
+Returns the quarter to which the specified date belongs, as an INT
+
+### Example
+
+```
+mysql> select quarter('2022-09-22 17:00:00');
++--------------------------------+
+| quarter('2022-09-22 17:00:00') |
++--------------------------------+
+|                              3 |
++--------------------------------+
+```
+
+### keywords
+
+    quarter