[doc](function)support bit_test function

docs/sql-manual/sql-functions/bitwise-functions/bit_test.md

@@ -0,0 +1,65 @@
+---
+{
+"title": "BIT_TEST",
+"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.
+-->
+
+## bit_test
+### description
+#### Syntax
+
+`bit_test(Integer-type value, Integer-type pos, '......')`
+
+"Convert the value of 'value' into binary form and return the value at the specified position 'pos', where 'pos' starts from 0 and goes from right to left. If there are multiple values for 'pos', combine the values at multiple 'pos' positions using the AND operator and return the final result. 
+If the value of pos is negative or exceeds the total number of bits in value, the result will be 0.
+Integer value ranges: TINYINT, SMALLINT, INT, BIGINT, LARGEINT."
+
+### example
+
+### example
+
+mysql [(none)]>SELECT bit_test(43, 1);
++-----------------+
+| bit_test(43, 1) |
++-----------------+
+|               1 |
++-----------------+
+
+mysql [(none)]>select bit_test(43,-1);
++------------------+
+| bit_test(43, -1) |
++------------------+
+|                0 |
++------------------+
+
+mysql [(none)]>SELECT bit_test(43, 0, 1, 3, 5,2);
++-----------------------------+
+| bit_test(43, 0, 1, 3, 5, 2) |
++-----------------------------+
+|                           0 |
++-----------------------------+
+```
+
+### keywords
+
+    bit_test,bit_test_all

i18n/zh-CN/docusaurus-plugin-content-docs/current/sql-manual/sql-functions/bitwise-functions/bit_test.md

@@ -0,0 +1,64 @@
+---
+{
+"title": "BIT_TEST",
+"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.
+-->
+
+## bit_test
+### description
+#### Syntax
+
+`bit_test(Integer-type value, Integer-type pos, '......')`
+
+将value的值转换为二进制的形式，返回指定位置pos的值，pos从0开始，从右到左。
+如果pos 有多个值，则将多个pos位置上的值用与运算符结合起来，返回最终结果。
+如果pos 的取值为负数或者超过value的bit位总数，则会返回结果为0.
+整数value范围：TINYINT、SMALLINT、INT、BIGINT、LARGEINT
+
+### example
+
+mysql [(none)]>SELECT bit_test(43, 1);
++-----------------+
+| bit_test(43, 1) |
++-----------------+
+|               1 |
++-----------------+
+
+mysql [(none)]>select bit_test(43,-1);
++------------------+
+| bit_test(43, -1) |
++------------------+
+|                0 |
++------------------+
+
+mysql [(none)]>SELECT bit_test(43, 0, 1, 3, 5,2);
++-----------------------------+
+| bit_test(43, 0, 1, 3, 5, 2) |
++-----------------------------+
+|                           0 |
++-----------------------------+
+```
+
+### keywords
+
+    bit_test,bit_test_all

sidebars.json

@@ -1063,6 +1063,7 @@
                             "label": "Bitwise Functions",
                             "items": [
                                 "sql-manual/sql-functions/bitwise-functions/bitand",
+                                "sql-manual/sql-functions/bitwise-functions/bit_test",
                                 "sql-manual/sql-functions/bitwise-functions/bitor",
                                 "sql-manual/sql-functions/bitwise-functions/bitxor",
                                 "sql-manual/sql-functions/bitwise-functions/bitnot",