diff --git a/parser/sql/dialect/opengauss/src/main/antlr4/imports/opengauss/BaseRule.g4 b/parser/sql/dialect/opengauss/src/main/antlr4/imports/opengauss/BaseRule.g4
index abf4c2e63d310..610ebdda0be74 100644
--- a/parser/sql/dialect/opengauss/src/main/antlr4/imports/opengauss/BaseRule.g4
+++ b/parser/sql/dialect/opengauss/src/main/antlr4/imports/opengauss/BaseRule.g4
@@ -329,6 +329,7 @@ unreservedWord
     | PROCEDURES
     | PROGRAM
     | PUBLICATION
+    | QUARTER
     | QUOTE
     | RANGE
     | READ
@@ -427,6 +428,7 @@ unreservedWord
     | VIEW
     | VIEWS
     | VOLATILE
+    | WEEK
     | WHITESPACE
     | WITHIN
     | WITHOUT
@@ -1147,7 +1149,9 @@ extractList
 
 extractArg
     : YEAR
+    | QUARTER
     | MONTH
+    | WEEK
     | DAY
     | HOUR
     | MINUTE
diff --git a/parser/sql/dialect/postgresql/src/main/antlr4/imports/postgresql/BaseRule.g4 b/parser/sql/dialect/postgresql/src/main/antlr4/imports/postgresql/BaseRule.g4
index 751ca07f4e0f2..4a1910c3b99f4 100644
--- a/parser/sql/dialect/postgresql/src/main/antlr4/imports/postgresql/BaseRule.g4
+++ b/parser/sql/dialect/postgresql/src/main/antlr4/imports/postgresql/BaseRule.g4
@@ -330,6 +330,7 @@ unreservedWord
     | PROCEDURES
     | PROGRAM
     | PUBLICATION
+    | QUARTER
     | QUOTE
     | RANGE
     | READ
@@ -428,6 +429,7 @@ unreservedWord
     | VIEW
     | VIEWS
     | VOLATILE
+    | WEEK
     | WHITESPACE
     | WITHIN
     | WITHOUT
@@ -1114,7 +1116,9 @@ extractList
 
 extractArg
     : YEAR
+    | QUARTER
     | MONTH
+    | WEEK
     | DAY
     | HOUR
     | MINUTE
diff --git a/test/it/parser/src/main/resources/case/dml/select-special-function.xml b/test/it/parser/src/main/resources/case/dml/select-special-function.xml
index 696568f2e0828..6712182134b86 100644
--- a/test/it/parser/src/main/resources/case/dml/select-special-function.xml
+++ b/test/it/parser/src/main/resources/case/dml/select-special-function.xml
@@ -440,6 +440,50 @@
         </projections>
     </select>
 
+    <select sql-case-id="select_extract_function_week">
+        <projections start-index="7" stop-index="56">
+            <expression-projection text="EXTRACT(WEEK FROM TIMESTAMP '2001-02-16 20:38:40')" start-index="7" stop-index="56">
+                <expr>
+                    <function function-name="EXTRACT" start-index="7" stop-index="56" text="EXTRACT(WEEK FROM TIMESTAMP '2001-02-16 20:38:40')">
+                        <parameter>
+                            <extract-arg start-index="15" stop-index="18" text="WEEK" />
+                        </parameter>
+                        <parameter>
+                            <type-cast-expression>
+                                <expression>
+                                    <literal-expression value="2001-02-16 20:38:40" start-index="35" stop-index="55" />
+                                </expression>
+                                <data-type>TIMESTAMP</data-type>
+                            </type-cast-expression>
+                        </parameter>
+                    </function>
+                </expr>
+            </expression-projection>
+        </projections>
+    </select>
+
+    <select sql-case-id="select_extract_function_quarter">
+        <projections start-index="7" stop-index="59">
+            <expression-projection text="EXTRACT(QUARTER FROM TIMESTAMP '2001-02-16 20:38:40')" start-index="7" stop-index="59">
+                <expr>
+                    <function function-name="EXTRACT" start-index="7" stop-index="59" text="EXTRACT(QUARTER FROM TIMESTAMP '2001-02-16 20:38:40')">
+                        <parameter>
+                            <extract-arg start-index="15" stop-index="21" text="QUARTER" />
+                        </parameter>
+                        <parameter>
+                            <type-cast-expression>
+                                <expression>
+                                    <literal-expression value="2001-02-16 20:38:40" start-index="38" stop-index="58" />
+                                </expression>
+                                <data-type>TIMESTAMP</data-type>
+                            </type-cast-expression>
+                        </parameter>
+                    </function>
+                </expr>
+            </expression-projection>
+        </projections>
+    </select>
+
     <select sql-case-id="select_extract_function_for_oracle">
         <projections start-index="7" stop-index="56" literal-start-index="7" literal-stop-index="56">
             <expression-projection text="EXTRACT(YEAR FROM TIMESTAMP '2001-02-16 20:38:40')" start-index="7" stop-index="56" literal-start-index="7" literal-stop-index="56">
diff --git a/test/it/parser/src/main/resources/sql/supported/dml/select-special-function.xml b/test/it/parser/src/main/resources/sql/supported/dml/select-special-function.xml
index 69b828139843d..17a6a5208a8e3 100644
--- a/test/it/parser/src/main/resources/sql/supported/dml/select-special-function.xml
+++ b/test/it/parser/src/main/resources/sql/supported/dml/select-special-function.xml
@@ -40,6 +40,8 @@
     <sql-case id="select_values" value="SELECT VALUES(order_id) FROM t_order" db-types="MySQL" />
     <sql-case id="select_current_user_brackets" value="SELECT CURRENT_USER()" db-types="MySQL" />
     <sql-case id="select_extract_function" value="SELECT EXTRACT(YEAR FROM TIMESTAMP '2001-02-16 20:38:40')" db-types="PostgreSQL,openGauss" />
+    <sql-case id="select_extract_function_week" value="SELECT EXTRACT(WEEK FROM TIMESTAMP '2001-02-16 20:38:40')" db-types="PostgreSQL,openGauss" />
+    <sql-case id="select_extract_function_quarter" value="SELECT EXTRACT(QUARTER FROM TIMESTAMP '2001-02-16 20:38:40')" db-types="PostgreSQL,openGauss" />
     <sql-case id="select_extract_function_for_oracle" value="SELECT EXTRACT(YEAR FROM TIMESTAMP '2001-02-16 20:38:40') FROM DUAL" db-types="Oracle" />
     <sql-case id="select_mod_function" value="SELECT MOD(order_id, 1) from t_order" db-types="PostgreSQL,openGauss" />
     <sql-case id="select_sys_xml_agg" value="SELECT SYS_XMLAGG(SYS_XMLGEN(last_name)) XMLAGG FROM employees WHERE last_name LIKE 'R%' ORDER BY xmlagg;" db-types="Oracle" />
diff --git a/test/it/parser/src/main/resources/sql/unsupported/unsupported.xml b/test/it/parser/src/main/resources/sql/unsupported/unsupported.xml
index d9f55d822d7ba..adfbcb535a9b6 100644
--- a/test/it/parser/src/main/resources/sql/unsupported/unsupported.xml
+++ b/test/it/parser/src/main/resources/sql/unsupported/unsupported.xml
@@ -262,8 +262,6 @@
     <sql-case id="unsupported_select_case_for_opengauss_438" value="select B'101' | as result;" db-types="openGauss" />
     <sql-case id="unsupported_select_case_for_opengauss_439" value="select B'101' # as result;" db-types="openGauss" />
     <sql-case id="unsupported_select_case_for_opengauss_440" value="select B'11110' # B'0000';" db-types="openGauss" />
-    <sql-case id="unsupported_select_case_for_opengauss_443" value="select extract(quarter from timestamp '2001-02-16 20:38:40') from sys_dummy;" db-types="openGauss" />
-    <sql-case id="unsupported_select_case_for_opengauss_444" value="select extract(week from timestamp '2001-02-16 20:38:40') from sys_dummy;" db-types="openGauss" />
     <sql-case id="unsupported_select_case_for_opengauss_447" value="select atan(11 11) from sys_dummy;" db-types="openGauss" />
     <sql-case id="unsupported_select_case_for_opengauss_448" value="select atan(,) from sys_dummy;" db-types="openGauss" />
     <sql-case id="unsupported_select_case_for_opengauss_451" value="select $$the lexeme '    '  , contains spaces$$::tsvector@@ ','::tsquery  as result;" db-types="openGauss" />