diff --git a/docs/sql-ref-syntax-qry-select-groupby.md b/docs/sql-ref-syntax-qry-select-groupby.md
index 2d13c34956..e47ca0bf3c 100644
--- a/docs/sql-ref-syntax-qry-select-groupby.md
+++ b/docs/sql-ref-syntax-qry-select-groupby.md
@@ -44,7 +44,7 @@ GROUP BY [ GROUPING SETS grouping_sets ] group_expression [ , group_expression [
     set is specified by a list of comma-separated expressions in parentheses.<br><br>
     <b>Syntax:</b>
       <code>
-        (() | (expression [ , ...]))
+        ( () | ( expression [ , ... ] ) )
       </code>
   </dd>
   <dt><code><em>grouping_expression</em></code></dt>
diff --git a/docs/sql-ref-syntax-qry-select-having.md b/docs/sql-ref-syntax-qry-select-having.md
index 718c22fd4b..428d8556e7 100644
--- a/docs/sql-ref-syntax-qry-select-having.md
+++ b/docs/sql-ref-syntax-qry-select-having.md
@@ -20,7 +20,7 @@ license: |
 ---
 The <code>HAVING</code> clause is used to filter the results produced by
 <code>GROUP BY</code> based on the specified condition. It is often used
-in the conjunction with a [GROUP BY](sql-ref-syntax-qry-select-groupby.html)
+in conjunction with a [GROUP BY](sql-ref-syntax-qry-select-groupby.html)
 clause.
 
 ### Syntax
@@ -49,7 +49,7 @@ HAVING boolean_expression
 ### Examples
 {% highlight sql %}
 CREATE TABLE dealer (id INT, city STRING, car_model STRING, quantity INT);
-INSERT INTO dealer  VALUES (100, 'Fremont', 'Honda Civic', 10),
+INSERT INTO dealer VALUES (100, 'Fremont', 'Honda Civic', 10),
                           (100, 'Fremont', 'Honda Accord', 15),
                           (100, 'Fremont', 'Honda CRV', 7),
                           (200, 'Dublin', 'Honda Civic', 20),
diff --git a/docs/sql-ref-syntax-qry-select-where.md b/docs/sql-ref-syntax-qry-select-where.md
index 2c8d449172..09fab64bbe 100644
--- a/docs/sql-ref-syntax-qry-select-where.md
+++ b/docs/sql-ref-syntax-qry-select-where.md
@@ -19,7 +19,7 @@ license: |
   limitations under the License.
 ---
 The <code>WHERE</code> clause is used to limit the results of the <code>FROM</code>
-clause of query or subquery based on the specified condition.
+clause of a query or a subquery based on the specified condition.
 
 ### Syntax
 {% highlight sql %}
@@ -62,7 +62,7 @@ SELECT * FROM person WHERE id = 200 OR id = 300 ORDER BY id;
   |300|Mike|80  |
   +---+----+----+
 
--- ISNULL expression in `WHERE` clause.
+-- IS NULL expression in `WHERE` clause.
 SELECT * FROM person WHERE id > 300 OR age IS NULL ORDER BY id;
   +---+----+----+
   |id |name|age |