diff --git a/src/data/sqlGenerator.test.ts b/src/data/sqlGenerator.test.ts
index c2cb9c9c..95793f1c 100644
--- a/src/data/sqlGenerator.test.ts
+++ b/src/data/sqlGenerator.test.ts
@@ -1,4 +1,4 @@
-import { AggregateType, ColumnHint, QueryBuilderOptions, QueryType } from 'types/queryBuilder';
+import { AggregateType, ColumnHint, FilterOperator, QueryBuilderOptions, QueryType } from 'types/queryBuilder';
 import { generateSql, getColumnByHint, getColumnIndexByHint, getColumnsByHints, isAggregateQuery } from './sqlGenerator';
 
 describe('SQL Generator', () => {
@@ -13,11 +13,20 @@ describe('SQL Generator', () => {
           { name: 'message', type: 'String', hint: ColumnHint.LogMessage },
       ],
       limit: 1000,
-      filters: [],
+      filters: [
+        {
+          filterType: 'custom',
+          key: 'message',
+          type: 'String',
+          condition: 'AND',
+          operator: FilterOperator.IsNotNull
+        }
+      ],
       orderBy: []
     };
     const expectedSql = (
-      'SELECT timestamp as timestamp, message as body, level as level FROM "default"."logs" LIMIT 1000'
+      'SELECT timestamp as timestamp, message as body, level as level ' +
+      'FROM "default"."logs" WHERE ( message IS NOT NULL ) LIMIT 1000'
     );
 
     const sql = generateSql(opts);
@@ -41,7 +50,17 @@ describe('SQL Generator', () => {
           { name: 'ResourceAttributes', type: 'Map(LowCardinality(String), String)', hint: ColumnHint.TraceServiceTags },
       ],
       limit: 1000,
-      filters: [],
+      filters: [
+        {
+          filterType: 'custom',
+          key: '', // hint property is used instead of column name
+          type: 'String',
+          condition: 'AND',
+          hint: ColumnHint.TraceId,
+          operator: FilterOperator.Equals,
+          value: '1234'
+        }
+      ],
       orderBy: []
     };
     const expectedSql = (
@@ -49,7 +68,7 @@ describe('SQL Generator', () => {
       '"SpanName" as operationName, "Timestamp" as startTime, "Duration" as duration, ' +
       'arrayMap(key -> map(\'key\', key, \'value\',"SpanAttributes"[key]), mapKeys("SpanAttributes")) as tags, ' +
       'arrayMap(key -> map(\'key\', key, \'value\',"ResourceAttributes"[key]), mapKeys("ResourceAttributes")) as serviceTags ' +
-      'FROM "otel"."otel_traces" ORDER BY startTime ASC LIMIT 1000'
+      'FROM "otel"."otel_traces" WHERE ( TraceId = \'1234\' ) ORDER BY startTime ASC LIMIT 1000'
     );
 
     const sql = generateSql(opts);
@@ -77,6 +96,44 @@ describe('SQL Generator', () => {
     expect(sql).toEqual(expectedSql);
   });
 
+  it('generates other sql with filters', () => {
+    const opts: QueryBuilderOptions = {
+      database: 'default',
+      table: 'data',
+      queryType: QueryType.Table,
+      columns: [
+          { name: 'timestamp', type: 'DateTime' },
+          { name: 'text', type: 'String' },
+      ],
+      limit: 1000,
+      filters: [
+        {
+          operator: FilterOperator.WithInGrafanaTimeRange,
+          filterType: 'custom',
+          key: 'created_at',
+          type: 'datetime',
+          condition: 'AND'
+        },
+        {
+          filterType: 'custom',
+          key: 'event',
+          type: 'String',
+          condition: 'AND',
+          operator: FilterOperator.IsNotNull
+        }
+      ],
+      orderBy: []
+    };
+    const expectedSql = (
+      'SELECT "timestamp", "text" FROM "default"."data" ' +
+      'WHERE   ( created_at  >= $__fromTime AND created_at <= $__toTime ) AND ( event IS NOT NULL ) ' +
+      'LIMIT 1000'
+    );
+
+    const sql = generateSql(opts);
+    expect(sql).toEqual(expectedSql);
+  });
+
   it('excludes LIMIT when limit is 0', () => {
     const opts: QueryBuilderOptions = {
       database: 'default',
diff --git a/src/data/sqlGenerator.ts b/src/data/sqlGenerator.ts
index bb8d0a51..3e655f89 100644
--- a/src/data/sqlGenerator.ts
+++ b/src/data/sqlGenerator.ts
@@ -1,7 +1,6 @@
 import { getSqlFromQueryBuilderOptions, getOrderBy } from 'components/queryBuilder/utils';
 import { BooleanFilter, ColumnHint, DateFilterWithValue, FilterOperator, MultiFilter, NumberFilter, QueryBuilderOptions, QueryType, SelectedColumn, StringFilter, TimeUnit } from 'types/queryBuilder';
 
-
 export const generateSql = (options: QueryBuilderOptions): string => {
   if (options.queryType === QueryType.Traces) {
     return generateTraceQuery(options);
@@ -102,7 +101,7 @@ const generateTraceQuery = (options: QueryBuilderOptions): string => {
     queryParts.push(limit);
   }
 
-  return queryParts.join(' ');
+  return concatQueryParts(queryParts);
 }
 
 /**
@@ -166,7 +165,7 @@ const generateLogsQuery = (options: QueryBuilderOptions): string => {
     queryParts.push(limit);
   }
 
-  return queryParts.join(' ');
+  return concatQueryParts(queryParts);
 }
 
 export const isAggregateQuery = (builder: QueryBuilderOptions): boolean => (builder.aggregates?.length || 0) > 0;
@@ -233,6 +232,27 @@ const getTraceDurationSelectSql = (columnIdentifier: string, timeUnit?: TimeUnit
   }
 }
 
+/**
+ * Concats query parts with no empty spaces.
+ */
+const concatQueryParts = (parts: readonly string[]): string => {
+  let query = '';
+  for (let i = 0; i < parts.length; i++) {
+    const p = parts[i];
+    if (!p) {
+      continue;
+    }
+
+    query += p;
+
+    if (i !== parts.length - 1) {
+      query += ' '
+    }
+  }
+
+  return query;
+}
+
 const getLimit = (limit?: number | undefined): string => {
   limit = Math.max(0, limit || 0);
   if (limit > 0) {
@@ -328,11 +348,11 @@ const getFilters = (options: QueryBuilderOptions): string => {
     }
     filterParts.push(')');
 
-    const builtFilter = filterParts.join(' ');
+    const builtFilter = concatQueryParts(filterParts);
     builtFilters.push(builtFilter);
   }
 
-  return builtFilters.join(' ');
+  return concatQueryParts(builtFilters);
 };
 
 const isBooleanType = (type: string): boolean => (type?.toLowerCase().startsWith('boolean'));