diff --git a/doc/sql.extensions/README.ddl.txt b/doc/sql.extensions/README.ddl.txt
index d508aacaf7..19ca28c3c8 100644
--- a/doc/sql.extensions/README.ddl.txt
+++ b/doc/sql.extensions/README.ddl.txt
@@ -709,3 +709,12 @@ CREATE PACKAGE BODY [IF NOT EXISTS] ...
 CREATE [GLOBAL] MAPPING [IF NOT EXISTS] ...
 ALTER TABLE <table> ADD [IF NOT EXISTS] <column name> ...
 ALTER TABLE <table> ADD CONSTRAINT [IF NOT EXISTS] <constraint name> ...
+
+3) Creation of an inactive index
+
+CREATE [UNIQUE] [ASC[ENDING] | DESC[ENDING]]
+  INDEX indexname [{ACTIVE | INACTIVE}]
+  ON tablename {(col [, col ...]) | COMPUTED BY (<expression>)}
+  [WHERE <search_condition>] 
+
+'isql -x' generates script accordingly.
diff --git a/src/dsql/DdlNodes.epp b/src/dsql/DdlNodes.epp
index 688d54ab0c..0fa5cce0bb 100644
--- a/src/dsql/DdlNodes.epp
+++ b/src/dsql/DdlNodes.epp
@@ -10062,7 +10062,7 @@ void CreateIndexNode::execute(thread_db* tdbb, DsqlCompilerScratch* dsqlScratch,
 	definition.relation = relation->dsqlName;
 	definition.unique = unique;
 	definition.descending = descending;
-	definition.inactive = false;
+	definition.inactive = !active;
 
 	if (columns)
 	{
diff --git a/src/dsql/DdlNodes.h b/src/dsql/DdlNodes.h
index 554a39ca35..aec9dfdb48 100644
--- a/src/dsql/DdlNodes.h
+++ b/src/dsql/DdlNodes.h
@@ -1790,6 +1790,7 @@ public:
 	MetaName name;
 	bool unique;
 	bool descending;
+	bool active;
 	NestConst<RelationSourceNode> relation;
 	NestConst<ValueListNode> columns;
 	NestConst<ValueSourceClause> computed;
diff --git a/src/dsql/parse.y b/src/dsql/parse.y
index 2eac7d7031..a299f9c4b0 100644
--- a/src/dsql/parse.y
+++ b/src/dsql/parse.y
@@ -1546,18 +1546,19 @@ create_clause
 			node->createIfNotExistsOnly = $2;
 			$$ = node;
 		}
-	| unique_opt order_direction INDEX if_not_exists_opt symbol_index_name ON simple_table_name
+	| unique_opt order_direction INDEX if_not_exists_opt symbol_index_name index_active_opt ON simple_table_name
 			{
 				const auto node = newNode<CreateIndexNode>(*$5);
+				node->active = $6;
 				node->unique = $1;
 				node->descending = $2;
 				node->createIfNotExistsOnly = $4;
-				node->relation = $7;
+				node->relation = $8;
 				$$ = node;
 			}
-		index_definition(static_cast<CreateIndexNode*>($8))
+		index_definition(static_cast<CreateIndexNode*>($9))
 			{
-				$$ = $8;
+				$$ = $9;
 			}
 	| FUNCTION if_not_exists_opt function_clause
 		{
@@ -1753,6 +1754,12 @@ alter_exception_clause
 
 // CREATE INDEX
 
+%type <boolVal> index_active_opt
+index_active_opt
+	: /* nothing */		{ $$ = true; }
+	| index_active		{ $$ = $1; }
+	;
+
 %type <boolVal> unique_opt
 unique_opt
 	: /* nothing */		{ $$ = false; }
@@ -4676,8 +4683,16 @@ drop_behaviour
 
 %type <ddlNode>	alter_index_clause
 alter_index_clause
-	: symbol_index_name ACTIVE		{ $$ = newNode<AlterIndexNode>(*$1, true); }
-	| symbol_index_name INACTIVE	{ $$ = newNode<AlterIndexNode>(*$1, false); }
+	: symbol_index_name index_active
+		{
+			$$ = newNode<AlterIndexNode>(*$1, $2);
+		}
+	;
+
+%type <boolVal> index_active
+index_active
+	: ACTIVE	{ $$ = true; }
+	| INACTIVE	{ $$ = false; }
 	;
 
 %type <ddlNode>	alter_udf_clause
diff --git a/src/isql/extract.epp b/src/isql/extract.epp
index d1aa3b2db4..c281cae6b8 100644
--- a/src/isql/extract.epp
+++ b/src/isql/extract.epp
@@ -3337,17 +3337,19 @@ static void list_indexes()
 		{
 			IUTILS_copy_SQL_id (IDX.RDB$INDEX_NAME,    SQL_identifier,  DBL_QUOTE);
 			IUTILS_copy_SQL_id (IDX.RDB$RELATION_NAME, SQL_identifier2, DBL_QUOTE);
-			isqlGlob.printf("CREATE%s%s INDEX %s ON %s",
+			isqlGlob.printf("CREATE%s%s INDEX %s%s ON %s",
 					(IDX.RDB$UNIQUE_FLAG ? " UNIQUE" : ""),
 					(IDX.RDB$INDEX_TYPE ? " DESCENDING" : ""),
 					SQL_identifier,
+					(IDX.RDB$INDEX_INACTIVE ? " INACTIVE" : ""),
 					SQL_identifier2);
 		}
 		else
-			isqlGlob.printf("CREATE%s%s INDEX %s ON %s",
+			isqlGlob.printf("CREATE%s%s INDEX %s%s ON %s",
 					(IDX.RDB$UNIQUE_FLAG ? " UNIQUE" : ""),
 					(IDX.RDB$INDEX_TYPE ? " DESCENDING" : ""),
 					IDX.RDB$INDEX_NAME,
+					(IDX.RDB$INDEX_INACTIVE ? " INACTIVE" : ""),
 					IDX.RDB$RELATION_NAME);
 
 		// Get index expression or column names