Address feedback

src/backend/distributed/Makefile

@@ -55,7 +55,6 @@ $(EXTENSION)--5.2-1.sql: $(EXTENSION)--5.1-8.sql $(EXTENSION)--5.1-8--5.2-1.sql
 $(EXTENSION)--5.2-2.sql: $(EXTENSION)--5.2-1.sql $(EXTENSION)--5.2-1--5.2-2.sql
 	cat $^ > $@
 
-
 NO_PGXS = 1
 
 SHLIB_LINK = $(libpq)

src/backend/distributed/citus--5.2-1--5.2-2.sql

@@ -9,15 +9,18 @@ DECLARE
 BEGIN
 	SELECT partmethod INTO partitionType
 	FROM pg_dist_partition WHERE logicalrelid = TG_RELID;
-	IF FOUND THEN
+	IF NOT FOUND THEN
+		RETURN NEW;
+	END IF;
+	
 	IF (partitionType = 'a') THEN
 		PERFORM master_drop_all_shards(TG_RELID, TG_TABLE_SCHEMA, TG_TABLE_NAME);
 	ELSE
-			SELECT format('truncate table %s.%s', TG_TABLE_SCHEMA, TG_TABLE_NAME)
+		SELECT format('TRUNCATE TABLE %I.%I CASCADE', TG_TABLE_SCHEMA, TG_TABLE_NAME)
 		INTO commandText;
 		PERFORM master_modify_multiple_shards(commandText);
 	END IF;
-	END IF;
+
 	RETURN NEW;
 END;
 $cdbtt$;

src/backend/distributed/commands/create_distributed_table.c

@@ -54,8 +54,7 @@ static void RecordDistributedRelationDependencies(Oid distributedRelationId,
 static Oid SupportFunctionForColumn(Var *partitionColumn, Oid accessMethodId,
 									int16 supportFunctionNumber);
 static bool LocalTableEmpty(Oid tableId);
-static void CreateTruncateTrigger(Oid relationId, char *qualifiedRelationName);
+static void CreateTruncateTrigger(Oid relationId);
-
 
 /* exports for SQL callable functions */
 PG_FUNCTION_INFO_V1(master_create_distributed_table);
@@ -82,9 +81,6 @@ master_create_distributed_table(PG_FUNCTION_ARGS)
 	Relation distributedRelation = NULL;
 	TupleDesc relationDesc = NULL;
 	char *distributedRelationName = NULL;
-	Oid distributedRelationSchemaOid = InvalidOid;
-	char *distributedRelationSchema = NULL;
-	char *qualifiedRelationName = NULL;
 	char relationKind = '\0';
 
 	Relation pgDistPartition = NULL;
@@ -109,11 +105,6 @@ master_create_distributed_table(PG_FUNCTION_ARGS)
 	distributedRelation = relation_open(distributedRelationId, AccessExclusiveLock);
 	relationDesc = RelationGetDescr(distributedRelation);
 	distributedRelationName = RelationGetRelationName(distributedRelation);
-	distributedRelationSchemaOid = RelationGetNamespace(distributedRelation);
-	distributedRelationSchema = get_namespace_name(distributedRelationSchemaOid);
-
-	qualifiedRelationName = quote_qualified_identifier(distributedRelationSchema,
-													   distributedRelationName);
 
 	EnsureTableOwner(distributedRelationId);
 
@@ -315,7 +306,7 @@ master_create_distributed_table(PG_FUNCTION_ARGS)
 	 */
 	if (relationKind == RELKIND_RELATION)
 	{
-		CreateTruncateTrigger(distributedRelationId, qualifiedRelationName);
+		CreateTruncateTrigger(distributedRelationId);
 	}
 
 	PG_RETURN_VOID();
@@ -498,18 +489,18 @@ LocalTableEmpty(Oid tableId)
 }
 
 
-/* CreateTruncateTrigger creates a truncate trigger on table identified by relationId
+/*
- * and assigns citus_truncate_trigger() as handler. The new trigger is named as
+ * CreateTruncateTrigger creates a truncate trigger on table identified by relationId
- * citus_truncate_trigger_on_ + schemaName.tableName. Trigger name for relation my_table
+ * and assigns citus_truncate_trigger() as handler.
- * from schema my_schema will be citus_truncate_trigger_on_my_schema.my_table to prevent
- * name conflicts.
  */
 static void
-CreateTruncateTrigger(Oid relationId, char *qualifiedRelationName)
+CreateTruncateTrigger(Oid relationId)
 {
 	CreateTrigStmt *trigger = NULL;
 	StringInfo triggerName = makeStringInfo();
-	appendStringInfo(triggerName, "citus_truncate_trigger_on_%s", qualifiedRelationName);
+	bool internal = true;
+
+	appendStringInfo(triggerName, "truncate_trigger");
 
 	trigger = makeNode(CreateTrigStmt);
 	trigger->trigname = triggerName->data;
@@ -523,5 +514,6 @@ CreateTruncateTrigger(Oid relationId, char *qualifiedRelationName)
 	trigger->whenClause = NULL;
 	trigger->isconstraint = false;
 
-	CreateTrigger(trigger, NULL, relationId, InvalidOid, InvalidOid, InvalidOid, false);
+	CreateTrigger(trigger, NULL, relationId, InvalidOid, InvalidOid, InvalidOid,
+				  internal);
 }

src/backend/distributed/master/master_modify_multiple_shards.c

@@ -61,8 +61,6 @@ static int SendQueryToShards(Query *query, List *shardIntervalList, Oid relation
 static int SendQueryToPlacements(char *shardQueryString,
 								 ShardConnections *shardConnections,
 								 bool returnTupleCount);
-static void deparse_truncate_query(Query *query, Oid distrelid, int64 shardid, StringInfo
-								   buffer);
 
 PG_FUNCTION_INFO_V1(master_modify_multiple_shards);
 
@@ -91,7 +89,6 @@ master_modify_multiple_shards(PG_FUNCTION_ARGS)
 	List *shardIntervalList = NIL;
 	List *prunedShardIntervalList = NIL;
 	int32 affectedTupleCount = 0;
-	bool validateModifyQuery = true;
 
 	PreventTransactionChain(isTopLevel, "master_modify_multiple_shards");
 
@@ -124,8 +121,14 @@ master_modify_multiple_shards(PG_FUNCTION_ARGS)
 
 		rangeVar = (RangeVar *) linitial(relationList);
 		relationId = RangeVarGetRelid(rangeVar, NoLock, failOK);
+		if (rangeVar->schemaname == NULL)
+		{
+			Oid schemaOid = get_rel_namespace(relationId);
+			char *schemaName = get_namespace_name(schemaOid);
+			rangeVar->schemaname = schemaName;
+		}
+
 		EnsureTablePermissions(relationId, ACL_TRUNCATE);
-		validateModifyQuery = false;
 	}
 	else
 	{
@@ -138,7 +141,7 @@ master_modify_multiple_shards(PG_FUNCTION_ARGS)
 	queryTreeList = pg_analyze_and_rewrite(queryTreeNode, queryString, NULL, 0);
 	modifyQuery = (Query *) linitial(queryTreeList);
 
-	if (validateModifyQuery)
+	if (modifyQuery->commandType != CMD_UTILITY)
 	{
 		ErrorIfModifyQueryNotSupported(modifyQuery);
 	}
@@ -267,14 +270,7 @@ SendQueryToShards(Query *query, List *shardIntervalList, Oid relationId)
 		shardConnections = GetShardConnections(shardId, &shardConnectionsFound);
 		Assert(shardConnectionsFound);
 
-		if (truncateCommand)
-		{
-			deparse_truncate_query(query, relationId, shardId, shardQueryString);
-		}
-		else
-		{
 		deparse_shard_query(query, relationId, shardId, shardQueryString);
-		}
 
 		shardQueryStringData = shardQueryString->data;
 		shardAffectedTupleCount = SendQueryToPlacements(shardQueryStringData,
@@ -290,33 +286,6 @@ SendQueryToShards(Query *query, List *shardIntervalList, Oid relationId)
 }
 
 
-/*
- * deparse_truncate_query creates sql representation of a truncate statement. The
- * function only generated basic truncate statement of the form
- * 'truncate table <table_name>' it ignores all options. It also assumes that
- * there is only one relation in the relation list.
- */
-void
-deparse_truncate_query(Query *query, Oid distrelid, int64 shardid, StringInfo buffer)
-{
-	TruncateStmt *truncateStatement = NULL;
-	RangeVar *relation = NULL;
-	char *qualifiedName = NULL;
-
-	Assert(query->commandType == CMD_UTILITY);
-	Assert(IsA(query->utilityStmt, TruncateStmt));
-
-	truncateStatement = (TruncateStmt *) query->utilityStmt;
-
-	Assert(list_length(truncateStatement->relations) == 1);
-
-	relation = (RangeVar *) linitial(truncateStatement->relations);
-	qualifiedName = quote_qualified_identifier(relation->schemaname,
-											   relation->relname);
-	appendStringInfo(buffer, "TRUNCATE TABLE %s_" UINT64_FORMAT, qualifiedName, shardid);
-}
-
-
 /*
  * SendQueryToPlacements sends the given query string to all given placement
  * connections of a shard. CommitRemoteTransactions or AbortRemoteTransactions

src/backend/distributed/utils/ruleutils_95.c

@@ -3398,6 +3398,42 @@ get_utility_query_def(Query *query, deparse_context *context)
 			simple_quote_literal(buf, stmt->payload);
 		}
 	}
+	else if (query->utilityStmt && IsA(query->utilityStmt, TruncateStmt))
+	{
+		TruncateStmt *stmt = (TruncateStmt *) query->utilityStmt;
+		List *relationList = stmt->relations;
+		ListCell *relationCell = NULL;
+
+		appendContextKeyword(context, "",
+							 0, PRETTYINDENT_STD, 1);
+
+		appendStringInfo(buf, "TRUNCATE TABLE");
+
+		foreach(relationCell, relationList)
+		{
+			RangeVar *relationVar = (RangeVar *) lfirst(relationCell);
+			Oid relationId = RangeVarGetRelid(relationVar, NoLock, false);
+			char *relationName = generate_relation_or_shard_name(relationId,
+																 context->distrelid,
+																 context->shardid, NIL);
+			appendStringInfo(buf, " %s", relationName);
+
+			if (lnext(relationCell) != NULL)
+			{
+				appendStringInfo(buf, ",");
+			}
+		}
+
+		if (stmt->restart_seqs)
+		{
+			appendStringInfo(buf, " RESTART IDENTITY");
+		}
+
+		if (stmt->behavior == DROP_CASCADE)
+		{
+			appendStringInfo(buf, " CASCADE");
+		}
+	}
 	else
 	{
 		/* Currently only NOTIFY utility commands can appear in rules */

src/test/regress/expected/multi_modifying_xacts.out

@@ -172,8 +172,6 @@ COMMIT;
 --------+--------+-----------
  id     | bigint | not null
  name   | text   | not null
-Triggers:
-    "citus_truncate_trigger_on_public.labs" BEFORE TRUNCATE ON labs FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 SELECT * FROM labs WHERE id = 6;
  id | name 
@@ -225,8 +223,6 @@ COMMIT;
 --------+--------+-----------
  id     | bigint | not null
  name   | text   | not null
-Triggers:
-    "citus_truncate_trigger_on_public.labs" BEFORE TRUNCATE ON labs FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 SELECT * FROM labs WHERE id = 12;
  id | name 
@@ -246,8 +242,6 @@ COMMIT;
 --------+--------+-----------
  id     | bigint | not null
  name   | text   | not null
-Triggers:
-    "citus_truncate_trigger_on_public.labs" BEFORE TRUNCATE ON labs FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 SELECT * FROM labs WHERE id = 12;
  id |   name   

src/test/regress/expected/multi_schema_support.out

@@ -572,8 +572,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
  new_col     | integer                | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON test_schema_support.nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -601,8 +599,6 @@ ALTER TABLE test_schema_support.nation_hash DROP COLUMN IF EXISTS new_col;
  n_name      | character(25)          | not null
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON test_schema_support.nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -630,8 +626,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
  new_col     | integer                | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -660,8 +654,6 @@ ALTER TABLE nation_hash DROP COLUMN IF EXISTS new_col;
  n_name      | character(25)          | not null
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -691,8 +683,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_comment   | character varying(152) | 
 Indexes:
     "index1" btree (n_name)
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON test_schema_support.nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -720,8 +710,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_name      | character(25)          | not null
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON test_schema_support.nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -751,8 +739,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_comment   | character varying(152) | 
 Indexes:
     "index1" btree (n_name)
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;
@@ -781,8 +767,6 @@ HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_sh
  n_name      | character(25)          | not null
  n_regionkey | integer                | not null
  n_comment   | character varying(152) | 
-Triggers:
-    "citus_truncate_trigger_on_test_schema_support.nation_hash" BEFORE TRUNCATE ON nation_hash FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 \c - - - :worker_1_port
 \d test_schema_support.nation_hash_1190003;

src/test/regress/expected/multi_truncate.out

@@ -68,6 +68,11 @@ SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_append'::r
 ---------
 (0 rows)
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_append; COMMIT;
+ERROR:  DROP distributed table cannot run inside a transaction block
+CONTEXT:  SQL statement "SELECT master_drop_all_shards(TG_RELID, TG_TABLE_SCHEMA, TG_TABLE_NAME)"
+PL/pgSQL function citus_truncate_trigger() line 13 at PERFORM
 DROP TABLE test_truncate_append;
 --
 -- truncate for range distribution
@@ -133,6 +138,11 @@ SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_range'::re
  1210005
 (3 rows)
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_range; COMMIT;
+ERROR:  master_modify_multiple_shards cannot run inside a transaction block
+CONTEXT:  SQL statement "SELECT master_modify_multiple_shards(commandText)"
+PL/pgSQL function citus_truncate_trigger() line 17 at PERFORM
 DROP TABLE test_truncate_range;
 --
 -- truncate for hash distribution.
@@ -216,4 +226,9 @@ SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_hash'::reg
  1210009
 (4 rows)
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_hash; COMMIT;
+ERROR:  master_modify_multiple_shards cannot run inside a transaction block
+CONTEXT:  SQL statement "SELECT master_modify_multiple_shards(commandText)"
+PL/pgSQL function citus_truncate_trigger() line 17 at PERFORM
 DROP TABLE test_truncate_hash;

src/test/regress/output/multi_alter_table_statements.source

@@ -103,8 +103,6 @@ ORDER BY attnum;
  int_column1     | integer               | default 1
  int_column2     | integer               | default 2
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 SELECT float_column, count(*) FROM lineitem_alter GROUP BY float_column;
  float_column | count 
@@ -166,8 +164,6 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 SET NOT NULL;
  int_column1     | integer               | 
  int_column2     | integer               | not null default 2
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 -- Drop default so that NULLs will be inserted for this column
 ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP DEFAULT;
@@ -203,8 +199,6 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP NOT NULL;
  int_column1     | integer               | 
  int_column2     | integer               | 
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 -- \copy should succeed now 
 \copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
@@ -248,8 +242,6 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 SET DATA TYPE FLOAT;
  int_column1     | integer               | 
  int_column2     | double precision      | 
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 SELECT int_column2, pg_typeof(int_column2), count(*) from lineitem_alter GROUP BY int_column2;
  int_column2 |    pg_typeof     | count 
@@ -296,8 +288,6 @@ ALTER TABLE lineitem_alter DROP COLUMN IF EXISTS int_column2;
  l_shipmode      | character(10)         | not null
  l_comment       | character varying(44) | not null
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 -- Verify that we can execute commands with multiple subcommands
 ALTER TABLE lineitem_alter ADD COLUMN int_column1 INTEGER,
@@ -325,8 +315,6 @@ ALTER TABLE lineitem_alter ADD COLUMN int_column1 INTEGER,
  null_column     | integer               | 
  int_column1     | integer               | 
  int_column2     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 ALTER TABLE lineitem_alter ADD COLUMN int_column3 INTEGER,
 	ALTER COLUMN int_column1 SET STATISTICS 10;
@@ -354,8 +342,6 @@ ALTER TABLE lineitem_alter DROP COLUMN int_column1, DROP COLUMN int_column2;
  l_shipmode      | character(10)         | not null
  l_comment       | character varying(44) | not null
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 -- Verify that we cannot execute alter commands on the distribution column
 ALTER TABLE lineitem_alter ALTER COLUMN l_orderkey DROP NOT NULL;
@@ -425,8 +411,6 @@ ERROR:  renaming distributed tables or their objects is currently unsupported
  l_shipmode      | character(10)         | not null
  l_comment       | character varying(44) | not null
  null_column     | integer               | 
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 -- verify that non-propagated ddl commands are allowed inside a transaction block
 SET citus.enable_ddl_propagation to false;
@@ -481,8 +465,6 @@ COMMIT;
  first           | integer               | 
 Indexes:
     "temp_index_2" btree (l_orderkey)
-Triggers:
-    "citus_truncate_trigger_on_public.lineitem_alter" BEFORE TRUNCATE ON lineitem_alter FOR EACH STATEMENT EXECUTE PROCEDURE citus_truncate_trigger()
 
 ALTER TABLE lineitem_alter DROP COLUMN first;
 DROP INDEX temp_index_2;

src/test/regress/sql/multi_truncate.sql

@@ -41,6 +41,9 @@ SELECT count(*) FROM test_truncate_append;
 -- verify no shard exists anymore
 SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_append'::regclass;
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_append; COMMIT;
+
 DROP TABLE test_truncate_append;
 
 --
@@ -86,6 +89,9 @@ SELECT count(*) FROM test_truncate_range;
 -- verify 3 shards are still present
 SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_range'::regclass;
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_range; COMMIT;
+
 DROP TABLE test_truncate_range;
 
 
@@ -130,4 +136,7 @@ SELECT count(*) FROM test_truncate_hash;
 -- verify 4 shards are still presents
 SELECT shardid FROM pg_dist_shard where logicalrelid = 'test_truncate_hash'::regclass;
 
+-- command can not be run inside transaction
+BEGIN; TRUNCATE TABLE test_truncate_hash; COMMIT;
+
 DROP TABLE test_truncate_hash;