diff --git a/pkg/pool/dbpool.go b/pkg/pool/dbpool.go
index 6fb46af3e..a67fde779 100644
--- a/pkg/pool/dbpool.go
+++ b/pkg/pool/dbpool.go
@@ -12,6 +12,7 @@ import (
 	"github.com/pg-sharding/spqr/pkg/shard"
 	"github.com/pg-sharding/spqr/pkg/spqrlog"
 	"github.com/pg-sharding/spqr/pkg/tsa"
+	"github.com/pg-sharding/spqr/pkg/txstatus"
 )
 
 type InstancePoolImpl struct {
@@ -178,6 +179,13 @@ func (s *InstancePoolImpl) Put(sh shard.Shard) error {
 			Msg("discarding unsync connection")
 		return s.pool.Discard(sh)
 	}
+	if sh.TxStatus() != txstatus.TXIDLE {
+		spqrlog.Zero.Error().
+			Uint("shard", spqrlog.GetPointer(sh)).
+			Str("txstatus", sh.TxStatus().String()).
+			Msg("discarding non-idle connection")
+		return s.pool.Discard(sh)
+	}
 	return s.pool.Put(sh)
 }
 
diff --git a/router/qrouter/proxy_routing.go b/router/qrouter/proxy_routing.go
index 56f4055e7..5b695722a 100644
--- a/router/qrouter/proxy_routing.go
+++ b/router/qrouter/proxy_routing.go
@@ -213,6 +213,25 @@ func (qr *ProxyQrouter) RouteKeyWithRanges(ctx context.Context, expr lyx.Node, m
 	}
 }
 
+func (meta *RoutingMetadataContext) RecordShardingColumnValue(alias, colname, value string) {
+	if !meta.CheckColumnRls(colname) {
+		spqrlog.Zero.Debug().
+			Str("colname", colname).
+			Msg("skip column due no rule mathing")
+		return
+	}
+
+	resolvedRelation, err := meta.ResolveRelationByAlias(alias)
+	if err != nil {
+		// failed to relove relation, skip column
+		meta.unparsed_columns[colname] = struct{}{}
+		return
+	}
+
+	// will not work not ints
+	meta.RecordConstExpr(resolvedRelation, colname, value)
+}
+
 // TODO : unit tests
 // deparse sharding column-value pair from query Where clause
 func (qr *ProxyQrouter) routeByClause(ctx context.Context, expr lyx.Node, meta *RoutingMetadataContext) error {
@@ -232,48 +251,31 @@ func (qr *ProxyQrouter) routeByClause(ctx context.Context, expr lyx.Node, meta *
 
 				alias, colname := lft.TableAlias, lft.ColName
 
-				if !meta.CheckColumnRls(colname) {
-					spqrlog.Zero.Debug().
-						Str("colname", colname).
-						Msg("skip column due no rule mathing")
-					continue
-				}
-
-				resolvedRelation, err := meta.ResolveRelationByAlias(alias)
-				if err != nil {
-					// failed to relove relation, skip column
-					meta.unparsed_columns[colname] = struct{}{}
-					continue
-				}
-
 				/* simple key-value pair */
 				switch rght := texpr.Right.(type) {
 				case *lyx.ParamRef:
-					if rght.Number > len(meta.params) {
-						return ComplexQuery
+					if rght.Number <= len(meta.params) {
+						meta.RecordShardingColumnValue(alias, colname, string(meta.params[rght.Number-1]))
 					}
-
-					// will not work not ints
-					meta.RecordConstExpr(resolvedRelation, colname, string(meta.params[rght.Number-1]))
-
+					// else  error out?
 				case *lyx.AExprSConst:
 					// TBD: postpone routing from here to root of parsing tree
-					meta.RecordConstExpr(resolvedRelation, colname, rght.Value)
+					meta.RecordShardingColumnValue(alias, colname, rght.Value)
 				case *lyx.AExprIConst:
 					// TBD: postpone routing from here to root of parsing tree
 					// maybe expimely inefficient. Will be fixed in SPQR-2.0
-					meta.RecordConstExpr(resolvedRelation, colname, fmt.Sprintf("%d", rght.Value))
+					meta.RecordShardingColumnValue(alias, colname, fmt.Sprintf("%d", rght.Value))
 				case *lyx.AExprList:
 					if len(rght.List) != 0 {
 						expr := rght.List[0]
 						switch bexpr := expr.(type) {
 						case *lyx.AExprSConst:
 							// TBD: postpone routing from here to root of parsing tree
-							meta.RecordConstExpr(resolvedRelation, colname, bexpr.Value)
+							meta.RecordShardingColumnValue(alias, colname, bexpr.Value)
 						case *lyx.AExprIConst:
 							// TBD: postpone routing from here to root of parsing tree
 							// maybe expimely inefficient. Will be fixed in SPQR-2.0
-							meta.RecordConstExpr(resolvedRelation, colname, fmt.Sprintf("%d", bexpr.Value))
+							meta.RecordShardingColumnValue(alias, colname, fmt.Sprintf("%d", bexpr.Value))
 						}
 					}
 				case *lyx.FuncApplication:
@@ -342,8 +344,8 @@ func (qr *ProxyQrouter) DeparseSelectStmt(ctx context.Context, selectStmt lyx.No
 
 	/* SELECT * FROM VALUES() ... */
 	case *lyx.ValueClause:
-                // TODO: process this
 		meta.ValuesLists = s.Values
+		return nil
 	}
 
 	return ComplexQuery
diff --git a/router/qrouter/proxy_routing_test.go b/router/qrouter/proxy_routing_test.go
index 1f955a3ca..066a0a6a6 100644
--- a/router/qrouter/proxy_routing_test.go
+++ b/router/qrouter/proxy_routing_test.go
@@ -300,6 +300,34 @@ func TestSingleShard(t *testing.T) {
 	assert.NoError(err)
 
 	for _, tt := range []tcase{
+
+		{
+			query: `
+			DELETE 
+				FROM t 
+			WHERE 
+				j = 
+				any(array(select * from t where i <= 2))
+			/* __spqr__default_route_behaviour: BLOCK */  returning *;
+			`,
+			err: nil,
+			exp: routingstate.ShardMatchState{
+				Route: &routingstate.DataShardRoute{
+					Shkey: kr.ShardKey{
+						Name: "sh1",
+					},
+					Matchedkr: &kr.KeyRange{
+						ShardID:    "sh1",
+						ID:         "id1",
+						Dataspace:  dataspace,
+						LowerBound: []byte("1"),
+						UpperBound: []byte("11"),
+					},
+				},
+				TargetSessionAttrs: "any",
+			},
+		},
+
 		{
 			query: `
 			DELETE