diff --git a/plugin/filter/common_converter.go b/plugin/filter/common_converter.go
index 73c693911..6ad0a04c3 100644
--- a/plugin/filter/common_converter.go
+++ b/plugin/filter/common_converter.go
@@ -122,7 +122,7 @@ func (c *CommonSQLConverter) handleComparisonOperator(ctx *ConvertContext, callE
 		return err
 	}
 
-	if !slices.Contains([]string{"creator_id", "created_ts", "updated_ts", "visibility", "content", "has_task_list", "has_link", "has_code", "has_incomplete_tasks"}, identifier) {
+	if !slices.Contains([]string{"creator_id", "created_ts", "updated_ts", "visibility", "content", "pinned", "has_task_list", "has_link", "has_code", "has_incomplete_tasks"}, identifier) {
 		return errors.Errorf("invalid identifier for %s", callExpr.Function)
 	}
 
@@ -140,6 +140,8 @@ func (c *CommonSQLConverter) handleComparisonOperator(ctx *ConvertContext, callE
 		return c.handleStringComparison(ctx, identifier, operator, value)
 	case "creator_id":
 		return c.handleIntComparison(ctx, identifier, operator, value)
+	case "pinned":
+		return c.handlePinnedComparison(ctx, operator, value)
 	case "has_task_list", "has_link", "has_code", "has_incomplete_tasks":
 		return c.handleBooleanComparison(ctx, identifier, operator, value)
 	}
@@ -491,6 +493,35 @@ func (c *CommonSQLConverter) handleIntComparison(ctx *ConvertContext, field, ope
 	return nil
 }
 
+func (c *CommonSQLConverter) handlePinnedComparison(ctx *ConvertContext, operator string, value interface{}) error {
+	if operator != "=" && operator != "!=" {
+		return errors.Errorf("invalid operator for pinned field")
+	}
+
+	valueBool, ok := value.(bool)
+	if !ok {
+		return errors.New("invalid boolean value for pinned field")
+	}
+
+	tablePrefix := c.dialect.GetTablePrefix("memo")
+
+	var sqlExpr string
+	if _, ok := c.dialect.(*PostgreSQLDialect); ok {
+		sqlExpr = fmt.Sprintf("%s.pinned %s %s", tablePrefix, operator, c.dialect.GetParameterPlaceholder(c.paramIndex))
+	} else {
+		sqlExpr = fmt.Sprintf("%s.`pinned` %s %s", tablePrefix, operator, c.dialect.GetParameterPlaceholder(c.paramIndex))
+	}
+
+	if _, err := ctx.Buffer.WriteString(sqlExpr); err != nil {
+		return err
+	}
+
+	ctx.Args = append(ctx.Args, c.dialect.GetBooleanValue(valueBool))
+	c.paramIndex++
+
+	return nil
+}
+
 func (c *CommonSQLConverter) handleBooleanComparison(ctx *ConvertContext, field, operator string, value interface{}) error {
 	if operator != "=" && operator != "!=" {
 		return errors.Errorf("invalid operator for %s", field)
@@ -574,7 +605,7 @@ func (c *CommonSQLConverter) handleBooleanComparison(ctx *ConvertContext, field,
 
 	// Handle PostgreSQL differently - it uses the raw operator
 	if _, ok := c.dialect.(*PostgreSQLDialect); ok {
-		var jsonExtract = c.dialect.GetJSONExtract(jsonPath)
+		jsonExtract := c.dialect.GetJSONExtract(jsonPath)
 
 		sqlExpr := fmt.Sprintf("(%s)::boolean %s %s",
 			jsonExtract,