diff --git a/pagequery.go b/pagequery.go
index 0665fd4..7759a6d 100644
--- a/pagequery.go
+++ b/pagequery.go
@@ -1,10 +1,8 @@
 package f5
 
-/*
 import (
 	"fmt"
 )
-*/
 
 type LinkOp int32
 
@@ -130,3 +128,93 @@ func (this *PageQueryOne) IgnoreEmpy() *PageQueryOne {
 	this.ignoreEmpty = true
 	return this
 }
+
+
+func (this *PageQueryOne) And() PageQueryFilter {
+	this.linkOp = LK_AND
+	return this
+}
+
+func (this *PageQueryOne) Or() PageQueryFilter {
+	this.linkOp = LK_OR
+	return this
+}
+
+func (this *PageQueryOne) Not() PageQueryFilter {
+	this.not = true
+	return this
+}
+
+func (this *PageQueryOne) GenSql() string {
+	if this.ignoreEmpty && this.val == "" {
+		return " "
+	}
+	sql := ""
+	switch this.cond {
+	case QC_LIKE:
+		sql = fmt.Sprintf("%s LIKE '%%%s%%'", this.fieldName, this.val)
+	case QC_EQ:
+		sql = fmt.Sprintf("%s = '%s'", this.fieldName, this.val)
+	case QC_LT:
+		sql = fmt.Sprintf("%s < '%s'", this.fieldName, this.val)
+	case QC_LE:
+		sql = fmt.Sprintf("%s <= '%s'", this.fieldName, this.val)
+	case QC_GT:
+		sql = fmt.Sprintf("%s > '%s'", this.fieldName, this.val)
+	case QC_GE:
+		sql = fmt.Sprintf("%s >= '%s'", this.fieldName, this.val)
+	case QC_CUSTOM:
+		sql = fmt.Sprintf("%s", this.val)
+	default:
+		panic("page query cond error")
+	}
+	if this.not {
+		sql = fmt.Sprintf( "NOT (%s) ", sql)
+	}
+	switch this.linkOp {
+	case LK_AND:
+		sql = fmt.Sprintf( "AND (%s) ", sql)
+	case LK_OR:
+		sql = fmt.Sprintf(" OR (%s) ", sql)
+	default:
+		panic("page query linkOp error")
+	}
+	return sql
+}
+
+func (this *PageQueryComp) And() PageQueryFilter {
+	this.linkOp = LK_AND
+	return this
+}
+
+func (this *PageQueryComp) Or() PageQueryFilter {
+	this.linkOp = LK_OR
+	return this
+}
+
+func (this *PageQueryComp) Not() PageQueryFilter {
+	this.not = true
+	return this
+}
+
+func (this *PageQueryComp) GenSql() string {
+	if len(this.subFilters) <= 0 {
+		return " "
+	}
+	sql := ""
+	for _, filter := range this.subFilters {
+		sql += filter.GenSql()
+	}
+	if this.not {
+		sql = fmt.Sprintf( "NOT (%s) ", sql)
+	}
+	switch this.linkOp {
+	case LK_AND:
+		sql = fmt.Sprintf( "AND (%s) ", sql)
+	case LK_OR:
+		sql = fmt.Sprintf(" OR (%s) ", sql)
+	default:
+		panic("page query linkOp error")
+	}
+	return sql
+}