diff --git a/squash-core/src/org/jetbrains/squash/definition/ColumnProperty.kt b/squash-core/src/org/jetbrains/squash/definition/ColumnProperty.kt
index fb32d63..3ecd2c4 100644
--- a/squash-core/src/org/jetbrains/squash/definition/ColumnProperty.kt
+++ b/squash-core/src/org/jetbrains/squash/definition/ColumnProperty.kt
@@ -28,6 +28,8 @@ fun <V> ReferenceColumn<V>.nullable(): ReferenceColumn<V?> = addProperty(Nullabl
  */
 fun <V, C : ColumnDefinition<V>> C.default(value: V): C = addProperty(DefaultValueProperty(value))
 
+fun <V, C : ColumnDefinition<V>> C.default(generate: () -> V?):C = addProperty(DefaultValueProperty(null, generate))
+
 object AutoIncrementProperty : ColumnProperty {
     override fun toString(): String = "++"
 }
@@ -36,8 +38,20 @@ object NullableProperty : ColumnProperty {
     override fun toString(): String = "?"
 }
 
-class DefaultValueProperty<out V>(val value: V) : ColumnProperty {
-    override fun toString(): String = "= $value"
+class DefaultValueProperty<out V>(defaultValue: V?, private val generate:(() -> V)? = null) : ColumnProperty {
+
+	val value:V? = defaultValue
+		get():V? {
+			return if (generate != null) {
+				val result = generate.invoke()
+				println("Generated Value 1: $result")
+				result ?: field
+			} else {
+				field
+			}
+		}
+
+	override fun toString(): String = "= $value"
 }
 
 
diff --git a/squash-core/src/org/jetbrains/squash/statements/Insert.kt b/squash-core/src/org/jetbrains/squash/statements/Insert.kt
index db31f6b..1fad454 100644
--- a/squash-core/src/org/jetbrains/squash/statements/Insert.kt
+++ b/squash-core/src/org/jetbrains/squash/statements/Insert.kt
@@ -10,13 +10,22 @@ open class InsertValuesStatement<T : Table, R>(val table: T) : Statement<R> {
     val values: MutableMap<Column<*>, Any?> = LinkedHashMap()
 
     operator fun <V, S : V> set(column: Column<@Exact V>, value: S?) {
+		// Error if the column is being set more than once
         if (values.containsKey(column)) {
             error("$column is already initialized")
         }
-        if (column.properties.all { it !is NullableProperty } && value == null) {
+
+		val finalValue = value ?: if (column.hasProperty<DefaultValueProperty<S>>())
+			column.propertyOrNull<DefaultValueProperty<S>>()!!.value
+		else
+			null
+
+		// Error if the column is not nullable and it is getting set to null
+        if (column.properties.none { it is NullableProperty } && finalValue == null) {
             error("Trying to set null to not nullable column $column")
         }
-        values[column] = value
+
+        values[column] = finalValue
     }
 
     operator fun <V> get(column: Column<V>): Any? = values[column]