diff --git a/crates/query-engine/translation/src/translation/mutation/insert.rs b/crates/query-engine/translation/src/translation/mutation/insert.rs
index 1072e7c23..52cd0bfdf 100644
--- a/crates/query-engine/translation/src/translation/mutation/insert.rs
+++ b/crates/query-engine/translation/src/translation/mutation/insert.rs
@@ -91,11 +91,15 @@ fn check_columns(
 ) -> Result<(), Error> {
     for (name, column) in columns.iter() {
         match column {
-            // nullable and identity by default columns can be inserted into or omitted.
+            // nullable, default, and identity by default columns can be inserted into or omitted.
             database::ColumnInfo {
                 nullable: database::Nullable::Nullable,
                 ..
             }
+            | database::ColumnInfo {
+                has_default: database::HasDefault::HasDefault,
+                ..
+            }
             | database::ColumnInfo {
                 is_identity: database::IsIdentity::IdentityByDefault,
                 ..
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v1_initial_configuration_is_unchanged.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v1_initial_configuration_is_unchanged.snap
index dc814f38f..1138612cd 100644
--- a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v1_initial_configuration_is_unchanged.snap
+++ b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v1_initial_configuration_is_unchanged.snap
@@ -635,7 +635,7 @@ expression: default_configuration
           "birthday": {
             "name": "birthday",
             "type": "date",
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "description": null
           },
           "height_cm": {
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v2_initial_configuration_is_unchanged.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v2_initial_configuration_is_unchanged.snap
index 4d82adb7b..053f20db7 100644
--- a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v2_initial_configuration_is_unchanged.snap
+++ b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__configuration_tests__configuration_tests__postgres_current_only_configure_v2_initial_configuration_is_unchanged.snap
@@ -768,7 +768,7 @@ expression: default_configuration
             "type": {
               "scalarType": "date"
             },
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "hasDefault": "hasDefault",
             "description": null
           },
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__schema_tests__schema_test__get_schema.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__schema_tests__schema_test__get_schema.snap
index 4aa8a8dde..8e2cf2f69 100644
--- a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__schema_tests__schema_test__get_schema.snap
+++ b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__schema_tests__schema_test__get_schema.snap
@@ -2109,11 +2109,8 @@ expression: result
         },
         "birthday": {
           "type": {
-            "type": "nullable",
-            "underlying_type": {
-              "type": "named",
-              "name": "date"
-            }
+            "type": "named",
+            "name": "date"
           }
         },
         "height_cm": {
@@ -2960,11 +2957,8 @@ expression: result
         },
         "birthday": {
           "type": {
-            "type": "nullable",
-            "underlying_type": {
-              "type": "named",
-              "name": "date"
-            }
+            "type": "named",
+            "name": "date"
           }
         },
         "height_cm": {
diff --git a/static/custom-tables.sql b/static/custom-tables.sql
index 829b256e1..390631aad 100644
--- a/static/custom-tables.sql
+++ b/static/custom-tables.sql
@@ -6,7 +6,7 @@ create schema custom;
 create table custom.dog (
   id bigint primary key generated always as identity,
   name text not null,
-  birthday date default '2024-01-17',
+  birthday date not null default '2024-01-17',
   adopter_name text null,
   height_cm numeric not null,
   height_in numeric GENERATED ALWAYS AS (height_cm / 2.54) STORED
diff --git a/static/deployment-snapshots/007e16bbacd12392daa1f0791ba1cb491a23ef88d1110c83cc6eda56b89e5511.json b/static/deployment-snapshots/55b5e4a4a84b3e64ad758fd805486f8ee4d853a2bc4d96065b9c8b80a4283689.json
similarity index 99%
rename from static/deployment-snapshots/007e16bbacd12392daa1f0791ba1cb491a23ef88d1110c83cc6eda56b89e5511.json
rename to static/deployment-snapshots/55b5e4a4a84b3e64ad758fd805486f8ee4d853a2bc4d96065b9c8b80a4283689.json
index dd70775e1..d2c01d8d4 100644
--- a/static/deployment-snapshots/007e16bbacd12392daa1f0791ba1cb491a23ef88d1110c83cc6eda56b89e5511.json
+++ b/static/deployment-snapshots/55b5e4a4a84b3e64ad758fd805486f8ee4d853a2bc4d96065b9c8b80a4283689.json
@@ -742,7 +742,7 @@
             "type": {
               "scalarType": "date"
             },
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "hasDefault": "hasDefault",
             "description": null
           },
diff --git a/static/deployment-snapshots/12be4cff0e9f14de07d3369798ced2805708c5ad75ea6a92fb1b2308781e8fae.json b/static/deployment-snapshots/d37aa40e768d774850e1fc638eab23559ef47a82f0f7f8acc44fe84fc4c9b0e2.json
similarity index 99%
rename from static/deployment-snapshots/12be4cff0e9f14de07d3369798ced2805708c5ad75ea6a92fb1b2308781e8fae.json
rename to static/deployment-snapshots/d37aa40e768d774850e1fc638eab23559ef47a82f0f7f8acc44fe84fc4c9b0e2.json
index 6e128164d..5dd744c3a 100644
--- a/static/deployment-snapshots/12be4cff0e9f14de07d3369798ced2805708c5ad75ea6a92fb1b2308781e8fae.json
+++ b/static/deployment-snapshots/d37aa40e768d774850e1fc638eab23559ef47a82f0f7f8acc44fe84fc4c9b0e2.json
@@ -609,7 +609,7 @@
           "birthday": {
             "name": "birthday",
             "type": "date",
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "description": null
           },
           "height_cm": {
diff --git a/static/postgres/v1-chinook-deployment.json b/static/postgres/v1-chinook-deployment.json
index 6e128164d..5dd744c3a 100644
--- a/static/postgres/v1-chinook-deployment.json
+++ b/static/postgres/v1-chinook-deployment.json
@@ -609,7 +609,7 @@
           "birthday": {
             "name": "birthday",
             "type": "date",
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "description": null
           },
           "height_cm": {
diff --git a/static/postgres/v2-chinook-deployment.json b/static/postgres/v2-chinook-deployment.json
index dd70775e1..d2c01d8d4 100644
--- a/static/postgres/v2-chinook-deployment.json
+++ b/static/postgres/v2-chinook-deployment.json
@@ -742,7 +742,7 @@
             "type": {
               "scalarType": "date"
             },
-            "nullable": "nullable",
+            "nullable": "nonNullable",
             "hasDefault": "hasDefault",
             "description": null
           },