Improve unsigned types for PostgreSQL

src/backend/postgres/table.rs

@@ -30,9 +30,10 @@ impl TableBuilder for PostgresQueryBuilder {
             },
             ColumnType::Text => sql.write_str("text"),
             ColumnType::TinyInteger | ColumnType::TinyUnsigned => sql.write_str("smallint"),
-            ColumnType::SmallInteger | ColumnType::SmallUnsigned => sql.write_str("smallint"),
-            ColumnType::Integer | ColumnType::Unsigned => sql.write_str("integer"),
-            ColumnType::BigInteger | ColumnType::BigUnsigned => sql.write_str("bigint"),
+            ColumnType::SmallInteger => sql.write_str("smallint"),
+            ColumnType::Integer | ColumnType::SmallUnsigned => sql.write_str("integer"),
+            ColumnType::BigInteger | ColumnType::Unsigned => sql.write_str("bigint"),
+            ColumnType::BigUnsigned => sql.write_str("numeric"),
             ColumnType::Float => sql.write_str("real"),
             ColumnType::Double => sql.write_str("double precision"),
             ColumnType::Decimal(precision) => match precision {

src/table/column.rs

@@ -42,9 +42,9 @@ impl From<&mut ColumnDef> for ColumnDef {
 /// | Integer               | int               | integer                     | integer                      |
 /// | BigInteger            | bigint            | bigint                      | integer                      |
 /// | TinyUnsigned          | tinyint unsigned  | smallint                    | tinyint                      |
-/// | SmallUnsigned         | smallint unsigned | smallint                    | smallint                     |
-/// | Unsigned              | int unsigned      | integer                     | integer                      |
-/// | BigUnsigned           | bigint unsigned   | bigint                      | integer                      |
+/// | SmallUnsigned         | smallint unsigned | integer                     | smallint                     |
+/// | Unsigned              | int unsigned      | bigint                      | integer                      |
+/// | BigUnsigned           | bigint unsigned   | numeric                     | integer                      |
 /// | Float                 | float             | real                        | float                        |
 /// | Double                | double            | double precision            | double                       |
 /// | Decimal               | decimal           | decimal                     | real(A, B)                   |

tests/postgres/table.rs

@@ -91,8 +91,8 @@ fn create_3() {
             r#""id" integer GENERATED BY DEFAULT AS IDENTITY NOT NULL PRIMARY KEY,"#,
             r#""font_size" integer NOT NULL,"#,
             r#""character" varchar(255) NOT NULL,"#,
-            r#""size_w" integer NOT NULL,"#,
-            r#""size_h" integer NOT NULL,"#,
+            r#""size_w" bigint NOT NULL,"#,
+            r#""size_h" bigint NOT NULL,"#,
             r#""font_id" integer DEFAULT NULL,"#,
             r#"CONSTRAINT "FK_2e303c3a712662f1fc2a4d0aad6""#,
             r#"FOREIGN KEY ("font_id") REFERENCES "font" ("id")"#,
@@ -731,8 +731,8 @@ fn create_19() {
             r#""id" integer GENERATED BY DEFAULT AS IDENTITY NOT NULL PRIMARY KEY,"#,
             r#""font_size" integer NOT NULL,"#,
             r#""character" varchar(255) NOT NULL,"#,
-            r#""size_w" integer NOT NULL,"#,
-            r#""size_h" integer NOT NULL,"#,
+            r#""size_w" bigint NOT NULL,"#,
+            r#""size_h" bigint NOT NULL,"#,
             r#""font_id" integer DEFAULT NULL,"#,
             r#"CONSTRAINT "idx-character-area" (("size_h" * "size_w"))"#,
             r#")"#,

tests/postgres/types.rs

@@ -161,3 +161,19 @@ fn alter_6() {
         r#"ALTER TYPE "schema"."font" RENAME TO "typeface""#
     )
 }
+
+#[test]
+fn unsigned_types() {
+    let query_builder = PostgresQueryBuilder {};
+
+    let column_to_string = |column_type| {
+        let mut out = String::new();
+        query_builder.prepare_column_type(column_type, &mut out);
+        out
+    };
+
+    assert_eq!(column_to_string(&ColumnType::TinyUnsigned), "smallint");
+    assert_eq!(column_to_string(&ColumnType::SmallUnsigned), "integer");
+    assert_eq!(column_to_string(&ColumnType::Unsigned), "bigint");
+    assert_eq!(column_to_string(&ColumnType::BigUnsigned), "numeric");
+}