fix(introspection, sqlserver): Accept (and ignore) multi-line shared …

…defaults (#4884)

* fix(introspection, sqlserver): Accept (and ignore) multi-line shared defaults

schema-engine/sql-introspection-tests/tests/simple/mssql/default_with_create_default_multiline.sql

@@ -0,0 +1,26 @@
+-- tags=mssql2017
+
+CREATE TABLE a (
+     id INT IDENTITY,
+     savings INT,
+     CONSTRAINT [A_pkey] PRIMARY KEY (id)
+);
+
+EXEC('/* This is a comment */' + 
+     'CREATE DEFAULT NEARLY_NOTHING AS 0');
+EXEC('sp_bindefault ''NEARLY_NOTHING'', ''a.savings''');
+/*
+generator js {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlserver"
+  url      = env("DATABASE_URL")
+}
+
+model a {
+  id      Int  @id(map: "A_pkey") @default(autoincrement())
+  savings Int?
+}
+*/

schema-engine/sql-migration-tests/tests/migrations/mssql.rs

@@ -57,6 +57,43 @@ fn shared_default_constraints_are_ignored_issue_5423(api: TestApi) {
         .assert_no_steps();
 }
 
+#[test_connector(tags(Mssql))]
+fn shared_default_constraints_with_multilines_are_ignored_issue_24275(api: TestApi) {
+    let schema = api.schema_name();
+
+    api.raw_cmd(&format!(
+        r#"
+        /* This is a comment */
+        CREATE DEFAULT [{schema}].dogdog AS 'mugi'
+        "#
+    ));
+
+    api.raw_cmd(&format!(
+        r#"
+            CREATE TABLE [{schema}].dogs (
+                id INT IDENTITY,
+                name NVARCHAR(255) NOT NULL,
+                CONSTRAINT [dogs_pkey] PRIMARY KEY CLUSTERED ([id] ASC)
+            )
+        "#
+    ));
+
+    api.raw_cmd(&format!("sp_bindefault '{schema}.dogdog', '{schema}.dogs.name'"));
+
+    let dm = r#"
+        model dogs {
+            id Int @id @default(autoincrement())
+            name String @db.NVarChar(255)
+        }
+    "#;
+
+    api.schema_push_w_datasource(dm)
+        .migration_id(Some("first"))
+        .send()
+        .assert_green()
+        .assert_no_steps();
+}
+
 #[test_connector(tags(Mssql))]
 fn mssql_apply_migrations_error_output(api: TestApi) {
     let dm = "";

schema-engine/sql-schema-describer/src/mssql.rs

@@ -61,7 +61,7 @@ static DEFAULT_DB_GEN: Lazy<Regex> = Lazy::new(|| Regex::new(r"\((.*)\)").unwrap
 /// ```ignore
 /// CREATE DEFAULT catcat AS 'musti';
 /// ```
-static DEFAULT_SHARED_CONSTRAINT: Lazy<Regex> = Lazy::new(|| Regex::new(r"^CREATE DEFAULT (.*)").unwrap());
+static DEFAULT_SHARED_CONSTRAINT: Lazy<Regex> = Lazy::new(|| Regex::new(r"CREATE DEFAULT (.*)").unwrap());
 
 pub struct SqlSchemaDescriber<'a> {
     conn: &'a dyn Queryable,