Extract database name from query instead of path for mssql

job.go

@@ -356,14 +356,33 @@ func (j *Job) updateConnections() {
 			if u.User != nil {
 				user = u.User.Username()
 			}
+
+			// For SQL Server connections,
+			// url.path is reserved for sql server instance not the database name
+			// database name can be specified in multiple ways:
+			// 1. Query parameter: database=dbname
+			// 2. Query parameter: initial catalog=dbname
+			database := ""
+			if strings.HasPrefix(conn, "sqlserver://") {
+				// Check for 'database' parameter first
+				if dbParam := getQueryStringCaseInsensitive(u.Query(), "database"); dbParam != "" {
+					database = dbParam
+				} else if catalogParam := getQueryStringCaseInsensitive(u.Query(), "initial catalog"); catalogParam != "" {
+					// 'initial catalog' is an alternative to 'database' parameter
+					database = catalogParam
+				}
+			} else {
+				database = strings.TrimPrefix(u.Path, "/")
+			}
+
 			// we expose some of the connection variables as labels, so we need to
 			// remember them
 			newConn := &connection{
 				conn:     nil,
 				url:      conn,
 				driver:   u.Scheme,
 				host:     u.Host,
-				database: strings.TrimPrefix(u.Path, "/"),
+				database: database,
 				user:     user,
 			}
 			if newConn.driver == "athena" {
@@ -387,11 +406,11 @@ func (j *Job) updateConnections() {
 				privateKeyPath := os.ExpandEnv(queryParams.Get("private_key_file"))
 
 				cfg := &gosnowflake.Config{
-					Account: u.Host,
-					User:    u.User.Username(),
-					Role:    queryParams.Get("role"),
+					Account:  u.Host,
+					User:     u.User.Username(),
+					Role:     queryParams.Get("role"),
 					Database: queryParams.Get("database"),
-					Schema: queryParams.Get("schema"),
+					Schema:   queryParams.Get("schema"),
 				}
 
 				if privateKeyPath != "" {
@@ -683,3 +702,13 @@ func (c *connection) connect(job *Job) error {
 	c.conn = conn
 	return nil
 }
+
+func getQueryStringCaseInsensitive(values url.Values, key string) string {
+	key = strings.ToLower(key)
+	for k, v := range values {
+		if strings.ToLower(k) == key && len(v) > 0 {
+			return v[0]
+		}
+	}
+	return ""
+}