feat: trigger warning for tsql not using semicolon

sqllineage/core/parser/sqlfluff/analyzer.py

@@ -1,3 +1,5 @@
+import warnings
+
 from sqlfluff.core import Linter, SQLLexError, SQLParseError
 
 from sqllineage.core.analyzer import LineageAnalyzer
@@ -39,7 +41,15 @@ def analyze(self, sql: str) -> StatementLineageHolder:
                 statement_segment = top_segment.segments[0]
                 break
             elif top_segment.type == "batch":
-                statement_segment = top_segment.get_child("statement").segments[0]
+                statements = top_segment.get_children("statement")
+                if len(statements) > 1:
+                    warnings.warn(
+                        "SQL statements is not split by semicolon. "
+                        "SQLLineage is not guaranteed to generate correct result under this circumstances.",
+                        SyntaxWarning,
+                        stacklevel=2,
+                    )
+                statement_segment = statements[0].segments[0]
                 break
         if statement_segment is None:
             raise UnsupportedStatementException(

tests/core/test_exception.py

@@ -48,3 +48,14 @@ def test_deprecated_warning_in_sqlparse():
         LineageRunner("SELECT * FROM DUAL", dialect="non-validating")._eval()
         assert len(w) == 1
         assert issubclass(w[0].category, DeprecationWarning)
+
+
+def test_syntax_warning_no_semicolon_in_tsql():
+    with warnings.catch_warnings(record=True) as w:
+        LineageRunner(
+            """SELECT * FROM foo
+SELECT * FROM bar""",
+            dialect="tsql",
+        )._eval()
+        assert len(w) == 1
+        assert issubclass(w[0].category, SyntaxWarning)