diff --git a/samples/recursive_ddl/alphacheck_stderr.txt b/samples/recursive_ddl/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/alphacheck_stdout.txt b/samples/recursive_ddl/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/alphadag_stderr.txt b/samples/recursive_ddl/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/alphadag_stdout.txt b/samples/recursive_ddl/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/dag.dot b/samples/recursive_ddl/dag.dot
new file mode 100644
index 0000000..612516f
--- /dev/null
+++ b/samples/recursive_ddl/dag.dot
@@ -0,0 +1,3 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+}
diff --git a/samples/recursive_ddl/dag.png b/samples/recursive_ddl/dag.png
new file mode 100644
index 0000000..fc284c5
Binary files /dev/null and b/samples/recursive_ddl/dag.png differ
diff --git a/samples/recursive_ddl/external_tables.txt b/samples/recursive_ddl/external_tables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/side_effect_first/alphacheck_stderr.txt b/samples/recursive_ddl/side_effect_first/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/side_effect_first/alphacheck_stdout.txt b/samples/recursive_ddl/side_effect_first/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/side_effect_first/alphadag_stderr.txt b/samples/recursive_ddl/side_effect_first/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/side_effect_first/alphadag_stdout.txt b/samples/recursive_ddl/side_effect_first/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/side_effect_first/dag.dot b/samples/recursive_ddl/side_effect_first/dag.dot
new file mode 100644
index 0000000..612516f
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first/dag.dot
@@ -0,0 +1,3 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+}
diff --git a/samples/recursive_ddl/side_effect_first/dag.png b/samples/recursive_ddl/side_effect_first/dag.png
new file mode 100644
index 0000000..fc284c5
Binary files /dev/null and b/samples/recursive_ddl/side_effect_first/dag.png differ
diff --git a/samples/recursive_ddl/side_effect_first/external_tables.txt b/samples/recursive_ddl/side_effect_first/external_tables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stderr.txt b/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stdout.txt b/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first_with_tables/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/alphadag_stderr.txt b/samples/recursive_ddl/side_effect_first_with_tables/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/alphadag_stdout.txt b/samples/recursive_ddl/side_effect_first_with_tables/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first_with_tables/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/dag.dot b/samples/recursive_ddl/side_effect_first_with_tables/dag.dot
new file mode 100644
index 0000000..66f4840
--- /dev/null
+++ b/samples/recursive_ddl/side_effect_first_with_tables/dag.dot
@@ -0,0 +1,5 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+1 [label=t1, shape=box, type=table];
+0->1 ;
+}
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/dag.png b/samples/recursive_ddl/side_effect_first_with_tables/dag.png
new file mode 100644
index 0000000..08501fa
Binary files /dev/null and b/samples/recursive_ddl/side_effect_first_with_tables/dag.png differ
diff --git a/samples/recursive_ddl/side_effect_first_with_tables/external_tables.txt b/samples/recursive_ddl/side_effect_first_with_tables/external_tables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_all/alphacheck_stderr.txt b/samples/recursive_ddl/with_all/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/with_all/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/with_all/alphacheck_stdout.txt b/samples/recursive_ddl/with_all/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/with_all/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/with_all/alphadag_stderr.txt b/samples/recursive_ddl/with_all/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_all/alphadag_stdout.txt b/samples/recursive_ddl/with_all/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/with_all/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/with_all/dag.dot b/samples/recursive_ddl/with_all/dag.dot
new file mode 100644
index 0000000..66f4840
--- /dev/null
+++ b/samples/recursive_ddl/with_all/dag.dot
@@ -0,0 +1,5 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+1 [label=t1, shape=box, type=table];
+0->1 ;
+}
diff --git a/samples/recursive_ddl/with_all/dag.png b/samples/recursive_ddl/with_all/dag.png
new file mode 100644
index 0000000..08501fa
Binary files /dev/null and b/samples/recursive_ddl/with_all/dag.png differ
diff --git a/samples/recursive_ddl/with_all/external_tables.txt b/samples/recursive_ddl/with_all/external_tables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_functions/alphacheck_stderr.txt b/samples/recursive_ddl/with_functions/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/with_functions/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/with_functions/alphacheck_stdout.txt b/samples/recursive_ddl/with_functions/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/with_functions/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/with_functions/alphadag_stderr.txt b/samples/recursive_ddl/with_functions/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_functions/alphadag_stdout.txt b/samples/recursive_ddl/with_functions/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/with_functions/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/with_functions/dag.dot b/samples/recursive_ddl/with_functions/dag.dot
new file mode 100644
index 0000000..612516f
--- /dev/null
+++ b/samples/recursive_ddl/with_functions/dag.dot
@@ -0,0 +1,3 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+}
diff --git a/samples/recursive_ddl/with_functions/dag.png b/samples/recursive_ddl/with_functions/dag.png
new file mode 100644
index 0000000..fc284c5
Binary files /dev/null and b/samples/recursive_ddl/with_functions/dag.png differ
diff --git a/samples/recursive_ddl/with_functions/external_tables.txt b/samples/recursive_ddl/with_functions/external_tables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_tables/alphacheck_stderr.txt b/samples/recursive_ddl/with_tables/alphacheck_stderr.txt
new file mode 100644
index 0000000..a72784d
--- /dev/null
+++ b/samples/recursive_ddl/with_tables/alphacheck_stderr.txt
@@ -0,0 +1 @@
+ERROR: INVALID_ARGUMENT: Table not found: t1 [at samples/recursive_ddl/recursive_create_t1.sql:5:3]
diff --git a/samples/recursive_ddl/with_tables/alphacheck_stdout.txt b/samples/recursive_ddl/with_tables/alphacheck_stdout.txt
new file mode 100644
index 0000000..8156550
--- /dev/null
+++ b/samples/recursive_ddl/with_tables/alphacheck_stdout.txt
@@ -0,0 +1,6 @@
+Analyzing "samples/recursive_ddl/recursive_create_t1.sql"
+tables:
+	dataset.main
+	tablename1
+	tablename2
+tvfs:
diff --git a/samples/recursive_ddl/with_tables/alphadag_stderr.txt b/samples/recursive_ddl/with_tables/alphadag_stderr.txt
new file mode 100644
index 0000000..e69de29
diff --git a/samples/recursive_ddl/with_tables/alphadag_stdout.txt b/samples/recursive_ddl/with_tables/alphadag_stdout.txt
new file mode 100644
index 0000000..7293356
--- /dev/null
+++ b/samples/recursive_ddl/with_tables/alphadag_stdout.txt
@@ -0,0 +1,3 @@
+Reading paths passed as a command line arguments...
+Only files that end with .sql or .bq are analyzed.
+Reading "samples/recursive_ddl/recursive_create_t1.sql"
diff --git a/samples/recursive_ddl/with_tables/dag.dot b/samples/recursive_ddl/with_tables/dag.dot
new file mode 100644
index 0000000..66f4840
--- /dev/null
+++ b/samples/recursive_ddl/with_tables/dag.dot
@@ -0,0 +1,5 @@
+digraph G {
+0 [label="samples/recursive_ddl/recursive_create_t1.sql", shape="", type=query];
+1 [label=t1, shape=box, type=table];
+0->1 ;
+}
diff --git a/samples/recursive_ddl/with_tables/dag.png b/samples/recursive_ddl/with_tables/dag.png
new file mode 100644
index 0000000..08501fa
Binary files /dev/null and b/samples/recursive_ddl/with_tables/dag.png differ
diff --git a/samples/recursive_ddl/with_tables/external_tables.txt b/samples/recursive_ddl/with_tables/external_tables.txt
new file mode 100644
index 0000000..e69de29