Documentation: Add more examples

Added a couple of more examples

Signed-off-by: Antonio Jesus Navarro Perez <[email protected]>

Author: ajnavarro

docs/using-gitbase/examples.md

@@ -12,7 +12,22 @@ WHERE commits.commit_author_name = 'Javi Fontan' AND refs.ref_name='HEAD';
 ## Get all the HEAD references from all the repositories
 
 ```sql
-SELECT * FROM refs WHERE ref_name = 'HEAD'
+SELECT * FROM refs WHERE ref_name = 'HEAD';
+```
+
+## First commit on HEAD history for all repositories
+
+```sql
+SELECT
+	file_path,
+	ref_commits.repository_id
+FROM
+	commit_files
+NATURAL JOIN
+	ref_commits
+WHERE
+	ref_commits.ref_name = 'HEAD'
+	AND ref_commits.index = 0;
 ```
 
 ## Commits that appear in more than one reference
@@ -24,7 +39,7 @@ SELECT * FROM (
     INNER JOIN commits c
         ON r.commit_hash = c.commit_hash
     GROUP BY c.commit_hash
-) t WHERE num > 1
+) t WHERE num > 1;
 ```
 
 ##  Get the number of blobs per HEAD commit
@@ -36,7 +51,7 @@ INNER JOIN commits c
     ON r.ref_name = 'HEAD' AND r.commit_hash = c.commit_hash
 INNER JOIN commit_blobs cb
     ON cb.commit_hash = c.commit_hash
-GROUP BY c.commit_hash
+GROUP BY c.commit_hash;
 ```
 
 ## Get commits per committer, per month in 2015
@@ -53,29 +68,61 @@ FROM (
             ON YEAR(c.committer_when) = 2015 AND r.commit_hash = c.commit_hash
     WHERE r.ref_name = 'HEAD'
 ) as t
-GROUP BY committer_email, month, repo_id
+GROUP BY committer_email, month, repo_id;
+```
+
+## Files from first 6 commits from HEAD references that contains some key and are not in vendor directory
+
+```sql
+select
+	files.file_path,
+	ref_commits.repository_id,
+    files.blob_content
+FROM
+	files
+NATURAL JOIN
+	commit_files
+NATURAL JOIN
+	ref_commits
+WHERE
+	ref_commits.ref_name = 'HEAD'
+	AND ref_commits.index BETWEEN 0 AND 5
+	AND is_binary(blob_content) = false
+    AND files.file_path NOT REGEXP '^vendor.*'
+	AND (
+        blob_content REGEXP '(?i)facebook.*[\'\\"][0-9a-f]{32}[\'\\"]'
+        OR blob_content REGEXP '(?i)twitter.*[\'\\"][0-9a-zA-Z]{35,44}[\'\\"]'
+        OR blob_content REGEXP '(?i)github.*[\'\\"][0-9a-zA-Z]{35,40}[\'\\"]'
+        OR blob_content REGEXP 'AKIA[0-9A-Z]{16}'
+        OR blob_content REGEXP '(?i)reddit.*[\'\\"][0-9a-zA-Z]{14}[\'\\"]'
+        OR blob_content REGEXP '(?i)heroku.*[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}'
+        OR blob_content REGEXP '.*-----BEGIN PRIVATE KEY-----.*'
+        OR blob_content REGEXP '.*-----BEGIN RSA PRIVATE KEY-----.*'
+        OR blob_content REGEXP '.*-----BEGIN DSA PRIVATE KEY-----.*'
+        OR blob_content REGEXP '.*-----BEGIN OPENSSH PRIVATE KEY-----.*'
+    );
 ```
 
 ## Create an index for columns on a table
 
 You can create an index either on a specific column or on several columns:
 
 ```sql
-CREATE INDEX commits_hash_idx ON commits USING pilosa (commit_hash)
+CREATE INDEX commits_hash_idx ON commits USING pilosa (commit_hash);
 
-CREATE INDEX files_commit_path_blob_idx ON commit_files USING pilosa (commit_hash, file_path, blob_hash)
+CREATE INDEX files_commit_path_blob_idx ON commit_files USING pilosa (commit_hash, file_path, blob_hash);
 ```
 
 ## Create an index for an expression on a table
 
 Note that just one expression at a time is allowed to be indexed.
 
 ```sql
-CREATE INDEX files_lang_idx ON files USING pilosa (language(file_path, blob_content))
+CREATE INDEX files_lang_idx ON files USING pilosa (language(file_path, blob_content));
 ```
 
 ## Drop a table's index
 
 ```sql
-DROP INDEX files_lang_idx ON files
+DROP INDEX files_lang_idx ON files;
 ```