schema: identify hash values by an integerhashid

This one is a bit more complex, than the other transformations, because
the new hashvalue table has to be cleaned with a trigger. During a test
import the -wal file exploded. The resulting db is similar in size to
the original.

1 files changed, 2 insertions, 2 deletions

diff --git a/README b/README
index 44b086a..ff96fae 100644
--- a/README
+++ b/README
@@ -38,12 +38,12 @@ SQL database by hand. Here are some example queries.
 
 Finding the 100 largest files shared with multiple packages.
 
-    SELECT pa.name, a.filename, pb.name, b.filename, a.size FROM content AS a JOIN hash AS ha ON a.id = ha.cid JOIN hash AS hb ON ha.hash = hb.hash JOIN content AS b ON b.id = hb.cid JOIN package AS pa ON b.pid = pa.id JOIN package AS pb ON b.pid = pb.id WHERE (a.pid != b.pid OR a.filename != b.filename) ORDER BY a.size DESC LIMIT 100;
+    SELECT pa.name, a.filename, pb.name, b.filename, a.size FROM content AS a JOIN hash AS ha ON a.id = ha.cid JOIN hash AS hb ON ha.hid = hb.hid JOIN content AS b ON b.id = hb.cid JOIN package AS pa ON a.pid = pa.id JOIN package AS pb ON b.pid = pb.id WHERE (a.pid != b.pid OR a.filename != b.filename) ORDER BY a.size DESC LIMIT 100;
 
 Finding those top 100 files that save most space when being reduced to only
 one copy in the archive.
 
-    SELECT hash, sum(size)-min(size), count(*), count(distinct pid) FROM content JOIN hash ON content.id = hash.cid WHERE hash.function = "sha512" GROUP BY hash ORDER BY sum(size)-min(size) DESC LIMIT 100;
+    SELECT hashvalue.hash, sum(size)-min(size), count(*), count(distinct pid) FROM content JOIN hash ON content.id = hash.cid JOIN hashvalue ON hash.hid = hashvalue.id WHERE hash.function = "sha512" GROUP BY hash.hid ORDER BY sum(size)-min(size) DESC LIMIT 100;
 
 Finding PNG images that do not carry a .png file extension.