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authorAndrew Dolgov <[email protected]>2017-07-04 23:41:19 +0300
committerAndrew Dolgov <[email protected]>2017-07-04 23:41:19 +0300
commit1aa0834e6c7847691c4bf0efb876a2410352445c (patch)
tree053fa8b23c85cb56f3c80e3ddeb30d96d03e6c34
parent9eebdaef2291b2af13f85b4981e609a23d91fd62 (diff)
-rw-r--r--Home.md30
-rw-r--r--home.md29
2 files changed, 29 insertions, 30 deletions
diff --git a/Home.md b/Home.md
index f9ffa68..167e978 100644
--- a/Home.md
+++ b/Home.md
@@ -1 +1,29 @@
-Welcome to Wiki! \ No newline at end of file
+### Known issues
+
+* On 32-bit systems 64-bit perceptual hash is limited to a 32-bit integer (i.e. only half of the hash is actually stored and used).
+
+### How to check database contents/hash values easily
+
+```sql
+DROP TABLE IF EXISTS phash_check_setof_type cascade;
+CREATE TABLE phash_check_setof_type (created_at timestamp, url text, phash bit(64), owner_uid int, distance int);
+
+CREATE OR REPLACE FUNCTION phash_check_url(text) RETURNS SETOF phash_check_setof_type AS $$
+ SELECT created_at,
+ url,
+ phash::bit(64),
+ owner_uid,
+ unique_1bits(
+ (SELECT phash FROM ttrss_plugin_img_phash_urls WHERE url LIKE '%' ||
+ SUBSTRING($1 FROM position('//' IN $1))),
+ phash) AS distance
+ FROM ttrss_plugin_img_phash_urls
+ ORDER BY distance limit 10
+$$ LANGUAGE SQL;
+```
+
+Use the function like this:
+
+```sql
+select * from phash_check_url('http://example.com/something.jpg');
+``` \ No newline at end of file
diff --git a/home.md b/home.md
deleted file mode 100644
index 167e978..0000000
--- a/home.md
+++ /dev/null
@@ -1,29 +0,0 @@
-### Known issues
-
-* On 32-bit systems 64-bit perceptual hash is limited to a 32-bit integer (i.e. only half of the hash is actually stored and used).
-
-### How to check database contents/hash values easily
-
-```sql
-DROP TABLE IF EXISTS phash_check_setof_type cascade;
-CREATE TABLE phash_check_setof_type (created_at timestamp, url text, phash bit(64), owner_uid int, distance int);
-
-CREATE OR REPLACE FUNCTION phash_check_url(text) RETURNS SETOF phash_check_setof_type AS $$
- SELECT created_at,
- url,
- phash::bit(64),
- owner_uid,
- unique_1bits(
- (SELECT phash FROM ttrss_plugin_img_phash_urls WHERE url LIKE '%' ||
- SUBSTRING($1 FROM position('//' IN $1))),
- phash) AS distance
- FROM ttrss_plugin_img_phash_urls
- ORDER BY distance limit 10
-$$ LANGUAGE SQL;
-```
-
-Use the function like this:
-
-```sql
-select * from phash_check_url('http://example.com/something.jpg');
-``` \ No newline at end of file