[mythtv] channel.channum too narrow

[Tony Brummett]

I recently got my hd-3000 card tuning QAM channels from my cable
provider, and some of the channum strings that the channel scanner
tried to insert into the database were longer than 5 characters.  For
example, '102#10' was silently truncated to '102#1' , resulting in 2
rows with channum '102#1'.  Making that column 6 characters wide
seemed to fix the problem for me.

I believe this patch should fix it, if I understand the way schema
updates are done...

Index: libs/libmythtv/dbcheck.cpp
===================================================================
--- libs/libmythtv/dbcheck.cpp  (revision 8641)
+++ libs/libmythtv/dbcheck.cpp  (working copy)
@@ -10,7 +10,7 @@
 #include "mythdbcon.h"

 /// This is the DB schema version expected by the running MythTV instance.
-const QString currentDatabaseVersion = "1121";
+const QString currentDatabaseVersion = "1122";

 static bool UpdateDBVersionNumber(const QString &newnumber);
 static bool performActualUpdate(const QString updates[], QString version,
@@ -1980,6 +1980,16 @@
             return false;
     }

+    if (dbver == "1121")
+    {
+        const QString updates[] = {
+"ALTER TABLE channel CHANGE channum channum VARCHAR(5) NOT NULL DEFAULT '';",
+""
+};
+        if (!performActualUpdate(updates, "1122", dbver))
+            return false;
+    }
+
 // Drop xvmc_buffer_settings table in 0.20
 // Drop dvb_dmx_buf_size and dvb_pkt_buf_size columns of channel in 0.20


-- Tony  brummett at gmail.com