Fix 'CREATE TABLE ... LIKE ...' when lower_case_table_names

is set on case-sensitive file systems and the source table
was specified in something other than lowercase. (Bug #9761)


mysql-test/r/lowercase_table.result:
  Add results
mysql-test/t/lowercase_table.test:
  Regression test for Bug #9761
sql/sql_table.cc:
  When lower_case_table_names is set, make sure to look for
  the source table using a lowercase filename.

mysql-test/r/lowercase_table.result

@@ -78,5 +78,8 @@ ERROR 42000: Not unique table/alias: 'C'
 select C.a, c.a from t1 c, t2 C;
 ERROR 42000: Not unique table/alias: 'C'
 drop table t1, t2;
+create table t1 (a int);
+create table t2 like T1;
+drop table t1, t2;
 show tables;
 Tables_in_test

mysql-test/t/lowercase_table.test

@@ -73,4 +73,12 @@ select * from t1 c, t2 C;
 select C.a, c.a from t1 c, t2 C;
 drop table t1, t2;
 
+#
+# Bug #9761: CREATE TABLE ... LIKE ... not handled correctly when
+# lower_case_table_names is set
+
+create table t1 (a int);
+create table t2 like T1;
+drop table t1, t2;
+
 show tables;

sql/sql_table.cc

@@ -2281,6 +2281,8 @@ int mysql_create_like_table(THD* thd, TABLE_LIST* table,
 	    reg_ext, NullS);
     /* Resolve symlinks (for windows) */
     fn_format(src_path, src_path, "", "", MYF(MY_UNPACK_FILENAME));
+    if (lower_case_table_names)
+      my_casedn_str(files_charset_info, src_path);
     if (access(src_path, F_OK))
     {
       my_error(ER_BAD_TABLE_ERROR, MYF(0), src_table);