Merge pull request #75 from mwild1/issue64_mysql_integers

Attempt to provide partial fix for Issue #64.

dbd/mysql/statement.c

@@ -212,6 +212,7 @@ static int statement_execute(lua_State *L) {
 		const char *str = NULL;
 		size_t *str_len = NULL;
 		double *num = NULL;
+		long *inum = NULL;
 		int *boolean = NULL;
 		char err[64];
 
@@ -226,22 +227,35 @@ static int statement_execute(lua_State *L) {
 			*boolean = lua_toboolean(L, p);
 
 			bind[i].buffer_type = MYSQL_TYPE_LONG;
-			bind[i].is_null = (int*)0;
+			bind[i].is_null = (my_bool*)0;
 			bind[i].buffer = (char *)boolean;
 			bind[i].length = 0;
 			break;
 
 		case LUA_TNUMBER:
+#if LUA_VERSION_NUM > 502
+			if (lua_isinteger(L, p)) {
+				inum = (long *)(buffer + offset);
+				offset += sizeof(long);
+				*inum = lua_tointeger(L, p);
+
+				bind[i].buffer_type = MYSQL_TYPE_LONG;
+				bind[i].is_null = (my_bool*)0;
+				bind[i].buffer = (char *)inum;
+				bind[i].length = 0;
+				break;
+			}
+#endif
 			/*
 			 * num needs to be it's own
 			 * memory here
 			 */
 			num = (double *)(buffer + offset);
 			offset += sizeof(double);
 			*num = lua_tonumber(L, p);
-
+			
 			bind[i].buffer_type = MYSQL_TYPE_DOUBLE;
-			bind[i].is_null = (int*)0;
+			bind[i].is_null = (my_bool*)0;
 			bind[i].buffer = (char *)num;
 			bind[i].length = 0;
 			break;
@@ -252,7 +266,7 @@ static int statement_execute(lua_State *L) {
 			str = lua_tolstring(L, p, str_len);
 
 			bind[i].buffer_type = MYSQL_TYPE_STRING;
-			bind[i].is_null = (int*)0;
+			bind[i].is_null = (my_bool*)0;
 			bind[i].buffer = (char *)str;
 			bind[i].length = str_len;
 			break;

tests/run_tests.lua

@@ -13,6 +13,7 @@ local sql_code = {
 	['select'] = "select * from select_tests where name = %s;",
 	['select_multi'] = "select * from select_tests where flag = %s;",
 	['select_count'] = "select count(*) as total from insert_tests;",
+	['select_limit'] = "select * from select_tests limit %s;",
 	['insert'] = "insert into insert_tests ( val ) values ( %s );",
 	['insert_returning'] = "insert into insert_tests ( val ) values ( %s ) returning id;",
 	['insert_select'] = "select * from insert_tests where id = %s;",
@@ -157,6 +158,46 @@ local function test_select()
 end
 
 
+--
+-- Added to expose the MySQL limit bug, see Github issue #64
+--
+local function test_select_limit()
+
+	local sth, err = dbh:prepare(code('select_limit'))
+	local count = 0
+	local success
+
+	assert.is_nil(err)
+	assert.is_not_nil(sth)
+	success, err = sth:execute(1)
+
+	assert.is_true(success)
+	assert.is_nil(err)
+
+	for row in sth:rows(true) do
+		count = count + 1
+
+		if config.have_booleans then
+			assert.is_true(row['flag'])
+		else
+			assert.equals(1, row['flag'])
+		end
+
+		assert.equals('Row 1', row['name'])
+		assert.is_number(row['maths'])
+	end
+
+	assert.equals(1, count)
+
+	if config.have_rowcount then
+		assert.equals(sth:rowcount(), count)
+	end
+
+	sth:close()
+
+end
+
+
 local function test_select_multi()
 
 	local sth, err = dbh:prepare(code('select_multi'))
@@ -618,6 +659,7 @@ describe("MySQL #mysql", function()
 	it( "Tests syntax error", syntax_error )
 	it( "Tests value encoding", test_encoding )
 	it( "Tests simple selects", test_select )
+	it( "Tests selects with limit", test_select_limit )
 	it( "Tests multi-row selects", test_select_multi )
 	it( "Tests inserts", test_insert )
 	it( "Tests inserts of NULL", test_insert_null )