Fix "USE schema" command for MySQL compatibility, patch by mfulton

h2/src/docsrc/html/changelog.html

@@ -38,6 +38,7 @@ Change Log
 </li><li>Fix bug which could generate deadlocks when multiple connections accessed the same table.
 </li><li>Some places in the code were not respecting the value set in the "SET MAX_MEMORY_ROWS x" command
 </li><li>Fix bug which could generate a NegativeArraySizeException when performing large (>40M) row union operations
+</li><li>Fix "USE schema" command for MySQL compatibility, patch by mfulton
 </li></ul>
 
 <h2>Version 1.4.182 Beta (2014-10-17)</h2>

h2/src/main/org/h2/command/Parser.java

@@ -5083,13 +5083,10 @@ public class Parser {
     }
 
     private Prepared parseUse() {
-        if (readIf("SCHEMA")) {
-            readIfEqualOrTo();
-            Set command = new Set(session, SetTypes.SCHEMA);
-            command.setString(readAliasIdentifier());
-            return command;
-        }
-        throw getSyntaxError();
+        readIfEqualOrTo();
+        Set command = new Set(session, SetTypes.SCHEMA);
+        command.setString(readAliasIdentifier());
+        return command;
     }
 
     private Set parseSetCollation() {

h2/src/test/org/h2/test/db/TestCompatibility.java

@@ -231,12 +231,10 @@ public class TestCompatibility extends TestBase {
     private void testMySQL() throws SQLException {
         Statement stat = conn.createStatement();
         stat.execute("create schema test_schema");
-        stat.execute("use schema test_schema");
-        assertResult("TEST_SCHEMA", stat,
-                "select schema()");
-        stat.execute("use schema public");
-        assertResult("PUBLIC", stat,
-                "select schema()");
+        stat.execute("use test_schema");
+        assertResult("TEST_SCHEMA", stat, "select schema()");
+        stat.execute("use public");
+        assertResult("PUBLIC", stat, "select schema()");
 
         stat.execute("SELECT 1");
         stat.execute("DROP TABLE IF EXISTS TEST");