Issue 487: support the MySQL "SET foreign_key_checks = 0" command

h2/src/docsrc/html/changelog.html

@@ -59,6 +59,7 @@ Change Log
     Now they are hidden only if the database is not H2. Patch from "mgcodeact"/"cumer d"
 </li><li>MySQL compatibiltity, support the "AUTO_INCREMENT=3" part of the CREATE TABLE statement.
 </li><li>Issue 486: MySQL compatibiltity, support the "DEFAULT CHARSET" part of the CREATE TABLE statement.
+</li><li>Issue 487: support the MySQL "SET foreign_key_checks = 0" command
 </li></ul>
 
 <h2>Version 1.3.172 (2013-05-25)</h2>

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

@@ -4706,6 +4706,10 @@ public class Parser {
                 // HSQLDB compatibility
                 currentToken = SetTypes.getTypeName(SetTypes.MAX_LOG_SIZE);
             }
+            if (isToken("FOREIGN_KEY_CHECKS")) {
+                // MySQL compatibility
+                currentToken = SetTypes.getTypeName(SetTypes.REFERENTIAL_INTEGRITY);
+            }
             int type = SetTypes.getType(currentToken);
             if (type < 0) {
                 throw getSyntaxError();

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

@@ -267,6 +267,10 @@ public class TestCompatibility extends TestBase {
         stat.execute("CREATE TABLE TEST_5(ID INT PRIMARY KEY) ENGINE=InnoDb auto_increment=3 default charset=UTF8");
         stat.execute("CREATE TABLE TEST_6(ID INT PRIMARY KEY) ENGINE=InnoDb auto_increment=3 charset=UTF8");
 
+        // this maps to SET REFERENTIAL_INTEGRITY TRUE/FALSE
+        stat.execute("SET foreign_key_checks = 0");
+        stat.execute("SET foreign_key_checks = 1");
+        
         // Check if mysql comments are supported, ensure clean connection
         conn.close();
         conn = getConnection("compatibility;MODE=MYSQL");