BATCH-762: changed ExecutionContext storage strategy to use JSON for serialization in a single String/CLOB

spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/support/MySqlPagingQueryProvider.java

@@ -62,7 +62,7 @@ public class MySqlPagingQueryProvider extends AbstractSqlPagingQueryProvider {
 		sql.append(" FROM ").append(getFromClause());
 		sql.append(getWhereClause() == null ? "" : " WHERE " + getWhereClause());
 		sql.append(" ORDER BY ").append(getSortKey()).append(" ASC");
-		sql.append(" LIMIT ").append(offset).append(" 1");
+		sql.append(" LIMIT ").append(offset).append(", 1");
 
 		return sql.toString();
 	}