hsqldb

HsqlException: data exception

由 北城以北 提交于 2019-12-19 05:01:32
问题 I am using hsqldb version 2.2.5 in my application sometimes I am getting org.hsqldb.HsqlException: data exception: string data, right truncation. So I want to know what are the possible reasons for that. I am not inserting any data like longvarchar in a varchar column. http://sourceforge.net/tracker/index.php?func=detail&aid=2993445&group_id=23316&atid=378131 I searched above link but could not get proper feedback. Given below the exception stack This exception is not happening frequently. So

Link a sequence with to an identity in hsqldb

由 这一生的挚爱 提交于 2019-12-18 21:55:26
问题 In PostgreSql, one can define a sequence and use it as the primary key of a table. In HsqlDB, one can still accomplish creating an auto-increment identity column which doesn't link to any user defined sequence. Is it possible to use a user defined sequence as the generator of an auto-increment identity column in HsqlDB? Sample sql in PostgreSql: CREATE SEQUENCE seq_company_id START WITH 1; CREATE TABLE company ( id bigint PRIMARY KEY DEFAULT nextval('seq_company_id'), name varchar(128) NOT

SQLite vs HSQLDB

由 …衆ロ難τιáo~ 提交于 2019-12-18 10:48:24
问题 What are the main differences between SQLite and HSQLDB ? There are lots of applications using both of them, but I don't really see any major difference. 回答1: SQLite is implemented in C, HSQL is implemented in Java. It should be more seamless and easy to integrate SQLite with an application project written in C or C++, whereas I would expect the HSQL technology is easier to integrate with a project written in Java. No doubt there are numerous other more subtle differences between these two

HSQL + Hibernate Exception: Wrong column type: Found: double, expected: float

由 爱⌒轻易说出口 提交于 2019-12-17 20:55:55
问题 I am using in-memory HSQL (HSQLDB) with Hibernate for all my unit tests, because it is very fast. I have a table with a column defined as follows: float qw; When hibernate starts, I get the following error: org.hibernate.HibernateException: Wrong column type in MyTable for column qw. Found: double, expected: float Why does it find double when the column is declared as float ? 回答1: This is happening due to a series of unfortunate events . The problem begins with the fact that HSQLDB does not

Internal HSQL database complains about privileges

由 假如想象 提交于 2019-12-17 19:15:02
问题 I'm setting up a standalone Java service with an in-process, in-memory HSQL database. Persistence.xml <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0"> <persistence-unit name="manager"> <class>tr.silvercar.data.entities.User</class> <properties> <property name="javax.persistence.jdbc.driver" value=

HSQL database user lacks privilege or object not found error

由 帅比萌擦擦* 提交于 2019-12-17 18:34:24
问题 I am trying to use hsqldb-2.3.4 to connect from Spring applicastion. I created data base using the following details Type : HSQL Database Engine Standalone Driver: org.hsqldb.jdbcDriver URL: jdbc:hsqldb:file:mydb UserName: SA Password: SA I created a table named ALBUM under "MYDB" schema In spring configuration file: <bean id="jdbcTemplate" class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate"> <constructor-arg ref="dbcpDataSource" /> </bean> <bean id="dbcpDataSource"

Run SQL script on JDBC connection, minimal approach

由 与世无争的帅哥 提交于 2019-12-17 16:53:45
问题 Long story short: I want to run a SQL script on an HSQLDB database. I want to follow a minimalistic approach, which means: Absolutely no manual parsing of SQL No additional dependencies except for general Utilities. I make the distinction here because, for example I refuse to pull in Ibatis or Hibernate which are larger scope frameworks, but I will accept an apache commons or guava type utils library. The library MUST BE AVAILABLE ON MAVEN. No small-time pet-project stuff. (EDIT 12/5/15) Must

多层次报表的性能优化方案

由 拈花ヽ惹草 提交于 2019-12-17 09:15:58
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 多层次报表是常见的报表形式，典型的如分组报表和主子报表。其中的关联运算（组与明细、主表和子表）由于有层次而不能直接在数据库中完成，需要在报表端完成。而报表端一般只能采用排序和遍历的方法实现关联，性能又比较差。 本文介绍的润乾报表可以利用层次数据集（需要结合集算器实现）在数据源计算过程中完成关联计算，并且将有层次的结果集直接传送给报表进行呈现，从而做到在关联计算中充分利用集算器的高效算法，达到优化性能的目标。 下面通过一个主子报表的实例看一下使用过程与效果。 报表描述 使用订单表和订单明细表，查询每个订单详情以及该订单下的订单明细，报表格式如下： 环境及数据描述 测试机型 ：Dell Inspiron 3420 CPU ：Intel Core i5-3210M @2.50GHz *4 RAM ：4G HDD ：西数 WDC(500G 5400 转 / 分) 操作系统 ：Win7(X64) SP1 JDK ：1.6 数据库 ：hsqldb 润乾报表版本 ：2018 表数据 表名 字段数 数据量 订单表 15 854 订单明细表 5 434315 实现步骤 编写计算脚本 首先使用集算器（专门用于数据计算，为报表提供数据源支持的工具）编写计算脚本（orders.dfx），完成数据计算并返回层次数据集。 A 1

Why is Hibernate adding schema name to Hsql functions?

由 青春壹個敷衍的年華 提交于 2019-12-13 19:21:30
问题 We have a legacy app which uses Hibernate 3.0.3. We do unit testing with HSQLDB. One of the queries that is generated by Hibernate looks like this: select transactio0_.REASON_ID as REASON1_0_, transactio0_.DESCRIPTION as DESCRIPT2_93_0_, transactio0_.REASON_NAME as REASON3_93_0_ from APPS.MTL_TRANSACTION_REASONS transactio0_ where transactio0_.REASON_ID=54 and transactio0_.NVL (transactio0_.disable_date, NOW() + 1 DAY) > NOW() Note that the schema name "transactio0_" is prepended to the NVL

New to HSQLDB working with Spring Application with JavaConfig

由 ∥☆過路亽．° 提交于 2019-12-13 19:09:56
问题 I am New to HSQLDB and working with Spring Application with JavaConfig. I want my example to setup a in memory database(HSQLDB) and insert one row. I think I have my stuff all in order but I don't know where to create the database and the tables. Below is my main.app code public class MainApp { private static final Logger LOGGER = getLogger(MainApp.class); @Autowired protected MessageService mService; public static void main(String[] args) { ApplicationContext context = new
订阅 hsqldb