derby

问题 In DERBY, I have a table which name is TEST1. I can run this code perfectly. CREATE TABLE Table1 AS (SELECT * FROM TEST1) with no data But I can't run this code and derby. CREATE TABLE Table1 AS (SELECT ..... FROM sysibm.sysdummy1) with no data editor throws this error : ERROR: The CREATE TABLE statement does not include a column list. ps: "SELECT ..... FROM sysibm.sysdummy1" works with no problem. How can I create a table with using "select 'columns' from sysibm.sysdummy1" ? 回答1: in my first

问题 I'm new to java db, before this I've always used Microsoft SQL for database programming. I used SQL Express and Management Studio for database testing and creation. Now i want to use java db instead, i'm confused about some things about Derby: What platform i should use to test my database queries as i used Management Studio for SQL. Secondly, i'm confused about formatting Dates in Derby as i used Set DateFormat function in SQL to format dates. I'm using TimeStamp Datatype and i want my date

问题 Background: I am about to enhance an existing application. This application uses already derby. For an other use case I want to use derby, too. Is it possible to run embedded AND client server derby database at the same time? 回答1: Yes, you can do this. We call this "Embedded Server", and you can find more details here: http://db.apache.org/derby/docs/10.10/adminguide/cadminov17524.html 回答2: Not it is not possible to run the derby in both the modes at the same time. But if you run derby in the

问题 having a problem yesterday that i couldn't connect to the derby database (most likely due to persistence.xml issues) I have been guided to modify my persistence.xml so that it contains two additional poperties; <property name="eclipselink.ddl-generation" value="create-tables" /> <property name="eclipselink.ddl-generation.output-mode" value="database" /> Having added them I don't get faced with bunch of errors such as SCHEMA "xx" doesn't exist or Unknown entity bean class: class model.Userbay,

问题 The following Query1 is fine with Oracle. I want the same functionality to be carried out in Derby. I got the Query2, as one of the suggestion to be followed here. But still that is throwing the Error1. Please somebody help me out to get rid of this. What should I do? Query1: Select f.folder_id, f.identifier From FOLDER f, STOREENT se Where f.type = 'AttributeFolder' And se.storeent_id = f.storeent_id And se.identifier = 'Global_CAS' And f.identifier = 10051 connect by prior f.folder_id = f

问题 I am aware that there are tons of questions around about this problem but I tried every ungodly way to fix it, still no result. I have created a "test" Derby database within Netbeans. Everything works fine, I can execute SQL commands, alter tables and all within application. But i have to start the server everytime when I open netbeans. But I want my application's itself to start the server with codes. I guess i tried everything to do it. Class.forName("org.apache.derby.jdbc.EmbeddedDriver");

问题 I'm trying to connect with hive via jdbc but it gives me the following exception java.sql.SQLException: org.apache.thrift.transport.TTransportException I already have running hadoop and derby. By the console of hive (in linux) I can work but once I try it for the project in java it does not work Class.forName("org.apache.hadoop.hive.jdbc.HiveDriver"); Connection co = DriverManager.getConnection("jdbc:hive://localhost:9000/almacendb", "",""); 来源： https://stackoverflow.com/questions/50688347

问题 I am getting this: SQLDataException:"java.sql.SQLDataException: An attempt was made to get a data value of type 'VARBINARY' from a data value of type 'BLOB' at org.apache.derby.client.am.SQLExceptionFactory.getSQLException(Unknown Source) ~[derbyclient-10.12.1.1.jar:na]" I would appreciate if anyone has insights on this. 回答1: This is issue is resolved after doing following: @Basic @Column(name = "PARSED_DATA") @Lob public byte[] getParsedData() { return parsedData; } Since, table column is

问题 We are using Apache Derby 10.5.3.0_1 and hbm2ddl with Hibernate 3.3.x I get the following constraints error while pre-loading the SQL on an embedded derby database. If I remove the primary key(id) from the create table sql, it's able to create the table. Not sure what the problem is over here. create table user_flow (id integer not null generated always as identity unique, creation_date timestamp not null, name varchar(255), primary key (id)); [INFO] Constraints 'SQL100219175052781' and

问题 This is the question I'm trying to answer... What are the team names of all teams who had one and only one player appear in 145 or more games? Here is my solution. SELECT name From Teams WHERE teamID IN (SELECT original.teamID FROM Appearances original WHERE teamID Not In (SELECT one.teamID FROM Appearances one, Appearances two Where (one.teamID = two.teamID) AND (one.playerID <> two.playerID) AND (one.GS > 144) AND (two.GS > 144))); This works, but I'm wondering if there is a cleaner/more