db2

How to efficiently remove all rows from a table in DB2

由 妖精的绣舞 提交于 2020-01-03 08:14:12
问题 I have a table that has something like half a million rows and I'd like to remove all rows. If I do simple delete from tbl , the transaction log fills up. I don't care about transactions this case, I do not want to rollback in any case. I could delete rows in many transactions, but are there any better ways to this? How to efficiently remove all rows from a table in DB2? Can I disable the transactions for this command somehow or is there special commands to do this (like truncate in MySQL)?

JdbcTemplate does not support Parameterized Query 'IN' case? Must by NamedParameterJdbcTemplate?

由 六眼飞鱼酱① 提交于 2020-01-02 10:25:07
问题 Aimed at preventing SQL injection attacks, all the SQL Statement code in my project should transformed to Parameterized Query. But I got a problem when the query condition includes a 'IN' case. Like this (Using DB2 database): String employeeId = 'D2309'; String name = "%brady%"; List<Integer> userRights = new ArrayList<Integer>(); userRights.add(1); userRights.add(2); userRights.add(3); String sql = "SELECT * FROM T_EMPLOYEE WHERE EMPLOYEE_ID = ? AND NAME LIKE ? AND RIGHT IN (?)";

How to extract numerical data from SQL result

由 丶灬走出姿态 提交于 2020-01-02 08:47:31
问题 Suppose there is a table "A" with 2 columns - ID (INT), DATA (VARCHAR(100)). Executing "SELECT DATA FROM A" results in a table looks like: DATA --------------------- Nowshak 7,485 m Maja e Korabit (Golem Korab) 2,764 m Tahat 3,003 m Morro de Moco 2,620 m Cerro Aconcagua 6,960 m (located in the northwestern corner of the province of Mendoza) Mount Kosciuszko 2,229 m Grossglockner 3,798 m // the DATA continues... --------------------- How can I extract only the numerical data using some kind of

Extra rows being received when matching pairs in SQL

由 故事扮演 提交于 2020-01-01 19:55:11
问题 I am attempting to match customers who have purchased the same item, ordered by the first customer id CID . The query produces correct results but I am getting approximately 37 more rows than I should be receiving. Upon inspection there appears to be some duplicates in this sense Customer A | Customer B Customer B | Customer A This only occurs for some matches but not others SELECT DISTINCT ca.name as CUSTOMERA, cb.name as CUSTOMERB FROM customer ca, customer cb INNER JOIN YRB_PURCHASE pur1

Db2 Driver/Datasource setup on wildfly: Failed to load module for driver [com.ibm]

由 折月煮酒 提交于 2020-01-01 11:34:23
问题 I am wanting to configure the data source for db2 on my wildfly server (Wildfly.8.0.0-Final and 8.1.0 as well.) and am running into some problems doing so. My research tells me this is a two step process install the drivers as a module in the %JBOSS_HOME%/modules/com/ibm/main dir. configure the datasources subsystem to include this module as a driver in your connection settings. So far I have installed the module under the following structure with the following module.xml: modules/ `-- com/ `

Db2 Driver/Datasource setup on wildfly: Failed to load module for driver [com.ibm]

由 [亡魂溺海] 提交于 2020-01-01 11:34:07
问题 I am wanting to configure the data source for db2 on my wildfly server (Wildfly.8.0.0-Final and 8.1.0 as well.) and am running into some problems doing so. My research tells me this is a two step process install the drivers as a module in the %JBOSS_HOME%/modules/com/ibm/main dir. configure the datasources subsystem to include this module as a driver in your connection settings. So far I have installed the module under the following structure with the following module.xml: modules/ `-- com/ `

db2: update multiple rows and field with a select on a different table

由 て烟熏妆下的殇ゞ 提交于 2020-01-01 08:59:10
问题 is it possible to increment the field a and b of a table (A.a and A.b) using the value c and d of a different table (B.c B.d) for all the row of A where A.x == B.z? I'm getting crazy with this query 回答1: DB2 and the SQL standard don't have a FROM clause in an UPDATE statement. So you have to clearly separate the steps to identify the rows to be modified and to compute the new value. . Here is an example: UPDATE TABLE A SET A.FLD_SUPV = ( SELECT B.FLD_SUPV FROM TABLEA A, TABLEB B, TABLEC C

java.lang.ClassNotFoundException: Class com.ibm.db2.jcc.DB2Driver not found in Worklight platform or project

由 雨燕双飞 提交于 2020-01-01 05:43:07
问题 I try to test an sql adapter that connects to db2 but I get the following result: java.lang.ClassNotFoundException: Class com.ibm.db2.jcc.DB2Driver not found in Worklight platform or project here is my code: <dataSourceDefinition> <driverClass>com.ibm.db2.jcc.DB2Driver</driverClass> <url>jdbc:db2://localhost:50000/WLTEST</url> <user>db2admin</user> <password>db2admin</password> </dataSourceDefinition> any idea what is going wrong? 回答1: Do you mean that your Worklight database is DB2-based? If

【Keepalived+MySQL】MySQL双主互备+高可用

由 痴心易碎 提交于 2020-01-01 02:18:37
一、基本信息说明 【DB1】 IP: 192.168.102.144 hostname: LVS-Real1 【DB2】 IP: 192.168.102.145 hostname: LVS-Real2 【VIP】 IP: 192.168.102.146 二、MySQL配置主主互备 1.配置DB1和DB2的/etc/my.cnf 【DB1】 [root@LVS-Real1 ~]# more /etc/my.cnf [client] port = 3306 socket = /tmp/mysql.sock [mysqld] user=mysql port = 3306 server_id = 1 #需保证唯一性 socket=/tmp/mysql.sock basedir =/usr/local/mysql datadir =/usr/local/mysql/data pid-file=/usr/local/mysql/data/mysqld.pid log-error=/usr/local/mysql/log/mysql-error.log log-bin=mysql-bin #开启二进制日志 relay-log=mysql-relay-bin replicate-wild-ignore-table=mysql.% #忽略复制mysql数据库下的所有对象，以下依次类推

keepalived+mysql实现双主高可用

由 你。 提交于 2020-01-01 02:17:47
环境： DB1：centos6.8、mysql5.5、192.168.2.204 hostname：bogon DB2：centos6.8、mysql5.5、192.168.2.205 hostname：localhost.localdomain vip：192.168.2.33 一、先配置DB1和DB2的双主热备 1、分别在DB1和DB2上安装mysql，我这里是用的ansible自动部署 [root@www ansible]# ansible-playbook lnmp.yml PLAY [new] ********************************************************************* TASK [setup] ******************************************************************* ok: [192.168.2.205] ok: [192.168.2.204] TASK [mysql : Create backup folder] ******************************************** ok: [192.168.2.204] ok: [192.168.2.205] TASK [mysql : create log folder]
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