Oracle

Pagination custom query fetch first N rows error [duplicate]

由 瘦欲@ 提交于 2021-02-11 13:41:33
问题 This question already has answers here : How ROWNUM works in pagination query? (3 answers) How do I limit the number of rows returned by an Oracle query after ordering? (15 answers) SQL (ORACLE): ORDER BY and LIMIT [duplicate] (1 answer) Alternatives to LIMIT and OFFSET for paging in Oracle [duplicate] (4 answers) Closed 11 months ago . I have such a long query like this in Oracle 10g (needed for custom pagination). SELECT * FROM ( SELECT FILTERED_ORDERED_RESULTS.*, COUNT(1) OVER() TOTAL

Ubuntu 16.04安装JDK（转载）

由 可紊 提交于 2021-02-11 13:40:17
1.简单的安装方法 安装JDK的最简单方法应该就是使用apt-get来安装了，但是源一般是OpenJDK，如果需要安装 Oracle 的JDK这种方法就不合适了，直接跳过看下面的章节。 　 1.使用ctrl+alt+t打开终端，你可以添加一个含有OpenJDK源的仓库，一般是不需要，因为一般都有。 　　 备份原始源文件：cp /etc/apt/sources.list /etc/apt/sources.list.bak.1 　　 vim /etc/apt/sources.list 　　 修改里面的源就行了。 2.更新系统安装包缓存，并且安装OpenJDK8 　　 sudo apt-get update 　　 sudo apt-get install openjdk-8-jdk 　 3.如果你系统中存在多个版本的JDK，使用下列命令设置一个默认的JDK 　　 sudo update-alternatives --config java 　　 sudo update-alternatives --config javac 　　 输入选择的java版本的编号 　 4.最后检查当前的java版本查看是否编译成功 　　 java -version 2 手动安装oracle JDK 1.去oracle官网下载, 链接点此 。也可以使用wget http://download.oracle

ORA-00942: table or view does not exist with Spring JDBC Template in Spring Boot

由 老子叫甜甜 提交于 2021-02-11 13:38:09
问题 I'm getting a weird ORA-00942: table or view does not exist exception while trying to execute database code via Spring JDBC template: 2019-12-26 22:01:36.863[0;39m [31mERROR[0;39m [35m12232[0;39m [2m---[0;39m [2m[ctor-http-nio-3][0;39m [36ma.w.r.e.AbstractErrorWebExceptionHandler[0;39m [2m:[0;39m [ca8305eb] 500 Server Error for HTTP GET "/exs/acs/accounts-links?limit=20&q=632626&showActive=false&systemName=IMMS" org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad

Performance tuning a DECODE() statement in a WHERE clause

由 ＊爱你＆永不变心＊ 提交于 2021-02-11 13:38:04
问题 I re-wrote a query to reduce the time it takes to pick the records. But still I see that there is a small tuning that needs to be done in the decode line as the cost is high. Can someone please let me know if the same query can be re-written without the decode functionality? The purpose of removing the decode function would be to use the index in v_id column. What I have tried so far. Tried creating a function index (Knowing that bind variables cannot be used) and it failed. Have tried using

Merge two tables and find overlapping dates and Gaps

由 前提是你 提交于 2021-02-11 13:26:48
问题 I would like to solve below scenarios for ID 100 & 101 as given output using oracle Analytical functions. any ideas? TABLE A: ID ValidFrom ValidTo 100 1/1/2009 12/31/2010 100 1/1/2011 3/31/2012 101 8/1/2013 7/31/2014 101 8/1/2014 8/31/2014 TABLE B ID ValidFrom ValidTo 100 11/1/2008 12/31/2011 100 2/1/2012 2/29/2012 101 8/1/2013 6/30/2014 101 7/1/2014 8/31/2014 OUTPUT: ID ValidFrom ValidTo 100 11/1/2008 12/31/2008 100 1/1/2009 12/31/2010 100 1/1/2011 12/31/2011 100 1/1/2012 1/31/2012 100 2/1

Merge two tables and find overlapping dates and Gaps

由 China☆狼群 提交于 2021-02-11 13:25:28
问题 I would like to solve below scenarios for ID 100 & 101 as given output using oracle Analytical functions. any ideas? TABLE A: ID ValidFrom ValidTo 100 1/1/2009 12/31/2010 100 1/1/2011 3/31/2012 101 8/1/2013 7/31/2014 101 8/1/2014 8/31/2014 TABLE B ID ValidFrom ValidTo 100 11/1/2008 12/31/2011 100 2/1/2012 2/29/2012 101 8/1/2013 6/30/2014 101 7/1/2014 8/31/2014 OUTPUT: ID ValidFrom ValidTo 100 11/1/2008 12/31/2008 100 1/1/2009 12/31/2010 100 1/1/2011 12/31/2011 100 1/1/2012 1/31/2012 100 2/1

ORACLE APEX - Set up a Button to populate a textfield

由 感情迁移 提交于 2021-02-11 13:22:14
问题 I have a button which I would like to take the Input text field called P7_INPUT and Divide ( / ) it by 2000 and pop it into the P7_OUTPUT Users enters say 3000 into P7_INPUT field and pressed the Button then in the P7_OUTPUT is will show the value of 1.5 回答1: Right-click on the :P7_INPUT and select Create Dynamic Action. Set the following properties: Event: Key Release Selection Type: Items(s) Item: P7_INPUT Right-click the dynamic action and select either Create TRUE Action. Set the

ORACLE APEX - Set up a Button to populate a textfield

由 走远了吗. 提交于 2021-02-11 13:21:39
问题 I have a button which I would like to take the Input text field called P7_INPUT and Divide ( / ) it by 2000 and pop it into the P7_OUTPUT Users enters say 3000 into P7_INPUT field and pressed the Button then in the P7_OUTPUT is will show the value of 1.5 回答1: Right-click on the :P7_INPUT and select Create Dynamic Action. Set the following properties: Event: Key Release Selection Type: Items(s) Item: P7_INPUT Right-click the dynamic action and select either Create TRUE Action. Set the

分享5个免费的在线 SQL 数据库环境，简直太方便了！

由 拜拜、爱过 提交于 2021-02-11 13:18:11
关注我 们, 设为星标,每天7:30不见不散,架构路上与您共享 回复" 架构师 "获取资源 今天给大家分享几个在线的免费 SQL 运行环境，也就是在线数据库。这些网站可以帮助我们快速运行一些 SQL 语句的测试或者验证，同时还可以在网络上进行分享，关键不需要自己安装数据库。 SQL Fiddle SQL Fiddle 提供了 MySQL、Oracle、PostgreSQL、SQLite 以及 SQL Server 数据库环境，使用时无需注册。 其中，左侧文本框用于输入初始化语句创建表结构和数据，点击“Build Schema📥”运行；也可以通过“Text to DDL”将格式化文本转换为 DDL 语句。右侧文本框用于输入 SQL 语句，点击“Run SQL▶️”执行，执行结果显示在页面下方；“Run SQL▶️”可以选择输出结果的格式，包括表格、普通文本 以及 Markdown 三种格式。 另外，复制网页地址可以分享本次测试的数据和结果，以上截图的地址为：http://sqlfiddle.com/#!9/a6c585/1。 DB Fiddle DB Fiddle 提供了 MySQL、PostgreSQL 以及 SQLite 数据库的 最新版本 ，使用时无需注册，同时也提供了付费版本。 其中，最左侧文本框可以输入本次测试的标题和描述。中间文本框用于输入初始化语句，点击“▶️Run

Oracle SQL : how to find just record from a group

由 ぐ巨炮叔叔 提交于 2021-02-11 13:13:48
问题 I have a table where there is a PrimaryKey, Foreign Key. I just want to find the list of one Primary per Foreign Key. Example I need a query that returns only Primary Keys (1 or 2 or 3) and (4 or 5) or (6 or 7 or 8) Essentially 1,4 and 6. How can I get just one PK for each Foreign key 回答1: Use aggregation: select foreignKey, min(primaryKey) from t group by foreignKey; If you want a random value, you can use the keep syntax: select foreignKey, min(primaryKey) keep (dense_rank first order by
订阅 Oracle