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【问题】 现在有数据表”测试“，效果如下，要把第一行的数据转换成第二行开始的样子，请问怎样实现？ 房号 合同号 401、406、408、411、412、413、416 2013-15 401 ..
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【问题】 I have a MySQL column that is defined as text. The column, if not null, always contains a l ..
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【问题】 I need a list of user IDs (course_user_ids) that is currently stored in a single field of a ..
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【问题】 I am trying to extract certain records from a 4.5GB csv file and am running into some probl ..
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【问题】 I use Version: Luna Service Release 1 (4.4.1) Build id: 20140925-1800 Could you tell me how ..
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【问题】 Let’s say I have given data as string: +———-+ |Size | +———-+ |15X10 | |5X4 | |3 | |2X6X5 | ..
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【问题】 I’d like to extract certain snippets from a MySQL column which are bounded in some unique w ..
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【问题】 I want to: · read a few 100 GB from csv files > convert some columns to a specific forma ..
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【问题】 Can I relate 2 tables from different relational databases (In mysql db)? 【回答】 MySQL 配置多库关联运 ..
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【问题】 I have a text file of size 13 GB. Each new line of the file contains a table like row ..
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【问题】 i have a data table see as below . Per_Code in_out Date Time Type 1110263 1 2013-10-11 09:1 ..
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【问题】 I'm trying to compare two soccer players who played in the same team and I'm trying to know ..
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【问题】 Hello everyone, I have one query, would be great if anyone can help me out on this. I ..
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【问题】 I have a query that returns some summary records. For instance, loan amount, loan ter ..
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【问题】 Good evening, take much of a help. I need to create a SQL query for the following situation ..
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【问题】 如题，下面某表有 3 个字段： name url ..
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【问题】 是这样的,有一个物品清单表,物品清单有一个数量的字段,一般都是>1的数量值,现在需要分解在一个表里,把>1的数量值,按多少就生成多少条相同的记录,有什么高效的办法吗 物品 ..
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【问题】 有3个表，A，B，C。其中A表放其它表的表名，如何查询例如： A表： ID TableName 01 B 02 C 03 B B表： ID&n ..
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【问题】 could anyone please suggest a way to accomplish this. i have a table which consists o ..
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【问题】 I have a database of baseball plays with a PlayerID and a TypeID (the kind of play: double, ..
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【问题】 I have this data in my table and I want to sort it using the numbers in the data. Data unso ..
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【问题】 I am writing a program to read two files and then compare them word by word and line by lin ..
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【问题】 I have a CSV File, The contents are like this: Country,Player,Runs,ScoreRate,MatchDate,Week ..
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【问题】 I'm quite new to Java and programming in general (like a month of experience) and I have th ..
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【问题】 I am working with a csv file, and I want to extract two values in specific positions from e ..
