varchar
what advantage does TEXT have over varchar when required length <8000?
SQL Server Text type vs. varchar data type: As a rule of thumb, if you ever need you text value to exceed 200[详细]
2023-03-28 07:41 分类：问答Does it make sense to use a varchar column as foreignkey reference?
Given two tables books and authors where each of them already have a unique key which is of varchar type which identifys them throughout my ecosystem. Does it make sense to use those keys as Foreignke[详细]
2023-03-27 22:43 分类：问答SQL: long varchar and impact on peformance
I am working with a database which is very slow. We use ASP.NET to access/populate the database. I am new to the database and I found that some of the thing are not properly done. I want to get a more[详细]
2023-03-26 18:40 分类：问答What happen's to content inside in rows on columns defined as varchar, when illegally reduced length?
Certainly a noobish question, but I got to ask: :-) Assuming a column of type varchar and length 255 and the longest string stored in a row at this开发者_如何学编程 column shold have length 200. What[详细]
2023-03-24 14:25 分类：问答sql string extraction
I have a column in sql server 2008 which is a varchar(255). The column is full of \'measurements\' and there are around 15,000 records.[详细]
2023-03-24 08:24 分类：问答What does MySQL converting varchar to char?
When we add a new table, we made a mistake : a field was a varchar(255), but we have to write join queries.[详细]
2023-03-21 20:22 分类：问答Consistency issue SQL Server
I have a central database. Applications sit on multiple servers and push data to the server. Now, there is one scenario where in a string data which is longer than the maximum capacity of varchar. So[详细]
2023-03-20 22:02 分类：问答Convert variously formatted dates to mysql DATE format to save in database PHP
Ok, so I have a bit of a mystery on my hands.I hve a bunch of dates in all different, mostly American, formats.I need to add them to a mysql database in a DAT开发者_运维技巧E field.So I wrote the blow[详细]
2023-03-20 13:42 分类：问答Oracle aggregated query
ColA ColB ColC ColD data1 rata1 TTest1 data1 rata3 FTest2 data1 rata2 TTest1 data2 rata1 TTest1 data2 rata3 TTest1[详细]
2023-03-19 18:19 分类：问答Oracle query for getting desired output
ColAColBColCColD data1rata1TTest1 data1rata3FTest2 data1rata2TTest1 data2rata1TTest1 data2rata3TTest1 data3rata4TTest1开发者_JAVA技巧[详细]
2023-03-19 12:32 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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