exists

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update from one table to another if doesnt exist in the original table in sql server 2005

I have 2 tables with the same columns - T1, T2. I want to update table T1 columns from the columns that exist in T2 based on the key column: if the key column exists then 开发者_运维技巧update the res[详细]

2023-02-17 16:02 分类：问答
Tricky SQL Problem

I have a table like this ... KeySeqVal A1123 A4129 A9123 A10105 B3100 B6101 B12102 I want to find cases (like A,4) where the value(in this case 123) is the same before (in this case A,1) and aft[详细]

2023-02-17 02:17 分类：问答
Is EXISTS more efficient than COUNT(*)>0?

I\'m using MySQL 5.1, and I have a query that\'s roughly of the form: select count(*) from mytable where a = \"foo\" and b = \"bar\";[详细]

2023-02-15 21:59 分类：问答
PySVN - Determine if a repository exists

I\'m writing a small script that manages several SVN repositories. Users pass through the ID of t开发者_运维知识库he repository they want to change (the root of the repos are of the form https://www.m[详细]

2023-02-15 10:51 分类：问答
If element is visible do something to another element. Jquery

I have multiple containers like this <div class=\"container\"> <span> [详细]

2023-02-15 05:53 分类：问答
How to make a SUM with conditions?

I need to create an SQL query for the calculation of hours of employees who work for a specific customer (n°108538). We differentiate two types of counting: those who worked the whole week (37h50) an[详细]

2023-02-15 00:55 分类：问答
Insert based on two elements existing in a row MySQL

I\'m imagining that this is a simple question, but I\'m running into syntax issues I think. I have a table that has an event ID as primary key(eventID), a device ID that of what triggered the event,[详细]

2023-02-11 11:14 分类：问答
ColdFusion: do i need to use structKeyExists for every element of a deep struct?

Let\'s say i\'ve just parsed someone else\'s XML document which is a response to an API request. I want to know if a value nested deep inside exists. If my API request worked, it will be in the same p[详细]

2023-02-10 17:45 分类：问答
Android: Wait for object to appear

I cannot think of a proper way to wait for an object to appear. I am writing a camera app. After ta开发者_如何转开发king a picture, I am writing GPS Data into the exif tags. I have to wait for the loc[详细]

2023-02-10 02:55 分类：问答
How to test property existence and type based on NSString typed key?

In my quest to update a Core Data model within my iOS project, I\'m querying a server for JSON objects that correspond - to some extent - with the managed entities of my model. The end result I\'m str[详细]

2023-02-10 02:46 分类：问答