大约有 5,880 项符合查询结果(耗时:0.0302秒) [XML]

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Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)

...hree topping types: one type of cheese one type of meat one type of vegetable So we order two pizzas and choose the following toppings: Pizza Topping Topping Type -------- ---------- ------------- 1 mozzarella cheese 1 pepperoni meat 1 olives vegetable 2 ...
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SQL server query to get the list of columns in a table along with Data types, NOT NULL, and PRIMARY

... to write a query on SQL server to get the list of columns in a particular table, its associated data types (with length) and if they are not null. And I have managed to do this much. ...
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How do I move a table into a schema in T-SQL

I want to move a table into a specific Schema using T-SQL? I am using SQL Server 2008. 2 Answers ...
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Equivalent of varchar(max) in MySQL?

...are a varchar of the maximum row size, even if it's the only column in the table. mysql> CREATE TABLE foo ( v VARCHAR(65534) ); ERROR 1118 (42000): Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual. Yo...
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How to read the database table name of a Model instance?

Given a model's instance object, how can I get the database table's name? 1 Answer 1 ...
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SQL DELETE with INNER JOIN

There are 2 tables, spawnlist and npc , and I need to delete data from spawnlsit . npc_templateid = n.idTemplate is the only thing that "connect" the tables. I have tried this script but it doesn't work. ...
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CSS center text (horizontally and vertically) inside a div block

... Since they tend to be hacks or adding complicated divs... I usually use a table with a single cell to do it... to make it as simple as possible. Update for 2020: Unless you need make it work on earlier browsers such as Internet Explorer 10, you can use flexbox. It is widely supported by all cur...
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Find most frequent value in SQL column

How can I find the most frequent value in a given column in an SQL table? 9 Answers 9 ...
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What is the most efficient/elegant way to parse a flat table into a tree?

Assume you have a flat table that stores an ordered tree hierarchy: 14 Answers 14 ...
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CSS table column autowidth

... Works perfectly! (my case having table width 100% and no other columns have widths. Applied this to one column). Tested in IE7/8/9, Firefox 12 and Chrome 19. – marcovtwout Jun 20 '12 at 14:12 ...