大约有 3,551 项符合查询结果（耗时：0.0187秒） [XML]
Schema for a multilanguage database
...DUCT has 1 million rows, T_PRODUCT_tr would have 2 million.Would it reduce sql efficiency much?
– Mithril
Feb 14 '14 at 3:22
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How can I suppress column header output for a single SQL statement?
I'm executing some SQL statements in batch (using the mysql command-line binary). I want one of my several SELECT statements to not print the column headers, just the selected records. Is this possible?
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What should every developer know about databases? [closed]
...tent data associated with just one application. Building a database for MySQL, or Access, or SQL Server has become so routine that databases have become almost a routine part of an ordinary application. Sometimes, that initial limited mission gets pushed upward by mission creep, as the real value ...
How do you perform a CROSS JOIN with LINQ to SQL?
How do you perform a CROSS JOIN with LINQ to SQL?
5 Answers
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“CASE” statement within “WHERE” clause in SQL Server 2008
...ng with a query which contains "CASE" statement within "WHERE" clause. But SQL Server 2008 is giving some errors while executing it. Can anyone please help me with the correct query? Here is the query:
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SQL Server Insert if not exists
...akes no difference whatsoever because it's being used in an EXISTS clause. SQL Server will always optimize it and has been doing it for ages. Since I'm very old I usually write these queries as EXISTS (SELECT 1 FROM...) but it is not needed anymore.
– Loudenvier
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Cannot use a CONTAINS or FREETEXT predicate on table or indexed view because it is not full-text ind
I am getting following error in my SQL server 2008 R2 database:
7 Answers
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Convert SQLITE SQL dump file to POSTGRESQL
I've been doing development using SQLITE database with production in POSTGRESQL. I just updated my local database with a huge amount of data and need to transfer a specific table to the production database.
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SQL Server add auto increment primary key to existing table
...ould recommend to always explicitly specify the seed and increment in your SQL scripts - especially for a larger site. It's just good practice.
– marc_s
Oct 28 '15 at 13:59
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What's the difference between IQueryable and IEnumerable
...t of as "is the 'Age' property > 18".
This allows things like LINQ-to-SQL to exist because they can parse the expression tree and convert it into equivalent SQL. And because the provider doesn't need to execute until the IQueryable is enumerated (it implements IEnumerable<T>, after all)...