大约有 6,100 项符合查询结果(耗时:0.0352秒) [XML]

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How to vertical align an inline-block in a line of text?

...nline-block that will take on some unknown width and height. (It'll have a table inside it with content dynamically generated). Further, the inline-block should be placed inside a line of text, such as "my text (BLOCK HERE)". To make it look pretty, I'm trying to make the block be vertically cent...
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Tactics for using PHP in a high-load site

...lize your schemas. This means that rather than to have multiple relational tables, you should instead opt to have one big table. In general, joins are a waste of precious DB resources because doing multiple prepares and collation burns disk I/O's. Avoid them when you can. The trade-off here is ...
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Convert SQLITE SQL dump file to POSTGRESQL

... local database with a huge amount of data and need to transfer a specific table to the production database. 7 Answers ...
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The difference between fork(), vfork(), exec() and clone()

...s big. I presume this is because the kernel still has to copy all the page tables. – Martina Ferrari Mar 15 '16 at 3:04 4 ...
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What's the use of ob_start() in php?

... $lvs_html = "<div>01 - component header</div>" ; // <table ><tr>" ; include( "component_contents.php" ) ; $lvs_html .= "<div>03 - component footer</div>" ; // </tr></table>" ; return $lvs_html ; } ; //----------------------------...
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What are the pros and cons to keeping SQL in Stored Procs versus Code [closed]

... the SQL inline in C# and calling to the SQL Server DB. So I'm trying to establish which, for this particular project, would be best. ...
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Where can I download english dictionary database in a text format? [closed]

... not a dump file, but a MYSQL .sql script file The words are in WN_SYNSET table and the glossary/meaning in the WN_GLOSS table share | improve this answer | follow ...
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How do I import .sql files into SQLite 3?

...o, your SQL is invalid - you need ; on the end of your statements: create table server(name varchar(50),ipaddress varchar(15),id init); create table client(name varchar(50),ipaddress varchar(15),id init); share | ...
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#1071 - Specified key was too long; max key length is 767 bytes

... 767 bytes is the stated prefix limitation for InnoDB tables in MySQL version 5.6 (and prior versions). It's 1,000 bytes long for MyISAM tables. In MySQL version 5.7 and upwards this limit has been increased to 3072 bytes. You also have to be aware that if you set an index on a...
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Aggregate / summarize multiple variables per group (e.g. sum, mean)

... Using the data.table package, which is fast (useful for larger datasets) https://github.com/Rdatatable/data.table/wiki library(data.table) df2 <- setDT(df1)[, lapply(.SD, sum), by=.(year, month), .SDcols=c("x1","x2")] setDF(df2) # con...