大约有 6,100 项符合查询结果(耗时:0.0328秒) [XML]

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Expand div to max width when float:left is set

... The best way is to use a simple 2 cols table instead of wasting time adding tons of CSS not-cross-browser-compatibles tricks – Marco Demaio Nov 23 '12 at 10:22 ...
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How do exceptions work (behind the scenes) in c++

...atching_functionv, .-_Z20my_catching_functionv .section .gcc_except_table,"a",@progbits .align 4 .LLSDA9: .byte 0xff .byte 0x0 .uleb128 .LLSDATT9-.LLSDATTD9 .LLSDATTD9: .byte 0x1 .uleb128 .LLSDACSE9-.LLSDACSB9 .LLSDACSB9: .uleb128 .LEHB0-.LFB9 .uleb128 .L...
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Nginx缓存解决方案:SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术

...request_uri_without_args = ngx.re.sub(ngx.var.request_uri, "\\?.*", "") table.unpack = table.unpack or unpack for index, rule in ipairs(phoenix["rule"]) do if type(rule["regex"]) == "string" then rule["regex"] = {rule["regex"], ""} end local regex, options = table.unp...
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Rails auto-assigning id that already exists

...to set the sequence for your company.id column to the highest value in the table with a query like this: SELECT setval('company_id_seq', (SELECT max(id) FROM company)); I am guessing at your sequence name "company_id_seq", table name "company", and column name "id" ... please replace them with th...
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Opposite of %in%: exclude rows with values specified in a vector

... If you look at the code of %in% function (x, table) match(x, table, nomatch = 0L) > 0L then you should be able to write your version of opposite. I use `%not in%` <- function (x, table) is.na(match(x, table, nomatch=NA_integer_)) Another way is: function (x,...
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Strings as Primary Keys in SQL Database [closed]

... key then you should probably use it. This all depends on the size of the table you're making it for and the length of the string that is going to be the primary key (longer strings == harder to compare). I wouldn't necessarily use a string for a table that has millions of rows, but the amount of p...
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搭建高可用mongodb集群(四)—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...需要分片的集合和片键 db.runCommand( { shardcollection : "testdb.table1",key : {id: 1} } ) 我们设置testdb的 table1 表需要分片,根据 id 自动分片到 shard1 ,shard2,shard3 上面去。要这样设置是因为不是所有mongodb 的数据库和表 都需要分片! ...
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How to Join to first row

... Excellent, that works; moving TOP 1 from derived table clause to join clause. – Ian Boyd Jan 11 '10 at 16:54 111 ...
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typecast string to integer - Postgres

I am importing data from a table which has raw feeds in Varchar, I need to import a column in varchar into a string column. I tried using the <column_name>::integer as well as to_number(<column_name>,'9999999') but I am getting errors, as there are a few empty fields, I need to retri...
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Insert current date in datetime format mySQL

...re the current time just use MYSQL's functions. mysql_query("INSERT INTO `table` (`dateposted`) VALUES (now())"); If you need to use PHP to do it, the format it Y-m-d H:i:s so try $date = date('Y-m-d H:i:s'); mysql_query("INSERT INTO `table` (`dateposted`) VALUES ('$date')"); ...