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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
I tried this in mysql:
14 Answers
14
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Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
... SQLite . It would be nice to be able to see the details for a table, like MySQL's DESCRIBE [table] . PRAGMA table_info [table] isn't good enough, as it only has basic information (for example, it doesn't show if a column is a field of some sort or not). Does SQLite have a way to do this?
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How to convert an image to base64 encoding?
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Here is the code for upload to encode and save it to the MySQL
if (!isset($_GET["getfile"])) {
if ($_FILES["file"]["error"] > 0) {
echo "Error: " . $_FILES["file"]["error"] . "<br>";
} else {
move_uploaded_file($_FILES["file"]["tmp_name"], $_FILES[...
MySQL Workbench: How to keep the connection alive
Error Code: 2013. Lost connection to MySQL server during query
9 Answers
9
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海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...对于结果的分析。分析前我们需要对这些数据去除重复，如何选择和设 通过 采集系统 我们采集了大量文本数据，但是文本中有很多重复数据影响我们对于结果的分析。分析前我们需要对这些数据去除重复，如何选择和设计文...
Is there a Max function in SQL Server that takes two values like Math.Max in .NET?
...he "best answer" because:
It doesn't require complicating your code with UNION's, PIVOT's,
UNPIVOT's, UDF's, and crazy-long CASE statments.
It isn't plagued with the problem of handling nulls, it handles them just fine.
It's easy to swap out the "MAX" with "MIN", "AVG", or "SUM". You can use any ...
MySQL Query GROUP BY day / month / year
...ecord_date), MONTH(record_date)
Check out the date and time functions in MySQL.
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In php, is 0 treated as empty?
...sset($var) && $var != 0){ Do Something} ??
– mysqllearner
Feb 8 '10 at 9:22
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@mysql For ...
Get the new record primary key ID from MySQL insert query?
Let's say I am doing a MySQL INSERT into one of my tables and the table has the column item_id which is set to autoincrement and primary key .
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How do MySQL indexes work?
I am really interested in how MySQL indexes work, more specifically, how can they return the data requested without scanning the entire table?
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