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How do I get the current time zone of MySQL?
Anyone knows if there is such a function in MySQL?
17 Answers
17
...
os.walk without digging into directories below
... os.path.isdir(some_dir)
num_sep = some_dir.count(os.path.sep)
for root, dirs, files in os.walk(some_dir):
yield root, dirs, files
num_sep_this = root.count(os.path.sep)
if num_sep + level <= num_sep_this:
del dirs[:]
It works just like os.walk, but y...
Error renaming a column in MySQL
...
The standard Mysql rename statement is:
ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name
CHANGE [COLUMN] old_col_name new_col_name column_definition
[FIRST|AFTER col_name]
for this example:
ALTER TABLE xyz CHANGE manufacurerid manuf...
When to use Hadoop, HBase, Hive and Pig?
...ru some SQL like language
To replace daily aggregation data generated thru MySQL with Hive
Build Custom reports thru queries in Hive
Architecture Options
I benchmarked the following options:
Hive+HDFS
Hive+HBase - queries were too slow so I dumped this option
Design
Daily log Files were tr...
What is the difference between sql and mysql [closed]
...o databases and I was wondering: What is the difference between SQL and MySQL ?
5 Answers
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MySql: Tinyint (2) vs tinyint(1) - what is the difference?
I knew boolean in mysql as tinyint (1) .
4 Answers
4
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创业公司如何实施敏捷开发 - 资讯 - 清泛网 - 专注C/C++及内核技术
创业公司如何实施敏捷开发说起敏捷开发，并不是因为敏捷而敏捷。这几年的敏捷开发已经被很多敏捷咨询服务商神话了，这个东西并不是神器，实施了就可以解决所有软件公...说起敏捷开发，并不是因为敏捷而敏捷。这几年的...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
... but the values you insert don't map to a partition.
If you use REPLACE, MySQL actually does a DELETE followed by an INSERT internally, which has some unexpected side effects:
A new auto-increment ID is allocated.
Dependent rows with foreign keys may be deleted (if you use cascading foreign ke...
Null vs. False vs. 0 in PHP
...or a data value that doesn't exist in the database or is unknown. See dev.mysql.com/doc/refman/5.0/en/working-with-null.html or en.wikipedia.org/wiki/Null_%28SQL%29.
– Eli
Dec 5 '12 at 3:39
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融资千万美元后的足记要如何应对“爆款后遗症”？ - 资讯 - 清泛网 - 专注C...
融资千万美元后的足记要如何应对“爆款后遗症”？“爆红”近半年后，足记的办公室仍然设在上海愚园东路的上海创客中心这个众创空间里。两间不起眼的办公室塞得满满当当。门口摆放的一个巨大的泡沫字“足记Fotoplace” ...