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Do you use source control for your database items? [closed]
...r, with a bit of work, you could do the same thing. Any DDL changes (ALTER TABLE, etc.) can be stored in text files. Keep a numbering system (or a date stamp) for the file names, and apply them in sequence.
Rails also has a 'version' table in the DB that keeps track of the last applied migration. Y...
Generate a random number in the range 1 - 10
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Actually I don't know you want to this.
try this
INSERT INTO my_table (my_column)
SELECT
(random() * 10) + 1
;
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How do I perform the SQL Join equivalent in MongoDB?
...s bear in mind that MongoDB collections are not equivalent to relational tables; each serves a unique design objective. A normalized table provides an atomic, isolated chunk of data. A document, however, more closely represents an object as a whole. In the case of a social news site, it can be argue...
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...
Error renaming a column in MySQL
How do I rename a column in table xyz ? The columns are:
9 Answers
9
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How to vertically center a inside a div? [duplicate]
... @Blender Heh, though therein references a third option: display:table-cell; vertical-align:middle (along with a display:table-row parent). :) But no, you can be sure that I would never advocate using HTML table elements for layout.
– Phrogz
Dec 5 '10...
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...
How to put more than 1000 values into an Oracle IN clause [duplicate]
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Put the values in a temporary table and then do a select where id in (select id from temptable)
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NameValueCollection vs Dictionary [duplicate]
...ionary<(Of <(TKey, TValue>)>)
class is implemented as a hash table.
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NULL values inside NOT IN clause
...s one using a not in where constraint and the other a left join . The table in the not in constraint had one null value (bad data) which caused that query to return a count of 0 records. I sort of understand why but I could use some help fully grasping the concept.
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