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LIMIT 10..20 in SQL Server
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You example query runs fine but If I change the table name and order by col as below SELECT * FROM DimProduct ORDER BY ProductKey OFFSET 5 ROWS FETCH NEXT 5 ROWS ONLY It gives error Parse error at line: 4, column: 1: Incorrect syntax near 'OFFSET'
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When NOT to use Cassandra?
...zing log data, or any place where scanning huge, two-dimensional join-less tables is a requirement. Redis is built to provide In-Memory search for varieties of data structures like trees, queues, linked lists, etc and can be a good fit for making real-time leaderboards, pub-sub kind of system. Simil...
Algorithm to find top 10 search terms
...ue ID for each. This whole set of data can be loaded into memory as a hash table, consuming roughly 300MB memory. (We have implemented our own hash table. The Java's implementation takes huge memory overhead)
Each phrase then can be identified as an array of integers.
This is important, because s...
Amazon SimpleDB vs Amazon DynamoDB
...best parts of
the original Dynamo design (incremental scalability, predictable high
performance) with the best parts of SimpleDB (ease of administration
of a cloud service, consistency, and a table-based data model that is
richer than a pure key-value store).
Werner's Summary suggests Dyna...
Check if a Postgres JSON array contains a string
I have a table to store information about my rabbits. It looks like this:
4 Answers
4
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Have bash script answer interactive prompts [duplicate]
...[yes]`
`#Skip plural name checking [no]`
`#Use logged storage [no]`
`#Sort tables and views [yes]`
`#Export only table categorized []`
`#Enhance many to many detection [yes]`
`#Skip many to many tables [yes]`
`#Bundle namespace []`
`#Entity namespace []`
`#Repository namespace []`
`#Use automatic re...
Sample random rows in dataframe
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The data.table package provides the function DT[sample(.N, M)], sampling M random rows from the data table DT.
library(data.table)
set.seed(10)
mtcars <- data.table(mtcars)
mtcars[sample(.N, 6)]
mpg cyl disp hp drat wt ...
Inserting a Python datetime.datetime object into MySQL
I have a date column in a MySQL table. I want to insert a datetime.datetime() object into this column. What should I be using in the execute statement?
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Number of rows affected by an UPDATE in PL/SQL
...s with the number of line affected by the last DML operation:
say we have table CLIENT
create table client (
val_cli integer
,status varchar2(10)
)
/
We would test it this way:
begin
dbms_output.put_line('Value when entering the block:'||sql%rowcount);
insert into client
se...
ORA-00979 not a group by expression
...ave a database like this:
FOO BAR
0 A
0 B
and you run SELECT * FROM table GROUP BY foo. This means the database must return a single row as result with the first column 0 to fulfill the GROUP BY but there are now two values of bar to chose from. Which result would you expect - A or B? Or shou...