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How to COUNT rows within EntityFramework without loading contents?
I'm trying to determine how to count the matching rows on a table using the EntityFramework.
7 Answers
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unresolved reference to object [INFORMATION_SCHEMA].[TABLES]
I've created a UDF that accesses the [INFORMATION_SCHEMA].[TABLES] view:
3 Answers
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Maximum number of records in a MySQL database table
What is the upper limit of records for MySQL database table. I'm wondering about autoincrement field. What would happen if I add milions of records? How to handle this kind of situations?
Thx!
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Why does Java switch on contiguous ints appear to run faster with added cases?
...ed to sparse), the generated bytecode for your various tests uses a switch table (bytecode instruction tableswitch).
However, once the JIT starts its job and compiles the bytecode into assembly, the tableswitch instruction does not always result in an array of pointers: sometimes the switch table i...
Display / print all rows of a tibble (tbl_df)
...ated by the dplyr data frame manipulation package in R. It prevents long table outputs when accidentally calling the data frame.
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String replacement in batch file
...ABLEDELAYEDEXPANSION switch set.
setlocal ENABLEDELAYEDEXPANSION
set word=table
set str="jump over the chair"
set str=%str:chair=!word!%
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How to count TRUE values in a logical vector
...values.
See for example:
z <- c(TRUE, FALSE, NA)
sum(z) # gives you NA
table(z)["TRUE"] # gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm = TRUE) # best way to count TRUE values
(whi...
Automatically create an Enum based on values in a database lookup table?
...and subsequently use its values in C# based on values in a database lookup table (using enterprise library data layer)?
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Difference between one-to-many and many-to-one relationship
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From this page about Database Terminology
Most relations between tables are one-to-many.
Example:
One area can be the habitat of many readers.
One reader can have many subscriptions.
One newspaper can have many subscriptions.
A Many to One relation is the same as o...
How to write UPDATE SQL with Table alias in SQL Server 2008?
...ment on SQL Server is as follows:
UPDATE Q
SET Q.TITLE = 'TEST'
FROM HOLD_TABLE Q
WHERE Q.ID = 101;
The alias should not be necessary here though.
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