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SET NOCOUNT ON usage
...een using SET NOCOUNT ON forever, but marc_s pointed out the limitation of SQLDataAdapter in the other question.
– gbn
Oct 10 '09 at 12:26
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
...id
GROUP BY boss.id
But they cannot do that (COUNT(tableNameHere)) since SQL standard permits naming a field with the same name as its table name:
CREATE TABLE fruit -- ORM-friendly name
(
fruit_id int NOT NULL,
fruit varchar(50), /* same name as table name,
and let's say, someon...
What is an MDF file? [closed]
...
SQL Server databases use two files - an MDF file, known as the primary database file, which contains the schema and data, and a LDF file, which contains the logs. See wikipedia. A database may also use secondary database file...
Oracle find a constraint
...in a table declaration. Or indeed a primary or unique key. For example:
SQL> create table t23 (id number not null primary key)
2 /
Table created.
SQL> select constraint_name, constraint_type
2 from user_constraints
3 where table_name = 'T23'
4 /
CONSTRAINT_NAME ...
How to switch databases in psql?
In MySQL , I used use database_name;
12 Answers
12
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Create SQLite Database and table [closed]
...pplication code, I would like to create and then interact with one or more SQLite databases.
1 Answer
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Handling List-types with Esqueleto
...asking for.
For your case I would insistently advise you to use a classic SQL queries. You can run n+1 queries, but do that only if it is rare and not often usable function, that for example prepares cached data (based on your variables names I suppose that it may not be heavy used and it worth a t...
Oracle中translate与replace的使用 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
... 三个参数中有一个是空，返回值也将是空值。
举例：SQL> select translate('abcdefga','abc','wo') 返回值 from dual;
返回值
-------
wodefgw
分析：该语句要将'abcdefga'中的'abc'转换为'wo',
由于'abc'中'a'...
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
... Having a problem with a similar situation in PhpMyAdmin over MySQL. In my case, the source and destination columns are in the same table, but record selection is based on the other table. The "SELECT" version of the query works, but the UPDTATE statement throws a syntax error at "FROM"...
Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
I'm just getting started learning 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 SQL...