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What is the advantage of using heredoc in PHP? [closed]
... avoiding quoting issues. Back in the day I used to use them to construct SQL queries:
$sql = <<<SQL
select *
from $tablename
where id in [$order_ids_list]
and product_name = "widgets"
SQL;
To me this has a lower probability of introducing a syntax error than using quotes:
$sql =...
How can I run just the statement my cursor is on in SQL Server Management Studio?
...is not possible."
Edit:
Here is how I was able to do this:
1 - Download SQL Developer
2 - Download the jTDS driver
3 - Follow these instructions to add that driver to SQL Developer
4 - Connect to SQL Server using SQL Developer (cool!)
5 - Run it and life is good
...
使用std::string作为std::map的key出错解决 - C/C++ - 清泛网 - 专注C/C++及内核技术
使用std::string作为std::map的key出错解决c: program files (x86) microsoft visual studio 11.0 vc include xstddef(180): error C2784: bool std::operator <(const st...c:\program files (x86)\microsoft visual studio 11.0\vc\include\xstddef(180): error C2784: “bool std::operator <(const std:...
How to get script of SQL Server data? [duplicate]
I'm looking for a way to do something analogous to the MySQL dump from SQL Server. I need to be able to pick the tables and export the schema and the data (or I can export the schema via SQL Server Management Studio and export the data separately somehow).
...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...的逻辑。上手很容易，但是由于代码块提供的功能有限，使用比较单一，在开发上有很大的局限性，但是它提供了拓展Extension特性，开放了源码，使得开发者可以根据自己的需要，自定义开发原生组件实现不了的、更加强大的功...
How to write UPDATE SQL with Table alias in SQL Server 2008?
I have a very basic UPDATE SQL -
2 Answers
2
...
Is the SQL WHERE clause short-circuit evaluated?
Are boolean expressions in SQL WHERE clauses short-circuit evaluated
?
14 Answers
1...
Difference between View and table in sql
What is the main difference between view and table in SQL. Is there any advantage of using views instead of tables.
7 Answe...
SQL Joins Vs SQL Subqueries (Performance)?
... and an explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (WHERE x=Y OR x=Z OR...).
As with ALL THINGS SQL though, your mileage may vary. The speed will depend a lot on indexes (do you have indexes on both I...
SQL Server dynamic PIVOT query?
...
Dynamic SQL PIVOT:
create table temp
(
date datetime,
category varchar(3),
amount money
)
insert into temp values ('1/1/2012', 'ABC', 1000.00)
insert into temp values ('2/1/2012', 'DEF', 500.00)
insert into temp values ...