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sql Questions

votes
Andrew G. Johnson   2018-06-19 13:49

How can I prevent SQL injection in PHP?

If user input is inserted without modification into an SQL query, then the application becomes vulnerable to SQL injection, like in the following example: $unsafe_variable = $_POST['user_input']; ...
warren   2018-06-21 16:17

How to 'insert if not exists' in MySQL?

I started by googling, and found this article which talks about mutex tables. I have a table with ~14 million records. If I want to add more data in the same format, is there a way to ensure the ...
Richard Knop   2018-06-23 05:16

SQL injection that gets around mysql_real_escape_string()

Is there an SQL injection possibility even when using mysql_real_escape_string() function? Consider this sample situation. SQL is constructed in PHP like this: $login = mysql_real_escape_string(...
Malax   2018-08-25 09:14

How to execute IN() SQL queries with Spring's JDBCTemplate effectivly?

I was wondering if there is a more elegant way to do IN() queries with Spring's JDBCTemplate. Currently I do something like that: StringBuilder jobTypeInClauseBuilder = new StringBuilder(); for(int i ...
Tommaso Taruffi   2018-09-02 07:33

Hibernate show real SQL [duplicate]

if I set <property name="show_sql">true</property> in my hibernate.cfg.xml configuration file in the console I can see the SQL. But it's not real SQL... Can I see the SQL code that will ...
craftsman   2018-09-02 08:45

How to print a query string with parameter values when using Hibernate

Is it possible in Hibernate to print generated SQL queries with real values instead of question marks? How would you suggest to print queries with real values if it is not possible with Hibernate API?...
Jaylen   2018-09-21 18:52

How to import an SQL file using the command line in MySQL?

I have a .sql file with an export from phpMyAdmin. I want to import it into a different server using the command line. I have a Windows Server 2008 R2 installation. I placed the .sql file on the C ...
Lion King   2018-09-21 22:06

What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN? [duplicate]

What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN in MySQL?
some Folk   2018-09-21 22:35

How to reset AUTO_INCREMENT in MySQL?

How can I reset the AUTO_INCREMENT of a field? I want it to start counting from 1 again.
Dean Rather   2018-09-22 00:15

Can I concatenate multiple MySQL rows into one field?

Using MySQL, I can do something like: SELECT hobbies FROM peoples_hobbies WHERE person_id = 5; My Output: shopping fishing coding but instead I just want 1 row, 1 col: Expected Output: shopping, ...