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Full Discussion: Syntax Problem in Query
Top Forums Programming Syntax Problem in Query Post 302393743 by gregarion on Tuesday 9th of February 2010 12:48:13 PM
Old 02-09-2010
Syntax Problem in Query

Hey guys, i am having a problem in my query statement. I am using Mysql in Netbeans and c++.


What i am trying to do is for the user to enter a certain value and then the program will store the value into the database...

Code:
string NewMovie ;

Cout <<" Enter your new movie  : " << endl ; 
 cin << NewMovie ;

Basically, the person will enter a new movie(in this case Avatar) and the input will be saved to a string called NewMovie.

Here is when my problem starts...How do i input this variable into an insert sql statement. I check my statement and i tried hardcoding my data like this...
Code:
  mysql_query(conn,"INSERT INTO movie_info (movie_title , values ('Avatar')"   );

The database will be updated. But if im using a variable called NewMovie, what can i do for it to be able to be read by the query?

I read up Cstring and ostreamstring but i do not get how they are used. Could sombody show me using the the example i gave above how i can solve my problem.
 

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SQLITE_ESCAPE_STRING(3) 												   SQLITE_ESCAPE_STRING(3)

sqlite_escape_string - Escapes a string for use as a query parameter

SYNOPSIS
string sqlite_escape_string (string $item) DESCRIPTION
sqlite_escape_string(3) will correctly quote the string specified by $item for use in an SQLite SQL statement. This includes doubling up single-quote characters ( ') and checking for binary-unsafe characters in the query string. Although the encoding makes it safe to insert the data, it will render simple text comparisons and LIKE clauses in your queries unusable for the columns that contain the binary data. In practice, this shouldn't be a problem, as your schema should be such that you don't use such things on binary columns (in fact, it might be better to store binary data using other means, such as in files). PARAMETERS
o $item - The string being quoted. If the $item contains a NUL character, or if it begins with a character whose ordinal value is 0x01, PHP will apply a binary encoding scheme so that you can safely store and retrieve binary data. RETURN VALUES
Returns an escaped string for use in an SQLite SQL statement. NOTES
Note Do not use this function to encode the return values from UDF's created using sqlite_create_function(3) or sqlite_create_aggre- gate(3) - use sqlite_udf_encode_binary(3) instead. Warning addslashes(3) should NOT be used to quote your strings for SQLite queries; it will lead to strange results when retrieving your data. SEE ALSO
sqlite_udf_encode_binary(3). PHP Documentation Group SQLITE_ESCAPE_STRING(3)
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