Why is using DBI's variable-binding causing a MySQL query to fail?
Tag : mysql , By : sgmichelsen
Date : March 29 2020, 07:55 AM
help you fix your problem When you bind a variable to a placeholder, MySQL uses exactly what is in the Perl variable. When you interpolate a variable into a SQL statement, MySQL treats it as a string literal. MySQL handles unknown backslash escapes by removing the backslash. As MySQL string literals, '\S' and 'S' are equivalent. When you use placeholders, '\S' in a Perl variable is equivalent to '\\S' as a MySQL string literal. my $aes_key = 'X`ku@wC_BISgY[S%/<iaB>&VXd5zDA+'; # note missing backslash
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Create query in sparql using jena without hard coding the query?
Date : March 29 2020, 07:55 AM
Hope this helps Can you add more detail on what you want to do i.e. is there a general template to your queries or particular types of queries you want to make?
Jena does have some support for substituting variables into prepared queries so you can hard code a template and then substitute values as desired based on your inputs. But whether this is applicable depends on what queries you want to make.
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How to use SUM IF() in MySQL without hard coding values in the query
Tag : mysql , By : Sergio Rudenko
Date : March 29 2020, 07:55 AM
help you fix your problem You can return each count as a separate row, and then filter as needed in the application layer: select storeid, marketsegmentid, count(*) as Count
from storemarketsegments
group by storeid, marketsegmentid;
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When I run a C# parameterized query, it times out. Same query with hard-coded parameters works fine
Tag : chash , By : Pancilobak
Date : March 29 2020, 07:55 AM
may help you . I want to get all IDs where the Text column contains the string filter. , SOLVED! I set the search up as a stored procedure: SQL: CREATE PROCEDURE TextSearch
@filter varchar(MAX) = ''
AS
BEGIN
SET NOCOUNT ON;
SELECT DISTINCT ID FROM TableName WHERE [Text] LIKE '%' + @filter + '%'
END
GO
SqlCommand cmd = new SqlCommand("TextSearch", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@filter", filter));
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Printing from hard-coding works but how do I print the values from these variable inputs from defined methods in Python?
Date : March 29 2020, 07:55 AM
hope this fix your issue There is no return for the KeyInString(n) function and the other function, therefore, nothing is stored in the variable. try this: def KeyInString(n):
while True:
try:
n = str(input('Enter> '))
except StandardError:
print("Error encountered! Please try again.\n")
continue
return n
def KeyInString():
while True:
try:
n = str(input('Enter> '))
except StandardError:
print("Error encountered! Please try again.\n")
continue
return n
EMail = KeyInString()
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