c# - Mysql WHERE LIKE with RadCombobox.Text -


i having trouble select due use of @.

using

string mysql = "select * sytransactioncategory transactioncategory '%' + @transactioncategory + '%'";

do not work.

i found several interesting answers, this did not not manage adapt case. here current c# code:

string mysql = "select * sytransactioncategory transactioncategory @transactioncategory"; mysqldataadapter adapter = new mysqldataadapter(mysql,configurationmanager.connectionstrings["defaultconnection"].connectionstring); adapter.selectcommand.parameters.addwithvalue("@transactioncategory", e.text);

anyone give me track please?

the + operator in mysql works on numbers.

you want ... concat('%', transactioncategory, '%') if you're trying construct strings in query.

the kicker this: 0 + 'somethingrandom' has result value of zero, because mysql tries convert 'somethingrandom' integer, , decides it's zero.

0 + '2randomthings'

has value of 2.

so, query saying where column 0

  1. doesn't fail throwing kind of syntax error.
  2. doesn't find useful.

debugging kind of stuff in mysql pain in synt*x


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