c# - System Data SqlClient SqlException -


i have execute updating query :

 using (sqlcommand sqlcmd = new sqlcommand("update  test set testedpiece = testedpiece + 1 , rate = (testedpiece  * 100) / totalpiece  idsuperlot = @super", connexion))

but have error system.data.sqlclient.sqlexception (0x80131904): incorrect syntax near keyword 'and'.

i don't know why error appears , how can fix it

  1. what sql syntax error?
  2. how can fix it?

your sql command starts this:

update  test set testedpiece = testedpiece + 1 , rate = ...

change this:

update  test set testedpiece = testedpiece + 1, rate = ...

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