java - Incorrect SQL syntax occurs -


i am, part, importing values table on mysql. following code gets sql syntax error:

        grossprofit = double.parsedouble(salestext.gettext())-double.parsedouble(cogstext.gettext());         totalexpenses = double.parsedouble(exsalestext.gettext())+double.parsedouble(gaextext.gettext())+double.parsedouble(otherextext.gettext());         profit = grossprofit-totalexpenses;          sql = "update budgetreport" +                 " set sales=?"+                 ", cogs=?"+                 ", gross_profit=?"+                 ", sales_ex=?"+                 ",  g&a_ex=?"+                 ", other_ex=?"+                 ", total_ex=?"+                 ", profit=?"+                 " quarter=?";         try {             preparedstatement statement = conn.preparestatement(sql);             statement.setstring(1, salestext.gettext());             statement.setstring(2, cogstext.gettext());             statement.setdouble(3, grossprofit);             statement.setstring(4, exsalestext.gettext());             statement.setstring(5, gaextext.gettext());             statement.setstring(6, otherextext.gettext());             statement.setdouble(7, totalexpenses);             statement.setdouble(8, profit);             statement.setint(9, qtracker);             statement.executeupdate();         } catch (exception e1) {             e1.printstacktrace();         }

it worked before, when had 2 input variables in sql code. how make work?

edit: error(just sql syntax error believe)

com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: have error in sql syntax; check manual corresponds mysql server version right syntax use near '&a_ex='1', other_ex='1', total_ex=3.0, profit=3.0, quarter=2' @ line 1 @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method) @ sun.reflect.nativeconstructoraccessorimpl.newinstance(unknown source) @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(unknown source) @ java.lang.reflect.constructor.newinstance(unknown source) @ com.mysql.jdbc.util.handlenewinstance(util.java:400) @ com.mysql.jdbc.util.getinstance(util.java:383) @ com.mysql.jdbc.sqlerror.createsqlexception(sqlerror.java:980) @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:3847) @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:3783) @ com.mysql.jdbc.mysqlio.sendcommand(mysqlio.java:2447) @ com.mysql.jdbc.mysqlio.sqlquerydirect(mysqlio.java:2594) @ com.mysql.jdbc.connectionimpl.execsql(connectionimpl.java:2545) @ com.mysql.jdbc.preparedstatement.executeinternal(preparedstatement.java:1901) @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2113) @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2049) @ com.mysql.jdbc.preparedstatement.executeupdate(preparedstatement.java:2034) @ myprojects.budgetreport.lambda$2(budgetreport.java:180) @ myprojects.budgetreport$$lambda$15/1910163204.actionperformed(unknown source) @ javax.swing.abstractbutton.fireactionperformed(unknown source) @ javax.swing.abstractbutton$handler.actionperformed(unknown source) @ javax.swing.defaultbuttonmodel.fireactionperformed(unknown source) @ javax.swing.defaultbuttonmodel.setpressed(unknown source) @ javax.swing.plaf.basic.basicbuttonlistener.mousereleased(unknown source) @ java.awt.component.processmouseevent(unknown source) @ javax.swing.jcomponent.processmouseevent(unknown source) @ java.awt.component.processevent(unknown source) @ java.awt.container.processevent(unknown source) @ java.awt.component.dispatcheventimpl(unknown source) @ java.awt.container.dispatcheventimpl(unknown source) @ java.awt.component.dispatchevent(unknown source) @ java.awt.lightweightdispatcher.retargetmouseevent(unknown source) @ java.awt.lightweightdispatcher.processmouseevent(unknown source) @ java.awt.lightweightdispatcher.dispatchevent(unknown source) @ java.awt.container.dispatcheventimpl(unknown source) @ java.awt.window.dispatcheventimpl(unknown source) @ java.awt.component.dispatchevent(unknown source) @ java.awt.eventqueue.dispatcheventimpl(unknown source) @ java.awt.eventqueue.access$500(unknown source) @ java.awt.eventqueue$3.run(unknown source) @ java.awt.eventqueue$3.run(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.awt.eventqueue$4.run(unknown source) @ java.awt.eventqueue$4.run(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ java.security.protectiondomain$1.dointersectionprivilege(unknown source) @ java.awt.eventqueue.dispatchevent(unknown source) @ java.awt.eventdispatchthread.pumponeeventforfilters(unknown source) @ java.awt.eventdispatchthread.pumpeventsforfilter(unknown source) @ java.awt.eventdispatchthread.pumpeventsforhierarchy(unknown source) @ java.awt.eventdispatchthread.pumpevents(unknown source) @ java.awt.eventdispatchthread.pumpevents(unknown source) @ java.awt.eventdispatchthread.run(unknown source)

g&a_ex not valid column name. typo

edit: jason w mentioning & allowed in mysql identifiers provided escaped backtick `


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