[TBASE-1047] Go connector prints all the SQL. This will harm the performance...

[TBASE-1047] Go connector prints all the SQL. This will harm the performance and consume unnecessary hard disk space. Modified to print only the SQLs which returns error.

src/connector/go/src/taosSql/taosSqlCgo.go

@@ -29,7 +29,7 @@ import (
 	"unsafe"
 )
 
-func (mc *taosConn) taosConnect(ip, user, pass, db string, port int) (taos unsafe.Pointer, err error){
+func (mc *taosConn) taosConnect(ip, user, pass, db string, port int) (taos unsafe.Pointer, err error) {
 	cuser := C.CString(user)
 	cpass := C.CString(pass)
 	cip := C.CString(ip)
@@ -48,7 +48,7 @@ func (mc *taosConn) taosConnect(ip, user, pass, db string, port int) (taos unsaf
 }
 
 func (mc *taosConn) taosQuery(sqlstr string) (int, error) {
-	taosLog.Printf("taosQuery() input sql:%s\n", sqlstr)
+	//taosLog.Printf("taosQuery() input sql:%s\n", sqlstr)
 
 	csqlstr := C.CString(sqlstr)
 	defer C.free(unsafe.Pointer(csqlstr))
@@ -58,6 +58,7 @@ func (mc *taosConn) taosQuery(sqlstr string) (int, error) {
 		mc.taos_error()
 		errStr := C.GoString(C.taos_errstr(mc.taos))
 		taosLog.Println("taos_query() failed:", errStr)
+		taosLog.Printf("taosQuery() input sql:%s\n", sqlstr)
 		return 0, errors.New(errStr)
 	}