Source Field incorrectly escapes %%

[deanknudsondowner]

I have a field

rh_av = fields.FloatField(source_field="RH%%_Av", null=True)

Actual field name is RH%_Av % has been escaped for obvious reasons. This was working fine when I was using djangos orm.

When this field is present in the table definition it prevents any data loading. I just receive attribute not found errors on any member access. Table works fine when it has been removed. This is an existing table that is unmanaged by the orm.

SQL generated from a table is as:

SELECT AirTemp2_Inst,AirTemp1_Inst,Precip1_Day,Lysim1_Run24hr,Wind1GustDay1s,Wind1GustDayDir1s,Wind1Lull3s,SDWD_Yam,IR_SnowSurfTemp,DewPoint_Av,Wind1GustDir3s,Precip1_SinceLastStorm,AirTemp1_MinObs,Wind1WindChill_10MinAvg,Wind1GustDayDir3s,AP1_CPressure,Wind1LullDir3s,Precip1_Run12hr,RH%%_Av,Wind1GustDay3s,SnowDepth2BestMQN,Wind1Gust1s,IPA2_TankLevel,Blank3,Blank2,RecNum,CR1000_PTemp_Inst,Batt_Volts_Aux1,SnowDepth2,SnowDepth1BestMQN,Lysim1_10min,Precip1_Run1hr,SolarRd1_Inst,SolarRad_Av,VaisalaTemp1_Avg,Lysim1_Day,Pump1Counter,UVMWD,SnowDepth1,TmStamp,Wind1GustDir1s,Pump1TankLevel,IPA1_TankLevel,MHWS,Blank1,AirTemp1_MaxObs,Blank4,AirTemp1_2DeltaT,Lysim1_Run12hr,AirTemp1_Av,SnowWeight,CR1000_Batt_Volts,AirTemp2_Av,SnowDepth1_Delta24hr,Wind1Gust3s,Precip1_Run24hr,Pump2Counter,Precip1_EventTotal,Precip1_10min FROM nzta_belle1_aws_10 ORDER BY TmStamp DESC LIMIT %s