I need some help in implementing complex rules in decision table.. Following are the two queries that I need to implement in decision table. 1 ----------- ((UPPER(PRODUCT_TYPE_CODE) IN ('REO', 'TRM')) OR (UPPER(INVESTMENT_GROUP_TYPE) = 'EQUITY' AND deal_ltv_nbi_ext_Debt <= .6)) AND UPPER(PRIMARY_COLLATERAL_TYPE) = 'HOTEL' 2 --------------(UPPER(INVESTMENT_GROUP_TYPE) = 'EQUITY' OR UPPER(PRODUCT_TYPE_CODE) = 'LES') AND ((UPPER(NNN_LEASE) = 'Y' AND DECODE(ENHANCED_ITV, NULL, DEAL_ITV_NBI_SPP_CURR_MKT_VAL, ENHANCED_ITV) >= .95 AND Core_Property_Type_YN = 'Y') OR (UPPER(NNN_LEASE) = 'Y' AND DECODE(ENHANCED_ITV, NULL, DEAL_ITV_NBI_SPP_CURR_MKT_VAL, ENHANCED_ITV) >= .85 AND Core_Property_Type_YN = 'N')) I need to use decision tables only. so do I implement them. I have attached a decsion table in which I have to implement. http://drools.46999.n3.nabble.com/file/n4017941/LeverageRuleSheet1.xls LeverageRuleSheet1.xls -- View this message in context: http://drools.46999.n3.nabble.com/Implementing-complex-operators-in-Decis... Sent from the Drools: User forum mailing list archive at Nabble.com.