fix(postgres): replace MySQL IF() with Case in Cheques and Deposits report

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

erpnext/accounts/report/cheques_and_deposits_incorrectly_cleared/cheques_and_deposits_incorrectly_cleared.py

@@ -3,7 +3,7 @@
 
 import frappe
 from frappe import _, qb
-from frappe.query_builder import CustomFunction
+from frappe.query_builder import Case
 from frappe.query_builder.custom import ConstantColumn
 
 
@@ -93,7 +93,6 @@ def get_amounts_not_reflected_in_system_for_bank_reconciliation_statement(filter
 		.run(as_dict=1)
 	)
 
-	ifelse = CustomFunction("IF", ["condition", "then", "else"])
 	pe = qb.DocType("Payment Entry")
 	doctype_name = ConstantColumn("Payment Entry")
 	payments = (
@@ -101,7 +100,10 @@ def get_amounts_not_reflected_in_system_for_bank_reconciliation_statement(filter
 		.select(
 			doctype_name.as_("doctype"),
 			pe.name,
-			ifelse(pe.paid_from.eq(filters.account), pe.paid_amount, pe.received_amount).as_("amount"),
+			Case()
+			.when(pe.paid_from.eq(filters.account), pe.paid_amount)
+			.else_(pe.received_amount)
+			.as_("amount"),
 			pe.payment_type,
 			pe.party_type,
 			pe.posting_date,

erpnext/accounts/report/cheques_and_deposits_incorrectly_cleared/test_cheques_and_deposits_incorrectly_cleared.py

@@ -0,0 +1,24 @@
+# Copyright (c) 2024, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+import frappe
+from frappe.utils import nowdate
+
+from erpnext.accounts.report.cheques_and_deposits_incorrectly_cleared.cheques_and_deposits_incorrectly_cleared import (
+	execute,
+)
+from erpnext.tests.utils import ERPNextTestSuite
+
+
+class TestChequesAndDepositsIncorrectlyCleared(ERPNextTestSuite):
+	def test_report_executes_with_case_amount(self):
+		# Exercises the Payment Entry branch whose amount column uses a db-aware CASE expression
+		# (previously a MySQL-only IF()). IF() does not compile on postgres, so running the report
+		# query guards the portability fix on both databases.
+		company = frappe.db.get_value("Company", {}, "name")
+		account = frappe.db.get_value(
+			"Account", {"account_type": "Bank", "company": company, "is_group": 0}, "name"
+		)
+		columns, data = execute(frappe._dict({"account": account, "report_date": nowdate()}))
+		self.assertTrue(columns)
+		self.assertIsInstance(data, list)