Always add parentheses around PgUnknownBinaryExpression (#3073)

Fixes #3072

Author: roji

src/EFCore.PG/Query/Internal/NpgsqlQuerySqlGenerator.cs

@@ -1401,7 +1401,7 @@ protected override bool RequiresParentheses(SqlExpression outerExpression, SqlEx
 
                         // If both operators have the same precedence, add parentheses unless they're the same operator, and
                         // that operator is associative (e.g. a + b + c)
-                        0 => outerExpression is not PgBinaryExpression outerBinary
+                        _ => outerExpression is not PgBinaryExpression outerBinary
                             || outerBinary.OperatorType != innerBinary.OperatorType
                             || !isOuterAssociative
                             // Arithmetic operators on floating points aren't associative, because of rounding errors.
@@ -1416,6 +1416,9 @@ protected override bool RequiresParentheses(SqlExpression outerExpression, SqlEx
                 return true;
             }
 
+            case PgUnknownBinaryExpression:
+                return true;
+
             default:
                 return base.RequiresParentheses(outerExpression, innerExpression);
         }

test/EFCore.PG.FunctionalTests/Query/TrigramsQueryNpgsqlTest.cs

@@ -27,7 +27,7 @@ public TrigramsQueryNpgsqlTest(TrigramsQueryNpgsqlFixture fixture, ITestOutputHe
     public void TrigramsShow()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsShow(x.Text))
             .ToArray();
 
@@ -38,7 +38,7 @@ public void TrigramsShow()
     public void TrigramsSimilarity()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsSimilarity(x.Text, "target"))
             .ToArray();
 
@@ -49,7 +49,7 @@ public void TrigramsSimilarity()
     public void TrigramsWordSimilarity()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsWordSimilarity(x.Text, "target"))
             .ToArray();
 
@@ -61,7 +61,7 @@ public void TrigramsWordSimilarity()
     public void TrigramsStrictWordSimilarity()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsStrictWordSimilarity(x.Text, "target"))
             .ToArray();
 
@@ -72,7 +72,7 @@ public void TrigramsStrictWordSimilarity()
     public void TrigramsAreSimilar()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsAreSimilar(x.Text, "target"))
             .ToArray();
 
@@ -83,7 +83,7 @@ public void TrigramsAreSimilar()
     public void TrigramsAreWordSimilar()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsAreWordSimilar(x.Text, "target"))
             .ToArray();
 
@@ -94,7 +94,7 @@ public void TrigramsAreWordSimilar()
     public void TrigramsAreNotWordSimilar()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsAreNotWordSimilar(x.Text, "target"))
             .ToArray();
 
@@ -106,7 +106,7 @@ public void TrigramsAreNotWordSimilar()
     public void TrigramsAreStrictWordSimilar()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsAreStrictWordSimilar(x.Text, "target"))
             .ToArray();
 
@@ -118,7 +118,7 @@ public void TrigramsAreStrictWordSimilar()
     public void TrigramsAreNotStrictWordSimilar()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsAreNotStrictWordSimilar(x.Text, "target"))
             .ToArray();
 
@@ -129,7 +129,7 @@ public void TrigramsAreNotStrictWordSimilar()
     public void TrigramsSimilarityDistance()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsSimilarityDistance(x.Text, "target"))
             .ToArray();
 
@@ -140,7 +140,7 @@ public void TrigramsSimilarityDistance()
     public void TrigramsWordSimilarityDistance()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsWordSimilarityDistance(x.Text, "target"))
             .ToArray();
 
@@ -151,7 +151,7 @@ public void TrigramsWordSimilarityDistance()
     public void TrigramsWordSimilarityDistanceInverted()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsWordSimilarityDistanceInverted(x.Text, "target"))
             .ToArray();
 
@@ -163,7 +163,7 @@ public void TrigramsWordSimilarityDistanceInverted()
     public void TrigramsStrictWordSimilarityDistance()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsStrictWordSimilarityDistance(x.Text, "target"))
             .ToArray();
 
@@ -175,18 +175,18 @@ public void TrigramsStrictWordSimilarityDistance()
     public void TrigramsStrictWordSimilarityDistanceInverted()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Select(x => EF.Functions.TrigramsStrictWordSimilarityDistanceInverted(x.Text, "target"))
             .ToArray();
 
         AssertContainsSql(@"t.""Text"" <->>> 'target'");
     }
 
     [Fact] // #1659
-    public void Operator_precedence()
+    public void Concatenation_operator_precedence()
     {
         using var context = CreateContext();
-        var _ = context.TrigramsTestEntities
+        _ = context.TrigramsTestEntities
             .Where(e => EF.Functions.TrigramsAreSimilar(e.Text + " " + e.Text, "query"))
             .ToArray();
 
@@ -198,6 +198,22 @@ public void Operator_precedence()
 """);
     }
 
+    [Fact] // #3072
+    public void PgUnknownBinary_operator_precedence()
+    {
+        using var context = CreateContext();
+        _ = context.TrigramsTestEntities
+            .Where(e => 1 - EF.Functions.TrigramsSimilarityDistance(e.Text, "query") > 8)
+            .ToArray();
+
+        AssertSql(
+            """
+SELECT t."Id", t."Text"
+FROM "TrigramsTestEntities" AS t
+WHERE 1 - (t."Text" <-> 'query') > 8
+""");
+    }
+
     #endregion
 
     #region Fixtures