Fix some bugs in sql engine

src/sql/engines/common.zig

@@ -88,7 +88,7 @@ pub fn prepareParamText(arena: *std.heap.ArenaAllocator, val: anytype) !?[:0]con
         else => |T| switch (@typeInfo(T)) {
             .Enum => return @tagName(val),
             .Optional => if (val) |v| try prepareParamText(arena, v) else null,
-            .Int => try std.fmt.allocPrintZ(arena.allocator(), "{}", .{val}),
+            .Bool, .Int => try std.fmt.allocPrintZ(arena.allocator(), "{}", .{val}),
             .Union => loop: inline for (std.meta.fields(T)) |field| {
                 // Have to do this in a roundabout way to satisfy comptime checker
                 const Tag = std.meta.Tag(T);

src/sql/engines/sqlite.zig

@@ -193,6 +193,7 @@ pub const Db = struct {
             .Null => return self.bindNull(stmt, idx),
             .Int => return self.bindInt(stmt, idx, std.math.cast(i64, val) orelse unreachable),
             .Float => return self.bindFloat(stmt, idx, val),
+            .Bool => return self.bindInt(stmt, idx, if (val) 1 else 0),
             else => @compileError("Unable to serialize type " ++ @typeName(T)),
         }
     }
@@ -251,18 +252,20 @@ pub const Results = struct {
     db: *c.sqlite3,
 
     pub fn finish(self: Results) void {
-        switch (c.sqlite3_finalize(self.stmt)) {
+        _ = c.sqlite3_finalize(self.stmt);
-            c.SQLITE_OK => {},
-            else => |err| {
-                handleUnexpectedError(self.db, err, self.getGeneratingSql()) catch {};
-            },
-        }
     }
 
     pub fn row(self: Results) common.RowError!?Row {
         return switch (c.sqlite3_step(self.stmt)) {
             c.SQLITE_ROW => Row{ .stmt = self.stmt, .db = self.db },
             c.SQLITE_DONE => null,
+
+            c.SQLITE_CONSTRAINT_UNIQUE => return error.UniqueViolation,
+            c.SQLITE_CONSTRAINT_CHECK => return error.CheckViolation,
+            c.SQLITE_CONSTRAINT_NOTNULL => return error.NotNullViolation,
+            c.SQLITE_CONSTRAINT_FOREIGNKEY => return error.ForeignKeyViolation,
+            c.SQLITE_CONSTRAINT => return error.ConstraintViolation,
+
             else => |err| handleUnexpectedError(self.db, err, self.getGeneratingSql()),
         };
     }

src/sql/lib.zig

@@ -431,6 +431,7 @@ fn Tx(comptime tx_level: u8) type {
         pub fn rollback(self: Self) void {
             (if (tx_level < 2) self.rollbackTx() else self.rollbackSavepoint()) catch |err| {
                 std.log.err("Failed to rollback transaction: {}", .{err});
+                std.log.err("{any}", .{@errorReturnTrace()});
                 @panic("TODO: more gracefully handle rollback failures");
             };
         }
@@ -628,7 +629,7 @@ fn Tx(comptime tx_level: u8) type {
         }
 
         fn rollbackUnchecked(self: Self) !void {
-            try self.exec("ROLLBACK", {}, null);
+            try self.execInternal("ROLLBACK", {}, null, false);
         }
     };
 }