comptime sql bindings for zig
ziglang
sql
add bind() for named parameter support
converts struct args to positional tuple matching sql param order.
struct field names match :name params - order in struct doesn't matter.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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src/Query.zig
+38
src/Query.zig
···
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return result;
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}
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/// bind args struct to positional tuple in param order
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pub fn bind(args: anytype) BindTuple(@TypeOf(args)) {
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comptime validateArgs(@TypeOf(args));
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var result: BindTuple(@TypeOf(args)) = undefined;
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inline for (params, 0..) |p, i| {
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result[i] = @field(args, p);
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}
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return result;
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}
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fn BindTuple(comptime Args: type) type {
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const fields = @typeInfo(Args).@"struct".fields;
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var types: [param_count]type = undefined;
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inline for (params, 0..) |p, i| {
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for (fields) |f| {
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if (std.mem.eql(u8, f.name, p)) {
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types[i] = f.type;
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break;
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}
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}
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}
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return std.meta.Tuple(&types);
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}
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fn hasField(fields: anytype, name: []const u8) bool {
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inline for (fields) |f| {
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if (std.mem.eql(u8, f.name, name)) return true;
···
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const Partial = struct { id: i64, name: []const u8 };
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comptime Q.validateStruct(Partial);
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}
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test "bind" {
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const Q = Query("INSERT INTO users (name, age) VALUES (:name, :age)");
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try std.testing.expectEqualStrings("INSERT INTO users (name, age) VALUES (?, ?)", Q.positional);
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const args = Q.bind(.{ .name = "alice", .age = @as(i64, 25) });
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try std.testing.expectEqualStrings("alice", args[0]);
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try std.testing.expectEqual(25, args[1]);
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// order doesn't matter in input struct
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const args2 = Q.bind(.{ .age = @as(i64, 30), .name = "bob" });
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try std.testing.expectEqualStrings("bob", args2[0]);
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try std.testing.expectEqual(30, args2[1]);
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}
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test "fromRow" {