multi: add relevant queries for QueryPayments implemenation

diff --git a/payments/db/sql_store.go b/payments/db/sql_store.go
index 12585ca..ced061a 100644
--- a/payments/db/sql_store.go
+++ b/payments/db/sql_store.go
@@ -1,14 +1,32 @@
 package paymentsdb
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/lightningnetwork/lnd/sqldb"
+	"github.com/lightningnetwork/lnd/sqldb/sqlc"
 )
 
 // SQLQueries is a subset of the sqlc.Querier interface that can be used to
 // execute queries against the SQL payments tables.
 type SQLQueries interface {
+	/*
+		Payment DB read operations.
+	*/
+	FilterPayments(ctx context.Context, query sqlc.FilterPaymentsParams) ([]sqlc.FilterPaymentsRow, error)
+	FetchPayment(ctx context.Context, paymentIdentifier []byte) (sqlc.FetchPaymentRow, error)
+	FetchPaymentsByIDs(ctx context.Context, paymentIDs []int64) ([]sqlc.FetchPaymentsByIDsRow, error)
+
+	CountPayments(ctx context.Context) (int64, error)
+
+	FetchHtlcAttemptsForPayments(ctx context.Context, paymentIDs []int64) ([]sqlc.FetchHtlcAttemptsForPaymentsRow, error)
+	FetchAllInflightAttempts(ctx context.Context) ([]sqlc.PaymentHtlcAttempt, error)
+	FetchHopsForAttempts(ctx context.Context, htlcAttemptIndices []int64) ([]sqlc.FetchHopsForAttemptsRow, error)
+
+	FetchPaymentLevelFirstHopCustomRecords(ctx context.Context, paymentIDs []int64) ([]sqlc.PaymentFirstHopCustomRecord, error)
+	FetchRouteLevelFirstHopCustomRecords(ctx context.Context, htlcAttemptIndices []int64) ([]sqlc.PaymentAttemptFirstHopCustomRecord, error)
+	FetchHopLevelCustomRecords(ctx context.Context, hopIDs []int64) ([]sqlc.PaymentHopCustomRecord, error)
 }
 
 // BatchedSQLQueries is a version of the SQLQueries that's capable
diff --git a/sqldb/sqlc/payments.sql.go b/sqldb/sqlc/payments.sql.go
new file mode 100644
index 0000000..83c1c7f
--- /dev/null
+++ b/sqldb/sqlc/payments.sql.go
@@ -0,0 +1,594 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.29.0
+// source: payments.sql
+
+package sqlc
+
+import (
+	"context"
+	"database/sql"
+	"strings"
+	"time"
+)
+
+const countPayments = `-- name: CountPayments :one
+SELECT COUNT(*) FROM payments
+`
+
+func (q *Queries) CountPayments(ctx context.Context) (int64, error) {
+	row := q.db.QueryRowContext(ctx, countPayments)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const fetchAllInflightAttempts = `-- name: FetchAllInflightAttempts :many
+SELECT
+    ha.id,
+    ha.attempt_index,
+    ha.payment_id,
+    ha.session_key,
+    ha.attempt_time,
+    ha.payment_hash,
+    ha.first_hop_amount_msat,
+    ha.route_total_time_lock,
+    ha.route_total_amount,
+    ha.route_source_key
+FROM payment_htlc_attempts ha
+WHERE NOT EXISTS (
+    SELECT 1 FROM payment_htlc_attempt_resolutions hr
+    WHERE hr.attempt_index = ha.attempt_index
+)
+ORDER BY ha.attempt_index ASC
+`
+
+// Fetch all inflight attempts across all payments
+func (q *Queries) FetchAllInflightAttempts(ctx context.Context) ([]PaymentHtlcAttempt, error) {
+	rows, err := q.db.QueryContext(ctx, fetchAllInflightAttempts)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []PaymentHtlcAttempt
+	for rows.Next() {
+		var i PaymentHtlcAttempt
+		if err := rows.Scan(
+			&i.ID,
+			&i.AttemptIndex,
+			&i.PaymentID,
+			&i.SessionKey,
+			&i.AttemptTime,
+			&i.PaymentHash,
+			&i.FirstHopAmountMsat,
+			&i.RouteTotalTimeLock,
+			&i.RouteTotalAmount,
+			&i.RouteSourceKey,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchHopLevelCustomRecords = `-- name: FetchHopLevelCustomRecords :many
+SELECT
+    l.id,
+    l.hop_id,
+    l.key,
+    l.value
+FROM payment_hop_custom_records l
+WHERE l.hop_id IN (/*SLICE:hop_ids*/?)
+ORDER BY l.hop_id ASC, l.key ASC
+`
+
+func (q *Queries) FetchHopLevelCustomRecords(ctx context.Context, hopIds []int64) ([]PaymentHopCustomRecord, error) {
+	query := fetchHopLevelCustomRecords
+	var queryParams []interface{}
+	if len(hopIds) > 0 {
+		for _, v := range hopIds {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:hop_ids*/?", makeQueryParams(len(queryParams), len(hopIds)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:hop_ids*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []PaymentHopCustomRecord
+	for rows.Next() {
+		var i PaymentHopCustomRecord
+		if err := rows.Scan(
+			&i.ID,
+			&i.HopID,
+			&i.Key,
+			&i.Value,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchHopsForAttempts = `-- name: FetchHopsForAttempts :many
+SELECT
+    h.id,
+    h.htlc_attempt_index,
+    h.hop_index,
+    h.pub_key,
+    h.scid,
+    h.outgoing_time_lock,
+    h.amt_to_forward,
+    h.meta_data,
+    m.payment_addr AS mpp_payment_addr,
+    m.total_msat AS mpp_total_msat,
+    a.root_share AS amp_root_share,
+    a.set_id AS amp_set_id,
+    a.child_index AS amp_child_index,
+    b.encrypted_data,
+    b.blinding_point,
+    b.blinded_path_total_amt
+FROM payment_route_hops h
+LEFT JOIN payment_route_hop_mpp m ON m.hop_id = h.id
+LEFT JOIN payment_route_hop_amp a ON a.hop_id = h.id
+LEFT JOIN payment_route_hop_blinded b ON b.hop_id = h.id
+WHERE h.htlc_attempt_index IN (/*SLICE:htlc_attempt_indices*/?)
+ORDER BY h.htlc_attempt_index ASC, h.hop_index ASC
+`
+
+type FetchHopsForAttemptsRow struct {
+	ID                  int64
+	HtlcAttemptIndex    int64
+	HopIndex            int32
+	PubKey              []byte
+	Scid                string
+	OutgoingTimeLock    int32
+	AmtToForward        int64
+	MetaData            []byte
+	MppPaymentAddr      []byte
+	MppTotalMsat        sql.NullInt64
+	AmpRootShare        []byte
+	AmpSetID            []byte
+	AmpChildIndex       sql.NullInt32
+	EncryptedData       []byte
+	BlindingPoint       []byte
+	BlindedPathTotalAmt sql.NullInt64
+}
+
+func (q *Queries) FetchHopsForAttempts(ctx context.Context, htlcAttemptIndices []int64) ([]FetchHopsForAttemptsRow, error) {
+	query := fetchHopsForAttempts
+	var queryParams []interface{}
+	if len(htlcAttemptIndices) > 0 {
+		for _, v := range htlcAttemptIndices {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:htlc_attempt_indices*/?", makeQueryParams(len(queryParams), len(htlcAttemptIndices)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:htlc_attempt_indices*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []FetchHopsForAttemptsRow
+	for rows.Next() {
+		var i FetchHopsForAttemptsRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.HtlcAttemptIndex,
+			&i.HopIndex,
+			&i.PubKey,
+			&i.Scid,
+			&i.OutgoingTimeLock,
+			&i.AmtToForward,
+			&i.MetaData,
+			&i.MppPaymentAddr,
+			&i.MppTotalMsat,
+			&i.AmpRootShare,
+			&i.AmpSetID,
+			&i.AmpChildIndex,
+			&i.EncryptedData,
+			&i.BlindingPoint,
+			&i.BlindedPathTotalAmt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchHtlcAttemptsForPayments = `-- name: FetchHtlcAttemptsForPayments :many
+SELECT
+    ha.id,
+    ha.attempt_index,
+    ha.payment_id,
+    ha.session_key,
+    ha.attempt_time,
+    ha.payment_hash,
+    ha.first_hop_amount_msat,
+    ha.route_total_time_lock,
+    ha.route_total_amount,
+    ha.route_source_key,
+    hr.resolution_type,
+    hr.resolution_time,
+    hr.failure_source_index,
+    hr.htlc_fail_reason,
+    hr.failure_msg,
+    hr.settle_preimage
+FROM payment_htlc_attempts ha
+LEFT JOIN payment_htlc_attempt_resolutions hr ON hr.attempt_index = ha.attempt_index
+WHERE ha.payment_id IN (/*SLICE:payment_ids*/?)
+ORDER BY ha.payment_id ASC, ha.attempt_time ASC
+`
+
+type FetchHtlcAttemptsForPaymentsRow struct {
+	ID                 int64
+	AttemptIndex       int64
+	PaymentID          int64
+	SessionKey         []byte
+	AttemptTime        time.Time
+	PaymentHash        []byte
+	FirstHopAmountMsat int64
+	RouteTotalTimeLock int32
+	RouteTotalAmount   int64
+	RouteSourceKey     []byte
+	ResolutionType     sql.NullInt32
+	ResolutionTime     sql.NullTime
+	FailureSourceIndex sql.NullInt32
+	HtlcFailReason     sql.NullInt32
+	FailureMsg         []byte
+	SettlePreimage     []byte
+}
+
+func (q *Queries) FetchHtlcAttemptsForPayments(ctx context.Context, paymentIds []int64) ([]FetchHtlcAttemptsForPaymentsRow, error) {
+	query := fetchHtlcAttemptsForPayments
+	var queryParams []interface{}
+	if len(paymentIds) > 0 {
+		for _, v := range paymentIds {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", makeQueryParams(len(queryParams), len(paymentIds)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []FetchHtlcAttemptsForPaymentsRow
+	for rows.Next() {
+		var i FetchHtlcAttemptsForPaymentsRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.AttemptIndex,
+			&i.PaymentID,
+			&i.SessionKey,
+			&i.AttemptTime,
+			&i.PaymentHash,
+			&i.FirstHopAmountMsat,
+			&i.RouteTotalTimeLock,
+			&i.RouteTotalAmount,
+			&i.RouteSourceKey,
+			&i.ResolutionType,
+			&i.ResolutionTime,
+			&i.FailureSourceIndex,
+			&i.HtlcFailReason,
+			&i.FailureMsg,
+			&i.SettlePreimage,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchPayment = `-- name: FetchPayment :one
+SELECT
+    p.id, p.intent_id, p.amount_msat, p.created_at, p.payment_identifier, p.fail_reason,
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE p.payment_identifier = $1
+`
+
+type FetchPaymentRow struct {
+	Payment       Payment
+	IntentType    sql.NullInt16
+	IntentPayload []byte
+}
+
+func (q *Queries) FetchPayment(ctx context.Context, paymentIdentifier []byte) (FetchPaymentRow, error) {
+	row := q.db.QueryRowContext(ctx, fetchPayment, paymentIdentifier)
+	var i FetchPaymentRow
+	err := row.Scan(
+		&i.Payment.ID,
+		&i.Payment.IntentID,
+		&i.Payment.AmountMsat,
+		&i.Payment.CreatedAt,
+		&i.Payment.PaymentIdentifier,
+		&i.Payment.FailReason,
+		&i.IntentType,
+		&i.IntentPayload,
+	)
+	return i, err
+}
+
+const fetchPaymentLevelFirstHopCustomRecords = `-- name: FetchPaymentLevelFirstHopCustomRecords :many
+SELECT
+    l.id,
+    l.payment_id,
+    l.key,
+    l.value
+FROM payment_first_hop_custom_records l
+WHERE l.payment_id IN (/*SLICE:payment_ids*/?)
+ORDER BY l.payment_id ASC, l.key ASC
+`
+
+func (q *Queries) FetchPaymentLevelFirstHopCustomRecords(ctx context.Context, paymentIds []int64) ([]PaymentFirstHopCustomRecord, error) {
+	query := fetchPaymentLevelFirstHopCustomRecords
+	var queryParams []interface{}
+	if len(paymentIds) > 0 {
+		for _, v := range paymentIds {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", makeQueryParams(len(queryParams), len(paymentIds)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []PaymentFirstHopCustomRecord
+	for rows.Next() {
+		var i PaymentFirstHopCustomRecord
+		if err := rows.Scan(
+			&i.ID,
+			&i.PaymentID,
+			&i.Key,
+			&i.Value,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchPaymentsByIDs = `-- name: FetchPaymentsByIDs :many
+SELECT
+    p.id, p.intent_id, p.amount_msat, p.created_at, p.payment_identifier, p.fail_reason,
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE p.id IN (/*SLICE:payment_ids*/?)
+`
+
+type FetchPaymentsByIDsRow struct {
+	Payment       Payment
+	IntentType    sql.NullInt16
+	IntentPayload []byte
+}
+
+func (q *Queries) FetchPaymentsByIDs(ctx context.Context, paymentIds []int64) ([]FetchPaymentsByIDsRow, error) {
+	query := fetchPaymentsByIDs
+	var queryParams []interface{}
+	if len(paymentIds) > 0 {
+		for _, v := range paymentIds {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", makeQueryParams(len(queryParams), len(paymentIds)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:payment_ids*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []FetchPaymentsByIDsRow
+	for rows.Next() {
+		var i FetchPaymentsByIDsRow
+		if err := rows.Scan(
+			&i.Payment.ID,
+			&i.Payment.IntentID,
+			&i.Payment.AmountMsat,
+			&i.Payment.CreatedAt,
+			&i.Payment.PaymentIdentifier,
+			&i.Payment.FailReason,
+			&i.IntentType,
+			&i.IntentPayload,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const fetchRouteLevelFirstHopCustomRecords = `-- name: FetchRouteLevelFirstHopCustomRecords :many
+SELECT
+    l.id,
+    l.htlc_attempt_index,
+    l.key,
+    l.value
+FROM payment_attempt_first_hop_custom_records l
+WHERE l.htlc_attempt_index IN (/*SLICE:htlc_attempt_indices*/?)
+ORDER BY l.htlc_attempt_index ASC, l.key ASC
+`
+
+func (q *Queries) FetchRouteLevelFirstHopCustomRecords(ctx context.Context, htlcAttemptIndices []int64) ([]PaymentAttemptFirstHopCustomRecord, error) {
+	query := fetchRouteLevelFirstHopCustomRecords
+	var queryParams []interface{}
+	if len(htlcAttemptIndices) > 0 {
+		for _, v := range htlcAttemptIndices {
+			queryParams = append(queryParams, v)
+		}
+		query = strings.Replace(query, "/*SLICE:htlc_attempt_indices*/?", makeQueryParams(len(queryParams), len(htlcAttemptIndices)), 1)
+	} else {
+		query = strings.Replace(query, "/*SLICE:htlc_attempt_indices*/?", "NULL", 1)
+	}
+	rows, err := q.db.QueryContext(ctx, query, queryParams...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []PaymentAttemptFirstHopCustomRecord
+	for rows.Next() {
+		var i PaymentAttemptFirstHopCustomRecord
+		if err := rows.Scan(
+			&i.ID,
+			&i.HtlcAttemptIndex,
+			&i.Key,
+			&i.Value,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const filterPayments = `-- name: FilterPayments :many
+/* ─────────────────────────────────────────────
+   fetch queries
+   ─────────────────────────────────────────────
+*/
+
+SELECT
+    p.id, p.intent_id, p.amount_msat, p.created_at, p.payment_identifier, p.fail_reason,
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE (
+    p.id > $1 OR
+    $1 IS NULL
+) AND (
+    p.id < $2 OR
+    $2 IS NULL
+) AND (
+    p.created_at >= $3 OR
+    $3 IS NULL
+) AND (
+    p.created_at <= $4 OR
+    $4 IS NULL
+) AND (
+    i.intent_type = $5 OR
+    $5 IS NULL OR i.intent_type IS NULL
+)
+ORDER BY
+    CASE WHEN $6 = false OR $6 IS NULL THEN p.id END ASC,
+    CASE WHEN $6 = true THEN p.id END DESC
+LIMIT $7
+`
+
+type FilterPaymentsParams struct {
+	IndexOffsetGet sql.NullInt64
+	IndexOffsetLet sql.NullInt64
+	CreatedAfter   sql.NullTime
+	CreatedBefore  sql.NullTime
+	IntentType     sql.NullInt16
+	Reverse        interface{}
+	NumLimit       int32
+}
+
+type FilterPaymentsRow struct {
+	Payment       Payment
+	IntentType    sql.NullInt16
+	IntentPayload []byte
+}
+
+func (q *Queries) FilterPayments(ctx context.Context, arg FilterPaymentsParams) ([]FilterPaymentsRow, error) {
+	rows, err := q.db.QueryContext(ctx, filterPayments,
+		arg.IndexOffsetGet,
+		arg.IndexOffsetLet,
+		arg.CreatedAfter,
+		arg.CreatedBefore,
+		arg.IntentType,
+		arg.Reverse,
+		arg.NumLimit,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []FilterPaymentsRow
+	for rows.Next() {
+		var i FilterPaymentsRow
+		if err := rows.Scan(
+			&i.Payment.ID,
+			&i.Payment.IntentID,
+			&i.Payment.AmountMsat,
+			&i.Payment.CreatedAt,
+			&i.Payment.PaymentIdentifier,
+			&i.Payment.FailReason,
+			&i.IntentType,
+			&i.IntentPayload,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
diff --git a/sqldb/sqlc/querier.go b/sqldb/sqlc/querier.go
index 5f2fc65..f4c7673 100644
--- a/sqldb/sqlc/querier.go
+++ b/sqldb/sqlc/querier.go
@@ -15,6 +15,7 @@ type Querier interface {
 	AddV1ChannelProof(ctx context.Context, arg AddV1ChannelProofParams) (sql.Result, error)
 	AddV2ChannelProof(ctx context.Context, arg AddV2ChannelProofParams) (sql.Result, error)
 	ClearKVInvoiceHashIndex(ctx context.Context) error
+	CountPayments(ctx context.Context) (int64, error)
 	CountZombieChannels(ctx context.Context, version int16) (int64, error)
 	CreateChannel(ctx context.Context, arg CreateChannelParams) (int64, error)
 	DeleteCanceledInvoices(ctx context.Context) (sql.Result, error)
@@ -31,10 +32,19 @@ type Querier interface {
 	DeleteZombieChannel(ctx context.Context, arg DeleteZombieChannelParams) (sql.Result, error)
 	FetchAMPSubInvoiceHTLCs(ctx context.Context, arg FetchAMPSubInvoiceHTLCsParams) ([]FetchAMPSubInvoiceHTLCsRow, error)
 	FetchAMPSubInvoices(ctx context.Context, arg FetchAMPSubInvoicesParams) ([]AmpSubInvoice, error)
+	// Fetch all inflight attempts across all payments
+	FetchAllInflightAttempts(ctx context.Context) ([]PaymentHtlcAttempt, error)
+	FetchHopLevelCustomRecords(ctx context.Context, hopIds []int64) ([]PaymentHopCustomRecord, error)
+	FetchHopsForAttempts(ctx context.Context, htlcAttemptIndices []int64) ([]FetchHopsForAttemptsRow, error)
+	FetchHtlcAttemptsForPayments(ctx context.Context, paymentIds []int64) ([]FetchHtlcAttemptsForPaymentsRow, error)
+	FetchPayment(ctx context.Context, paymentIdentifier []byte) (FetchPaymentRow, error)
+	FetchPaymentLevelFirstHopCustomRecords(ctx context.Context, paymentIds []int64) ([]PaymentFirstHopCustomRecord, error)
+	FetchPaymentsByIDs(ctx context.Context, paymentIds []int64) ([]FetchPaymentsByIDsRow, error)
 	// FetchPendingInvoices returns all invoices in a pending state (open or
 	// accepted). The invoices_state_idx index on the state column makes this a
 	// fast index scan rather than a full table scan.
 	FetchPendingInvoices(ctx context.Context, arg FetchPendingInvoicesParams) ([]Invoice, error)
+	FetchRouteLevelFirstHopCustomRecords(ctx context.Context, htlcAttemptIndices []int64) ([]PaymentAttemptFirstHopCustomRecord, error)
 	FetchSettledAMPSubInvoices(ctx context.Context, arg FetchSettledAMPSubInvoicesParams) ([]FetchSettledAMPSubInvoicesRow, error)
 	// FilterInvoicesByAddIndex returns invoices whose add_index (primary key id)
 	// is greater than or equal to the given value, ordered by id. Because id is
@@ -58,6 +68,7 @@ type Querier interface {
 	// It returns invoices in descending id order up to and including add_index_let.
 	// See FilterInvoicesForward for the expected Go-side defaults.
 	FilterInvoicesReverse(ctx context.Context, arg FilterInvoicesReverseParams) ([]Invoice, error)
+	FilterPayments(ctx context.Context, arg FilterPaymentsParams) ([]FilterPaymentsRow, error)
 	GetAMPInvoiceID(ctx context.Context, setID []byte) (int64, error)
 	GetChannelAndNodesBySCID(ctx context.Context, arg GetChannelAndNodesBySCIDParams) (GetChannelAndNodesBySCIDRow, error)
 	GetChannelByOutpointWithPolicies(ctx context.Context, arg GetChannelByOutpointWithPoliciesParams) (GetChannelByOutpointWithPoliciesRow, error)
diff --git a/sqldb/sqlc/queries/payments.sql b/sqldb/sqlc/queries/payments.sql
new file mode 100644
index 0000000..ce43a3e
--- /dev/null
+++ b/sqldb/sqlc/queries/payments.sql
@@ -0,0 +1,153 @@
+/* ─────────────────────────────────────────────
+   fetch queries
+   ─────────────────────────────────────────────
+*/
+
+-- name: FilterPayments :many
+SELECT
+    sqlc.embed(p),
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE (
+    p.id > sqlc.narg('index_offset_get') OR
+    sqlc.narg('index_offset_get') IS NULL
+) AND (
+    p.id < sqlc.narg('index_offset_let') OR
+    sqlc.narg('index_offset_let') IS NULL
+) AND (
+    p.created_at >= sqlc.narg('created_after') OR
+    sqlc.narg('created_after') IS NULL
+) AND (
+    p.created_at <= sqlc.narg('created_before') OR
+    sqlc.narg('created_before') IS NULL
+) AND (
+    i.intent_type = sqlc.narg('intent_type') OR
+    sqlc.narg('intent_type') IS NULL OR i.intent_type IS NULL
+)
+ORDER BY
+    CASE WHEN sqlc.narg('reverse') = false OR sqlc.narg('reverse') IS NULL THEN p.id END ASC,
+    CASE WHEN sqlc.narg('reverse') = true THEN p.id END DESC
+LIMIT @num_limit;
+
+-- name: FetchPayment :one
+SELECT
+    sqlc.embed(p),
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE p.payment_identifier = $1;
+
+-- name: FetchPaymentsByIDs :many
+SELECT
+    sqlc.embed(p),
+    i.intent_type AS "intent_type",
+    i.intent_payload AS "intent_payload"
+FROM payments p
+LEFT JOIN payment_intents i ON i.id = p.intent_id
+WHERE p.id IN (sqlc.slice('payment_ids')/*SLICE:payment_ids*/);
+
+-- name: CountPayments :one
+SELECT COUNT(*) FROM payments;
+
+-- name: FetchHtlcAttemptsForPayments :many
+SELECT
+    ha.id,
+    ha.attempt_index,
+    ha.payment_id,
+    ha.session_key,
+    ha.attempt_time,
+    ha.payment_hash,
+    ha.first_hop_amount_msat,
+    ha.route_total_time_lock,
+    ha.route_total_amount,
+    ha.route_source_key,
+    hr.resolution_type,
+    hr.resolution_time,
+    hr.failure_source_index,
+    hr.htlc_fail_reason,
+    hr.failure_msg,
+    hr.settle_preimage
+FROM payment_htlc_attempts ha
+LEFT JOIN payment_htlc_attempt_resolutions hr ON hr.attempt_index = ha.attempt_index
+WHERE ha.payment_id IN (sqlc.slice('payment_ids')/*SLICE:payment_ids*/)
+ORDER BY ha.payment_id ASC, ha.attempt_time ASC;
+
+-- name: FetchAllInflightAttempts :many
+-- Fetch all inflight attempts across all payments
+SELECT
+    ha.id,
+    ha.attempt_index,
+    ha.payment_id,
+    ha.session_key,
+    ha.attempt_time,
+    ha.payment_hash,
+    ha.first_hop_amount_msat,
+    ha.route_total_time_lock,
+    ha.route_total_amount,
+    ha.route_source_key
+FROM payment_htlc_attempts ha
+WHERE NOT EXISTS (
+    SELECT 1 FROM payment_htlc_attempt_resolutions hr
+    WHERE hr.attempt_index = ha.attempt_index
+)
+ORDER BY ha.attempt_index ASC;
+
+-- name: FetchHopsForAttempts :many
+SELECT
+    h.id,
+    h.htlc_attempt_index,
+    h.hop_index,
+    h.pub_key,
+    h.scid,
+    h.outgoing_time_lock,
+    h.amt_to_forward,
+    h.meta_data,
+    m.payment_addr AS mpp_payment_addr,
+    m.total_msat AS mpp_total_msat,
+    a.root_share AS amp_root_share,
+    a.set_id AS amp_set_id,
+    a.child_index AS amp_child_index,
+    b.encrypted_data,
+    b.blinding_point,
+    b.blinded_path_total_amt
+FROM payment_route_hops h
+LEFT JOIN payment_route_hop_mpp m ON m.hop_id = h.id
+LEFT JOIN payment_route_hop_amp a ON a.hop_id = h.id
+LEFT JOIN payment_route_hop_blinded b ON b.hop_id = h.id
+WHERE h.htlc_attempt_index IN (sqlc.slice('htlc_attempt_indices')/*SLICE:htlc_attempt_indices*/)
+ORDER BY h.htlc_attempt_index ASC, h.hop_index ASC;
+
+
+-- name: FetchPaymentLevelFirstHopCustomRecords :many
+SELECT
+    l.id,
+    l.payment_id,
+    l.key,
+    l.value
+FROM payment_first_hop_custom_records l
+WHERE l.payment_id IN (sqlc.slice('payment_ids')/*SLICE:payment_ids*/)
+ORDER BY l.payment_id ASC, l.key ASC;
+
+-- name: FetchRouteLevelFirstHopCustomRecords :many
+SELECT
+    l.id,
+    l.htlc_attempt_index,
+    l.key,
+    l.value
+FROM payment_attempt_first_hop_custom_records l
+WHERE l.htlc_attempt_index IN (sqlc.slice('htlc_attempt_indices')/*SLICE:htlc_attempt_indices*/)
+ORDER BY l.htlc_attempt_index ASC, l.key ASC;
+
+-- name: FetchHopLevelCustomRecords :many
+SELECT
+    l.id,
+    l.hop_id,
+    l.key,
+    l.value
+FROM payment_hop_custom_records l
+WHERE l.hop_id IN (sqlc.slice('hop_ids')/*SLICE:hop_ids*/)
+ORDER BY l.hop_id ASC, l.key ASC;
+