signoz/pkg/telemetrylogs/statement_builder.go

package telemetrylogs

import (
	"context"
	"fmt"
	"log/slog"
	"strings"

	"github.com/SigNoz/signoz/pkg/errors"
	"github.com/SigNoz/signoz/pkg/factory"
	"github.com/SigNoz/signoz/pkg/querybuilder"
	qbtypes "github.com/SigNoz/signoz/pkg/types/querybuildertypes/querybuildertypesv5"
	"github.com/SigNoz/signoz/pkg/types/telemetrytypes"
	"github.com/huandu/go-sqlbuilder"
)

type logQueryStatementBuilder struct {
	logger                    *slog.Logger
	metadataStore             telemetrytypes.MetadataStore
	fm                        qbtypes.FieldMapper
	cb                        qbtypes.ConditionBuilder
	resourceFilterStmtBuilder qbtypes.StatementBuilder[qbtypes.LogAggregation]
	aggExprRewriter           qbtypes.AggExprRewriter

	fullTextColumn *telemetrytypes.TelemetryFieldKey
	jsonKeyToKey   qbtypes.JsonKeyToFieldFunc
}

var _ qbtypes.StatementBuilder[qbtypes.LogAggregation] = (*logQueryStatementBuilder)(nil)

func NewLogQueryStatementBuilder(
	settings factory.ProviderSettings,
	metadataStore telemetrytypes.MetadataStore,
	fieldMapper qbtypes.FieldMapper,
	conditionBuilder qbtypes.ConditionBuilder,
	resourceFilterStmtBuilder qbtypes.StatementBuilder[qbtypes.LogAggregation],
	aggExprRewriter qbtypes.AggExprRewriter,
	fullTextColumn *telemetrytypes.TelemetryFieldKey,
	jsonKeyToKey qbtypes.JsonKeyToFieldFunc,
) *logQueryStatementBuilder {
	logsSettings := factory.NewScopedProviderSettings(settings, "github.com/SigNoz/signoz/pkg/telemetrylogs")

	return &logQueryStatementBuilder{
		logger:                    logsSettings.Logger(),
		metadataStore:             metadataStore,
		fm:                        fieldMapper,
		cb:                        conditionBuilder,
		resourceFilterStmtBuilder: resourceFilterStmtBuilder,
		aggExprRewriter:           aggExprRewriter,
		fullTextColumn:            fullTextColumn,
		jsonKeyToKey:              jsonKeyToKey,
	}
}

// Build builds a SQL query for logs based on the given parameters
func (b *logQueryStatementBuilder) Build(
	ctx context.Context,
	start uint64,
	end uint64,
	requestType qbtypes.RequestType,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	variables map[string]qbtypes.VariableItem,
) (*qbtypes.Statement, error) {

	start = querybuilder.ToNanoSecs(start)
	end = querybuilder.ToNanoSecs(end)

	keySelectors := getKeySelectors(query)
	keys, _, err := b.metadataStore.GetKeysMulti(ctx, keySelectors)
	if err != nil {
		return nil, err
	}

	query = b.adjustKeys(ctx, keys, query, requestType)

	// Create SQL builder
	q := sqlbuilder.NewSelectBuilder()

	switch requestType {
	case qbtypes.RequestTypeRaw, qbtypes.RequestTypeRawStream:
		return b.buildListQuery(ctx, q, query, start, end, keys, variables)
	case qbtypes.RequestTypeTimeSeries:
		return b.buildTimeSeriesQuery(ctx, q, query, start, end, keys, variables)
	case qbtypes.RequestTypeScalar:
		return b.buildScalarQuery(ctx, q, query, start, end, keys, false, variables)
	}

	return nil, errors.NewInvalidInputf(errors.CodeInvalidInput, "unsupported request type: %s", requestType)
}

func getKeySelectors(query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation]) []*telemetrytypes.FieldKeySelector {
	var keySelectors []*telemetrytypes.FieldKeySelector

	for idx := range query.Aggregations {
		aggExpr := query.Aggregations[idx]
		selectors := querybuilder.QueryStringToKeysSelectors(aggExpr.Expression)
		keySelectors = append(keySelectors, selectors...)
	}

	if query.Filter != nil && query.Filter.Expression != "" {
		whereClauseSelectors := querybuilder.QueryStringToKeysSelectors(query.Filter.Expression)
		keySelectors = append(keySelectors, whereClauseSelectors...)
	}

	for idx := range query.GroupBy {
		groupBy := query.GroupBy[idx]
		keySelectors = append(keySelectors, &telemetrytypes.FieldKeySelector{
			Name:          groupBy.Name,
			Signal:        telemetrytypes.SignalLogs,
			FieldContext:  groupBy.FieldContext,
			FieldDataType: groupBy.FieldDataType,
		})
	}

	for idx := range query.SelectFields {
		selectField := query.SelectFields[idx]
		keySelectors = append(keySelectors, &telemetrytypes.FieldKeySelector{
			Name:          selectField.Name,
			Signal:        telemetrytypes.SignalLogs,
			FieldContext:  selectField.FieldContext,
			FieldDataType: selectField.FieldDataType,
		})
	}

	for idx := range query.Order {
		keySelectors = append(keySelectors, &telemetrytypes.FieldKeySelector{
			Name:          query.Order[idx].Key.Name,
			Signal:        telemetrytypes.SignalLogs,
			FieldContext:  query.Order[idx].Key.FieldContext,
			FieldDataType: query.Order[idx].Key.FieldDataType,
		})
	}

	for idx := range keySelectors {
		keySelectors[idx].Signal = telemetrytypes.SignalLogs
		keySelectors[idx].SelectorMatchType = telemetrytypes.FieldSelectorMatchTypeExact
	}

	return keySelectors
}

func (b *logQueryStatementBuilder) adjustKeys(ctx context.Context, keys map[string][]*telemetrytypes.TelemetryFieldKey, query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation], requestType qbtypes.RequestType) qbtypes.QueryBuilderQuery[qbtypes.LogAggregation] {

	// Always ensure timestamp and id are present in keys map
	keys["id"] = append([]*telemetrytypes.TelemetryFieldKey{{
		Name:          "id",
		Signal:        telemetrytypes.SignalLogs,
		FieldContext:  telemetrytypes.FieldContextLog,
		FieldDataType: telemetrytypes.FieldDataTypeString,
	}}, keys["id"]...)

	keys["timestamp"] = append([]*telemetrytypes.TelemetryFieldKey{{
		Name:          "timestamp",
		Signal:        telemetrytypes.SignalLogs,
		FieldContext:  telemetrytypes.FieldContextLog,
		FieldDataType: telemetrytypes.FieldDataTypeNumber,
	}}, keys["timestamp"]...)

	/*
		Adjust keys for alias expressions in aggregations
	*/
	actions := querybuilder.AdjustKeysForAliasExpressions(&query, requestType)

	/*
		Check if user is using multiple contexts or data types for same field name
		Idea is to use a super set of keys that can satisfy all the usages

		For example, lets consider model_id exists in both attributes and resources
		And user is trying to use `attribute.model_id` and `model_id`.

		In this case, we'll remove the context from `attribute.model_id`
		and make it just `model_id` and remove the duplicate entry.

		Same goes with data types.
		Consider user is using http.status_code:number and http.status_code
		In this case, we'll remove the data type from http.status_code:number
		and make it just http.status_code and remove the duplicate entry.
	*/

	actions = append(actions, querybuilder.AdjustDuplicateKeys(&query)...)

	/*
		Now adjust each key to have correct context and data type
		Here we try to make intelligent guesses which work for all users (not just majority)
		Reason for doing this is to not create an unexpected behavior for users
	*/
	for idx := range query.SelectFields {
		actions = append(actions, b.adjustKey(&query.SelectFields[idx], keys)...)
	}
	for idx := range query.GroupBy {
		actions = append(actions, b.adjustKey(&query.GroupBy[idx].TelemetryFieldKey, keys)...)
	}
	for idx := range query.Order {
		actions = append(actions, b.adjustKey(&query.Order[idx].Key.TelemetryFieldKey, keys)...)
	}

	for _, action := range actions {
		// TODO: change to debug level once we are confident about the behavior
		b.logger.InfoContext(ctx, "key adjustment action", "action", action)
	}

	return query
}

func (b *logQueryStatementBuilder) adjustKey(key *telemetrytypes.TelemetryFieldKey, keys map[string][]*telemetrytypes.TelemetryFieldKey) []string {

	// First check if it matches with any intrinsic fields
	var intrinsicOrCalculatedField telemetrytypes.TelemetryFieldKey
	if _, ok := IntrinsicFields[key.Name]; ok {
		intrinsicOrCalculatedField = IntrinsicFields[key.Name]
		return querybuilder.AdjustKey(key, keys, &intrinsicOrCalculatedField)
	}

	return querybuilder.AdjustKey(key, keys, nil)

}

// buildListQuery builds a query for list panel type
func (b *logQueryStatementBuilder) buildListQuery(
	ctx context.Context,
	sb *sqlbuilder.SelectBuilder,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	start, end uint64,
	keys map[string][]*telemetrytypes.TelemetryFieldKey,
	variables map[string]qbtypes.VariableItem,
) (*qbtypes.Statement, error) {

	var (
		cteFragments []string
		cteArgs      [][]any
	)

	if frag, args, err := b.maybeAttachResourceFilter(ctx, sb, query, start, end, variables); err != nil {
		return nil, err
	} else if frag != "" {
		cteFragments = append(cteFragments, frag)
		cteArgs = append(cteArgs, args)
	}

	// Select timestamp and id by default
	sb.Select(LogsV2TimestampColumn)
	sb.SelectMore(LogsV2IDColumn)
	if len(query.SelectFields) == 0 {
		// Select all default columns
		sb.SelectMore(LogsV2TraceIDColumn)
		sb.SelectMore(LogsV2SpanIDColumn)
		sb.SelectMore(LogsV2TraceFlagsColumn)
		sb.SelectMore(LogsV2SeverityTextColumn)
		sb.SelectMore(LogsV2SeverityNumberColumn)
		sb.SelectMore(LogsV2ScopeNameColumn)
		sb.SelectMore(LogsV2ScopeVersionColumn)
		sb.SelectMore(LogsV2BodyColumn)
		if querybuilder.BodyJSONQueryEnabled {
			sb.SelectMore(LogsV2BodyJSONColumn)
			sb.SelectMore(LogsV2BodyPromotedColumn)
		}
		sb.SelectMore(LogsV2AttributesStringColumn)
		sb.SelectMore(LogsV2AttributesNumberColumn)
		sb.SelectMore(LogsV2AttributesBoolColumn)
		sb.SelectMore(LogsV2ResourcesStringColumn)
		sb.SelectMore(LogsV2ScopeStringColumn)

	} else {
		// Select specified columns
		for index := range query.SelectFields {
			if query.SelectFields[index].Name == LogsV2TimestampColumn || query.SelectFields[index].Name == LogsV2IDColumn {
				continue
			}

			// get column expression for the field - use array index directly to avoid pointer to loop variable
			colExpr, err := b.fm.ColumnExpressionFor(ctx, &query.SelectFields[index], keys)
			if err != nil {
				return nil, err
			}
			sb.SelectMore(colExpr)
		}
	}

	sb.From(fmt.Sprintf("%s.%s", DBName, LogsV2TableName))

	// Add filter conditions
	preparedWhereClause, err := b.addFilterCondition(ctx, sb, start, end, query, keys, variables)

	if err != nil {
		return nil, err
	}

	// Add order by
	for _, orderBy := range query.Order {
		colExpr, err := b.fm.ColumnExpressionFor(ctx, &orderBy.Key.TelemetryFieldKey, keys)
		if err != nil {
			return nil, err
		}
		sb.OrderBy(fmt.Sprintf("%s %s", colExpr, orderBy.Direction.StringValue()))
	}

	// Add limit and offset
	if query.Limit > 0 {
		sb.Limit(query.Limit)
	} else {
		sb.Limit(100)
	}

	if query.Offset > 0 {
		sb.Offset(query.Offset)
	}

	mainSQL, mainArgs := sb.BuildWithFlavor(sqlbuilder.ClickHouse)

	finalSQL := querybuilder.CombineCTEs(cteFragments) + mainSQL
	finalArgs := querybuilder.PrependArgs(cteArgs, mainArgs)

	stmt := &qbtypes.Statement{
		Query: finalSQL,
		Args:  finalArgs,
	}
	if preparedWhereClause != nil {
		stmt.Warnings = preparedWhereClause.Warnings
		stmt.WarningsDocURL = preparedWhereClause.WarningsDocURL
	}

	return stmt, nil
}

func (b *logQueryStatementBuilder) buildTimeSeriesQuery(
	ctx context.Context,
	sb *sqlbuilder.SelectBuilder,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	start, end uint64,
	keys map[string][]*telemetrytypes.TelemetryFieldKey,
	variables map[string]qbtypes.VariableItem,
) (*qbtypes.Statement, error) {

	var (
		cteFragments []string
		cteArgs      [][]any
	)

	if frag, args, err := b.maybeAttachResourceFilter(ctx, sb, query, start, end, variables); err != nil {
		return nil, err
	} else if frag != "" {
		cteFragments = append(cteFragments, frag)
		cteArgs = append(cteArgs, args)
	}

	sb.SelectMore(fmt.Sprintf(
		"toStartOfInterval(fromUnixTimestamp64Nano(timestamp), INTERVAL %d SECOND) AS ts",
		int64(query.StepInterval.Seconds()),
	))

	var allGroupByArgs []any

	// Keep original column expressions so we can build the tuple
	fieldNames := make([]string, 0, len(query.GroupBy))
	for _, gb := range query.GroupBy {
		expr, args, err := querybuilder.CollisionHandledFinalExpr(ctx, &gb.TelemetryFieldKey, b.fm, b.cb, keys, telemetrytypes.FieldDataTypeString, b.jsonKeyToKey)
		if err != nil {
			return nil, err
		}

		colExpr := fmt.Sprintf("toString(%s) AS `%s`", expr, gb.TelemetryFieldKey.Name)
		allGroupByArgs = append(allGroupByArgs, args...)
		sb.SelectMore(colExpr)
		fieldNames = append(fieldNames, fmt.Sprintf("`%s`", gb.TelemetryFieldKey.Name))
	}

	// Aggregations
	allAggChArgs := make([]any, 0)
	for i, agg := range query.Aggregations {
		rewritten, chArgs, err := b.aggExprRewriter.Rewrite(
			ctx, agg.Expression,
			uint64(query.StepInterval.Seconds()),
			keys,
		)
		if err != nil {
			return nil, err
		}
		allAggChArgs = append(allAggChArgs, chArgs...)
		sb.SelectMore(fmt.Sprintf("%s AS __result_%d", rewritten, i))
	}

	// Add FROM clause
	sb.From(fmt.Sprintf("%s.%s", DBName, LogsV2TableName))

	preparedWhereClause, err := b.addFilterCondition(ctx, sb, start, end, query, keys, variables)

	if err != nil {
		return nil, err
	}

	var finalSQL string
	var finalArgs []any

	if query.Limit > 0 && len(query.GroupBy) > 0 {
		// build the scalar “top/bottom-N” query in its own builder.
		cteSB := sqlbuilder.NewSelectBuilder()
		cteStmt, err := b.buildScalarQuery(ctx, cteSB, query, start, end, keys, true, variables)
		if err != nil {
			return nil, err
		}

		cteFragments = append(cteFragments, fmt.Sprintf("__limit_cte AS (%s)", cteStmt.Query))
		cteArgs = append(cteArgs, cteStmt.Args)

		// Constrain the main query to the rows that appear in the CTE.
		tuple := fmt.Sprintf("(%s)", strings.Join(fieldNames, ", "))
		sb.Where(fmt.Sprintf("%s GLOBAL IN (SELECT %s FROM __limit_cte)", tuple, strings.Join(fieldNames, ", ")))

		// Group by all dimensions
		sb.GroupBy("ts")
		sb.GroupBy(querybuilder.GroupByKeys(query.GroupBy)...)
		if query.Having != nil && query.Having.Expression != "" {
			// Rewrite having expression to use SQL column names
			rewriter := querybuilder.NewHavingExpressionRewriter()
			rewrittenExpr := rewriter.RewriteForLogs(query.Having.Expression, query.Aggregations)
			sb.Having(rewrittenExpr)
		}

		if len(query.Order) != 0 {
			for _, orderBy := range query.Order {
				_, ok := aggOrderBy(orderBy, query)
				if !ok {
					sb.OrderBy(fmt.Sprintf("`%s` %s", orderBy.Key.Name, orderBy.Direction.StringValue()))
				}
			}
			sb.OrderBy("ts desc")
		}

		combinedArgs := append(allGroupByArgs, allAggChArgs...)
		mainSQL, mainArgs := sb.BuildWithFlavor(sqlbuilder.ClickHouse, combinedArgs...)

		// Stitch it all together:  WITH … SELECT …
		finalSQL = querybuilder.CombineCTEs(cteFragments) + mainSQL
		finalArgs = querybuilder.PrependArgs(cteArgs, mainArgs)

	} else {
		sb.GroupBy("ts")
		sb.GroupBy(querybuilder.GroupByKeys(query.GroupBy)...)
		if query.Having != nil && query.Having.Expression != "" {
			rewriter := querybuilder.NewHavingExpressionRewriter()
			rewrittenExpr := rewriter.RewriteForLogs(query.Having.Expression, query.Aggregations)
			sb.Having(rewrittenExpr)
		}

		if len(query.Order) != 0 {
			for _, orderBy := range query.Order {
				_, ok := aggOrderBy(orderBy, query)
				if !ok {
					sb.OrderBy(fmt.Sprintf("`%s` %s", orderBy.Key.Name, orderBy.Direction.StringValue()))
				}
			}
			sb.OrderBy("ts desc")
		}

		combinedArgs := append(allGroupByArgs, allAggChArgs...)
		mainSQL, mainArgs := sb.BuildWithFlavor(sqlbuilder.ClickHouse, combinedArgs...)

		// Stitch it all together:  WITH … SELECT …
		finalSQL = querybuilder.CombineCTEs(cteFragments) + mainSQL
		finalArgs = querybuilder.PrependArgs(cteArgs, mainArgs)
	}

	stmt := &qbtypes.Statement{
		Query: finalSQL,
		Args:  finalArgs,
	}
	if preparedWhereClause != nil {
		stmt.Warnings = preparedWhereClause.Warnings
		stmt.WarningsDocURL = preparedWhereClause.WarningsDocURL
	}

	return stmt, nil
}

// buildScalarQuery builds a query for scalar panel type
func (b *logQueryStatementBuilder) buildScalarQuery(
	ctx context.Context,
	sb *sqlbuilder.SelectBuilder,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	start, end uint64,
	keys map[string][]*telemetrytypes.TelemetryFieldKey,
	skipResourceCTE bool,
	variables map[string]qbtypes.VariableItem,
) (*qbtypes.Statement, error) {

	var (
		cteFragments []string
		cteArgs      [][]any
	)

	if frag, args, err := b.maybeAttachResourceFilter(ctx, sb, query, start, end, variables); err != nil {
		return nil, err
	} else if frag != "" && !skipResourceCTE {
		cteFragments = append(cteFragments, frag)
		cteArgs = append(cteArgs, args)
	}

	allAggChArgs := []any{}

	var allGroupByArgs []any

	for _, gb := range query.GroupBy {
		expr, args, err := querybuilder.CollisionHandledFinalExpr(ctx, &gb.TelemetryFieldKey, b.fm, b.cb, keys, telemetrytypes.FieldDataTypeString, b.jsonKeyToKey)
		if err != nil {
			return nil, err
		}

		colExpr := fmt.Sprintf("toString(%s) AS `%s`", expr, gb.TelemetryFieldKey.Name)
		allGroupByArgs = append(allGroupByArgs, args...)
		sb.SelectMore(colExpr)
	}

	// for scalar queries, the rate would be end-start
	rateInterval := (end - start) / querybuilder.NsToSeconds

	// Add aggregation
	if len(query.Aggregations) > 0 {
		for idx := range query.Aggregations {
			aggExpr := query.Aggregations[idx]
			rewritten, chArgs, err := b.aggExprRewriter.Rewrite(
				ctx, aggExpr.Expression,
				rateInterval,
				keys,
			)
			if err != nil {
				return nil, err
			}
			allAggChArgs = append(allAggChArgs, chArgs...)
			sb.SelectMore(fmt.Sprintf("%s AS __result_%d", rewritten, idx))
		}
	}

	sb.From(fmt.Sprintf("%s.%s", DBName, LogsV2TableName))

	// Add filter conditions
	preparedWhereClause, err := b.addFilterCondition(ctx, sb, start, end, query, keys, variables)

	if err != nil {
		return nil, err
	}

	// Group by dimensions
	sb.GroupBy(querybuilder.GroupByKeys(query.GroupBy)...)

	// Add having clause if needed
	if query.Having != nil && query.Having.Expression != "" {
		rewriter := querybuilder.NewHavingExpressionRewriter()
		rewrittenExpr := rewriter.RewriteForLogs(query.Having.Expression, query.Aggregations)
		sb.Having(rewrittenExpr)
	}

	// Add order by
	for _, orderBy := range query.Order {
		idx, ok := aggOrderBy(orderBy, query)
		if ok {
			sb.OrderBy(fmt.Sprintf("__result_%d %s", idx, orderBy.Direction.StringValue()))
		} else {
			sb.OrderBy(fmt.Sprintf("`%s` %s", orderBy.Key.Name, orderBy.Direction.StringValue()))
		}
	}

	// if there is no order by, then use the __result_0 as the order by
	if len(query.Order) == 0 {
		sb.OrderBy("__result_0 DESC")
	}

	// Add limit and offset
	if query.Limit > 0 {
		sb.Limit(query.Limit)
	}

	combinedArgs := append(allGroupByArgs, allAggChArgs...)

	mainSQL, mainArgs := sb.BuildWithFlavor(sqlbuilder.ClickHouse, combinedArgs...)

	finalSQL := querybuilder.CombineCTEs(cteFragments) + mainSQL
	finalArgs := querybuilder.PrependArgs(cteArgs, mainArgs)

	stmt := &qbtypes.Statement{
		Query: finalSQL,
		Args:  finalArgs,
	}
	if preparedWhereClause != nil {
		stmt.Warnings = preparedWhereClause.Warnings
		stmt.WarningsDocURL = preparedWhereClause.WarningsDocURL
	}

	return stmt, nil
}

// buildFilterCondition builds SQL condition from filter expression
func (b *logQueryStatementBuilder) addFilterCondition(
	_ context.Context,
	sb *sqlbuilder.SelectBuilder,
	start, end uint64,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	keys map[string][]*telemetrytypes.TelemetryFieldKey,
	variables map[string]qbtypes.VariableItem,
) (*querybuilder.PreparedWhereClause, error) {

	var preparedWhereClause *querybuilder.PreparedWhereClause
	var err error

	if query.Filter != nil && query.Filter.Expression != "" {
		// add filter expression
		preparedWhereClause, err = querybuilder.PrepareWhereClause(query.Filter.Expression, querybuilder.FilterExprVisitorOpts{
			Logger:             b.logger,
			FieldMapper:        b.fm,
			ConditionBuilder:   b.cb,
			FieldKeys:          keys,
			SkipResourceFilter: true,
			FullTextColumn:     b.fullTextColumn,
			JsonKeyToKey:       b.jsonKeyToKey,
			Variables:          variables,
		}, start, end)

		if err != nil {
			return nil, err
		}
	}

	if preparedWhereClause != nil {
		sb.AddWhereClause(preparedWhereClause.WhereClause)
	}

	// add time filter
	startBucket := start/querybuilder.NsToSeconds - querybuilder.BucketAdjustment
	var endBucket uint64
	if end != 0 {
		endBucket = end / querybuilder.NsToSeconds
	}

	if start != 0 {
		sb.Where(sb.GE("timestamp", fmt.Sprintf("%d", start)), sb.GE("ts_bucket_start", startBucket))
	}
	if end != 0 {
		sb.Where(sb.L("timestamp", fmt.Sprintf("%d", end)), sb.LE("ts_bucket_start", endBucket))
	}

	return preparedWhereClause, nil
}

func aggOrderBy(k qbtypes.OrderBy, q qbtypes.QueryBuilderQuery[qbtypes.LogAggregation]) (int, bool) {
	for i, agg := range q.Aggregations {
		if k.Key.Name == agg.Alias ||
			k.Key.Name == agg.Expression ||
			k.Key.Name == fmt.Sprintf("%d", i) {
			return i, true
		}
	}
	return 0, false
}

func (b *logQueryStatementBuilder) maybeAttachResourceFilter(
	ctx context.Context,
	sb *sqlbuilder.SelectBuilder,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	start, end uint64,
	variables map[string]qbtypes.VariableItem,
) (cteSQL string, cteArgs []any, err error) {

	stmt, err := b.buildResourceFilterCTE(ctx, query, start, end, variables)
	if err != nil {
		return "", nil, err
	}

	sb.Where("resource_fingerprint GLOBAL IN (SELECT fingerprint FROM __resource_filter)")

	return fmt.Sprintf("__resource_filter AS (%s)", stmt.Query), stmt.Args, nil
}

func (b *logQueryStatementBuilder) buildResourceFilterCTE(
	ctx context.Context,
	query qbtypes.QueryBuilderQuery[qbtypes.LogAggregation],
	start, end uint64,
	variables map[string]qbtypes.VariableItem,
) (*qbtypes.Statement, error) {
	return b.resourceFilterStmtBuilder.Build(
		ctx,
		start,
		end,
		qbtypes.RequestTypeRaw,
		query,
		variables,
	)
}