Method VisitSubqueryRelation

query/sql/sql_parser.go:927–951

VisitSubqueryRelation visits the node

(ctx *antlrgen.SubqueryRelationContext)

// VisitSubqueryRelation visits the node
func (v *ASTBuilder) VisitSubqueryRelation(ctx *antlrgen.SubqueryRelationContext) interface{} {
	v.Logger.Debugf("VisitSubqueryRelation: %s", ctx.GetText())

	level, levelWith, levelQuery := v.getCtxLevels(v.SQL2AqlCtx)
	// mapKey is the mapKey of parent query
	mapKey := v.SQL2AqlCtx.mapKey
	last := len(v.SQL2AqlCtx.MapJoinTables[v.SQL2AqlCtx.mapKey]) - 1

	v.setCtxLevels(v.SQL2AqlCtx, level-1, levelWith, levelQuery+1)
	// the index in v.SQL2AqlCtx.mapKey is the index of the aliasedRelation in parent from clause
	v.SQL2AqlCtx.mapKey = v.generateKey(levelQuery+1, typeSubQuery, last)
	v.SQL2AqlCtx.MapQueryIdentifier[v.SQL2AqlCtx.mapKey] = v.SQL2AqlCtx.MapJoinTables[mapKey][last].Alias
	v.addQIdentifier(v.SQL2AqlCtx, v.SQL2AqlCtx.MapJoinTables[mapKey][last].Alias, v.SQL2AqlCtx.mapKey)
	v.SQL2AqlCtx.MapMeasures[v.SQL2AqlCtx.mapKey] = make([]queryCom.Measure, 0, defaultSliceCap)
	v.SQL2AqlCtx.MapDimensions[v.SQL2AqlCtx.mapKey] = make([]queryCom.Dimension, 0, defaultSliceCap)
	v.SQL2AqlCtx.MapJoinTables[v.SQL2AqlCtx.mapKey] = make([]queryCom.Join, 0, defaultSliceCap)
	v.SQL2AqlCtx.MapRowFilters[v.SQL2AqlCtx.mapKey] = make([]string, 0, defaultSliceCap)
	v.SQL2AqlCtx.MapOrderBy[v.SQL2AqlCtx.mapKey] = make([]queryCom.SortField, 0, defaultSliceCap)

	query, _ := v.VisitQuery(ctx.Query().(*antlrgen.QueryContext)).(*tree.Query)
	tableSubquery := tree.NewTableSubquery(v.getLocation(ctx), query)
	tableSubquery.SetValue(fmt.Sprintf("TableSubquery: (%s)", v.getText(ctx.BaseParserRuleContext)))

	return tableSubquery
}

// ********************* primary expressions **********************