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fix another issue with dependencies
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6cf3e5b77a
commit
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@ -12,6 +12,8 @@
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#include <Parsers/ASTLiteral.h>
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#include <Parsers/ASTSelectWithUnionQuery.h>
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#include <Parsers/ASTTablesInSelectQuery.h>
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#include <Parsers/ParserSelectWithUnionQuery.h>
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#include <Parsers/parseQuery.h>
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#include <Common/KnownObjectNames.h>
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#include <Poco/String.h>
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@ -25,6 +27,7 @@ namespace
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/// Used to visits ASTCreateQuery and extracts the names of all tables explicitly referenced in the create query.
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class DDLDependencyVisitorData
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{
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friend void tryVisitNestedSelect(const String & query, DDLDependencyVisitorData & data);
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public:
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DDLDependencyVisitorData(const ContextPtr & context_, const QualifiedTableName & table_name_, const ASTPtr & ast_)
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: create_query(ast_), table_name(table_name_), current_database(context_->getCurrentDatabase()), context(context_)
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@ -106,9 +109,17 @@ namespace
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if (!info || !info->is_local)
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return;
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if (info->table_name.database.empty())
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info->table_name.database = current_database;
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dependencies.emplace(std::move(info->table_name));
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if (!info->table_name.table.empty())
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{
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if (info->table_name.database.empty())
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info->table_name.database = current_database;
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dependencies.emplace(std::move(info->table_name));
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}
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else
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{
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/// We don't have a table name, we have a select query instead
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tryVisitNestedSelect(info->query, *this);
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}
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}
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/// ASTTableExpression represents a reference to a table in SELECT query.
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@ -424,6 +435,24 @@ namespace
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static bool needChildVisit(const ASTPtr &, const ASTPtr & child, const Data & data) { return data.needChildVisit(child); }
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static void visit(const ASTPtr & ast, Data & data) { data.visit(ast); }
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};
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void tryVisitNestedSelect(const String & query, DDLDependencyVisitorData & data)
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{
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try
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{
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ParserSelectWithUnionQuery parser;
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String description = fmt::format("Query for ClickHouse dictionary {}", data.table_name);
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ASTPtr select = parseQuery(parser, query, description,
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data.context->getSettingsRef().max_query_size, data.context->getSettingsRef().max_parser_depth);
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DDLDependencyVisitor::Visitor visitor{data};
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visitor.visit(select);
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}
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catch (...)
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{
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tryLogCurrentException("DDLDependencyVisitor");
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}
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}
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}
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@ -103,7 +103,7 @@ void DDLLoadingDependencyVisitor::visit(const ASTFunctionWithKeyValueArguments &
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auto config = getDictionaryConfigurationFromAST(data.create_query->as<ASTCreateQuery &>(), data.global_context);
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auto info = getInfoIfClickHouseDictionarySource(config, data.global_context);
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if (!info || !info->is_local)
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if (!info || !info->is_local || info->table_name.table.empty())
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return;
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if (info->table_name.database.empty())
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@ -137,7 +137,7 @@ namespace
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auto config = getDictionaryConfigurationFromAST(data.create_query->as<ASTCreateQuery &>(), data.global_context);
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auto info = getInfoIfClickHouseDictionarySource(config, data.global_context);
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if (!info || !info->is_local)
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if (!info || !info->is_local || info->table_name.table.empty())
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return;
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auto * source_list = dictionary.source->elements->as<ASTExpressionList>();
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@ -649,10 +649,12 @@ getInfoIfClickHouseDictionarySource(DictionaryConfigurationPtr & config, Context
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String database = config->getString("dictionary.source.clickhouse.db", "");
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String table = config->getString("dictionary.source.clickhouse.table", "");
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if (table.empty())
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return {};
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info.query = config->getString("dictionary.source.clickhouse.query", "");
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info.table_name = {database, table};
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if (!table.empty())
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info.table_name = {database, table};
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else if (info.query.empty())
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return {};
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try
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{
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@ -18,6 +18,7 @@ getDictionaryConfigurationFromAST(const ASTCreateQuery & query, ContextPtr conte
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struct ClickHouseDictionarySourceInfo
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{
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QualifiedTableName table_name;
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String query;
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bool is_local = false;
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};
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@ -210,4 +210,8 @@ def test_no_lazy_load():
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assert "42\n" == node2.query("select dictGet('no_lazy.dict', 'mm', 42)")
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assert "some tables depend on it" in node2.query_and_get_error(
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"drop table no_lazy.src", settings={"check_referential_table_dependencies": 1}
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)
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node2.query("drop database no_lazy")
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