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#pragma once
#include <Core/NamesAndTypes.h>
#include <Interpreters/Context_fwd.h>
#include <Interpreters/DatabaseAndTableWithAlias.h>
namespace DB
{
struct ASTTableExpression;
class ASTSelectQuery;
using ASTTableExprConstPtrs = std::vector<const ASTTableExpression *>;
NameSet removeDuplicateColumns(NamesAndTypesList & columns);
ASTTableExprConstPtrs getTableExpressions(const ASTSelectQuery & select_query);
const ASTTableExpression * getTableExpression(const ASTSelectQuery & select, size_t table_number);
ASTPtr extractTableExpression(const ASTSelectQuery & select, size_t table_number);
/// The parameter is_create_parameterized_view is used in getSampleBlock of the subquery. It is forwarded to getColumnsFromTableExpression.
/// If it is set to true, then query parameters are allowed in the subquery, and that expression is not evaluated.
TablesWithColumns getDatabaseAndTablesWithColumns(
const ASTTableExprConstPtrs & table_expressions, ContextPtr context, bool include_alias_cols, bool include_materialized_cols, bool is_create_parameterized_view = false);
}
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