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#include <Interpreters/FunctionNameNormalizer.h>
#include <Parsers/ASTColumnDeclaration.h>
#include <Parsers/ASTCreateQuery.h>
#include <Parsers/ASTFunction.h>
#include <Functions/FunctionFactory.h>
#include <AggregateFunctions/AggregateFunctionFactory.h>
namespace DB
{
void FunctionNameNormalizer::visit(IAST * ast)
{
if (!ast)
return;
// Normalize only selected children. Avoid normalizing engine clause because some engine might
// have the same name as function, e.g. Log.
if (auto * node_storage = ast->as<ASTStorage>())
{
visit(node_storage->partition_by);
visit(node_storage->primary_key);
visit(node_storage->order_by);
visit(node_storage->sample_by);
visit(node_storage->ttl_table);
return;
}
// Normalize only selected children. Avoid normalizing type clause because some type might
// have the same name as function, e.g. Date.
if (auto * node_decl = ast->as<ASTColumnDeclaration>())
{
visit(node_decl->default_expression.get());
visit(node_decl->ttl.get());
return;
}
if (auto * node_func = ast->as<ASTFunction>())
node_func->name = getAggregateFunctionCanonicalNameIfAny(getFunctionCanonicalNameIfAny(node_func->name));
for (auto & child : ast->children)
visit(child.get());
}
}
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