ClickHouse/utils/db-generator/query_db_generator.cpp
nikitamikhaylov 724b78a578 better
2020-09-08 15:03:55 +03:00

1307 lines
40 KiB
C++

#include <boost/algorithm/string.hpp>
#include <cstdlib>
#include <iostream>
#include <pcg_random.hpp>
#include <Core/Field.h>
#include <Core/Types.h>
#include <Parsers/ASTFunction.h>
#include <Parsers/ASTIdentifier.cpp>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/ASTLiteral.h>
#include <Parsers/ASTSelectQuery.h>
#include <Parsers/ASTTablesInSelectQuery.h>
#include <Parsers/ASTWithAlias.h>
#include <Parsers/ParserQueryWithOutput.h>
#include <Parsers/formatAST.h>
#include <Parsers/parseQuery.h>
using ColumnType = uint32_t;
using TableAndColumn = std::pair<std::string, std::string>;
pcg64 rng;
std::string randomString(size_t length)
{
auto randchar = []() -> char
{
const char charset[] = "0123456789" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz";
const size_t max_index = (sizeof(charset) - 1);
return charset[rng() % max_index];
};
std::string str(length, 0);
std::generate_n(str.begin(), length, randchar);
return str;
}
std::string randomInteger(unsigned int min = 0, unsigned int max = 4294967295)
{
int r = rng() % (max - min) + min;
return std::to_string(r);
}
std::string randomFloat(unsigned int min = 0, unsigned int max = 4294967295)
{
float r = static_cast<float>(rng() % max) / (static_cast<float>(rng() % 100)) + min;
return std::to_string(r);
}
std::string randomDate()
{
int32_t year = rng() % 136 + 1970;
int32_t month = rng() % 12 + 1;
int32_t day = rng() % 12 + 1;
char ans[13];
sprintf(ans, "'%04u-%02u-%02u'", year, month, day);
return std::string(ans);
}
std::string randomDatetime()
{
int32_t year = rng() % 136 + 1970;
int32_t month = rng() % 12 + 1;
int32_t day = rng() % 12 + 1;
int32_t hours = rng() % 24;
int32_t minutes = rng() % 60;
int32_t seconds = rng() % 60;
char ans[22];
sprintf(
ans,
"'%04u-%02u-%02u %02u:%02u:%02u'",
year,
month,
day,
hours,
minutes,
seconds);
return std::string(ans);
}
TableAndColumn get_table_a_column(const std::string & c)
{
auto point_place = c.rfind('.');
std::string db{};
std::string column{};
if (point_place != std::string::npos)
{
db = c.substr(0, point_place);
column = c.substr(point_place + 1);
}
else
{
column = c;
}
return { db, column };
}
enum type : ColumnType
{
i = 1,
// int
f = 2,
// float
s = 4,
// string
d = 8,
// date
dt = 16,
// datetime
b = 32,
// bool
all = 63,
a = 64,
// array
t = 128,
// tuple
};
std::map<ColumnType, std::string> type_definition = {
{type::i, "Int64"}, {type::f, "Float64"}, {type::s, "String"}, {type::d, "Date"}, {type::dt, "DateTime"}, {type::b, "UInt8"}
};
ColumnType time_type(std::string value)
{
if (value.length() == 12)
{
for (size_t i : {5, 8})
{
if (value[i] != '-')
return type::s;
}
for (size_t i : {1, 2, 3, 4, 6, 7, 9, 10})
{
if (!isdigit(value[i]))
return type::s;
}
return type::d;
}
if (value.length() == 21)
{
for (size_t i : {5, 8})
{
if (value[i] != '-')
return type::s;
}
for (size_t i : {14, 17})
{
if (value[i] != '-')
return type::s;
}
if (value[11] != '-')
return type::s;
return type::dt;
}
return type::s;
}
// Casting inner clickhouse parser type to our type
ColumnType type_cast(int t)
{
switch (t)
{
case 1:
case 2:
case 4:
case 5:
case 19:
case 20:
case 21:
return type::i;
case 3:
return type::f;
case 16:
return type::s;
case 17:
return type::a | type::all;
case 18:
return type::t | type::all;
}
return type::all;
}
class FuncRet
{
public:
FuncRet() = default;
FuncRet(ColumnType t, std::string v)
: value(v)
, type(t) {}
FuncRet(ColumnType t, std::string v, bool is_a)
: value(v)
, type(t)
, is_array(is_a) {}
std::string value{};
ColumnType type = type::all;
bool is_array = false;
};
std::map<std::string, FuncRet> func_to_return_type = {
{"divide", FuncRet(type::f, "")}, {"e", FuncRet(type::f, "e()")}, {"pi", FuncRet(type::f, "pi()")}, {"exp", FuncRet(type::f, "")},
{"log", FuncRet(type::f,"")}, {"exp2", FuncRet(type::f, "")}, {"log2", FuncRet(type::f, "")}, {"exp10", FuncRet(type::f, "")},
{"log10", FuncRet(type::f, "")}, {"sqrt", FuncRet(type::f, "")}, {"cbrt", FuncRet(type::f, "")}, {"erf", FuncRet(type::f, "")},
{"erfc", FuncRet(type::f, "")}, {"lgamma", FuncRet(type::f, "")}, {"tgamma", FuncRet(type::f, "")}, {"sin", FuncRet(type::f, "")},
{"cos", FuncRet(type::f, "")}, {"tan", FuncRet(type::f, "")}, {"asin", FuncRet(type::f, "")}, {"acos", FuncRet(type::f, "")},
{"atan", FuncRet(type::f, "")}, {"pow", FuncRet(type::f, "")}, {"splitbystring", FuncRet(type::s | type::a,"")},
{"splitbychar", FuncRet(type::s | type::a, "")}, {"alphatokens", FuncRet(type::s | type::a, "")}, {"toyear", FuncRet(type::i, "")},
{"tomonth", FuncRet(type::i, "")}, {"todayofmonth", FuncRet(type::i, "")}, {"tohour", FuncRet(type::dt, "")}, {"tominute", FuncRet(type::dt, "")},
{"toseconds", FuncRet(type::dt, "")}, {"tounixtimestamp", FuncRet(type::i, "")}, {"tostartofyear", FuncRet(type::dt | type::d, "")},
{"tostartofquater",FuncRet(type::dt | type::d, "")}, {"tostartofmonth", FuncRet(type::dt | type::d, "")}, {"tomonday", FuncRet(type::dt | type::d, "")},
{"tostartoffiveminutes", FuncRet(type::dt, "")}, {"tostartoftenminutes", FuncRet(type::dt, "")}, {"tostartoffifteenminutes", FuncRet(type::dt, "")},
{"tostartofinterval", FuncRet(type::dt, "")}, {"totime", FuncRet(type::dt, "")}, {"torelativemonthnum", FuncRet(type::i, "")},
{"torelativeweeknum", FuncRet(type::i, "")}, {"torelativedaynum", FuncRet(type::i, "")}, {"torelativehournum", FuncRet(type::i, "")},
{"torelativeminutenum", FuncRet(type::i, "")}, {"torelativesecondsnum", FuncRet(type::i, "")}, {"datediff", FuncRet(type::d | type::dt, "")},
{"formatdatetime", FuncRet(type::s, "")}, {"now", FuncRet(type::dt | type::d, "now()")}, {"today", FuncRet(type::d | type::dt, "today()")},
{"yesterday", FuncRet(type::d | type::dt, "yesterday()")}
};
std::set<std::string> func_args_same_types = {
"equals", "notequals", "less", "greater", "lessorequals", "greaterorequals", "multiply"
};
std::map<std::string, ColumnType> func_to_param_type = {
{"tostartofminute", type::dt}, {"plus", type::i | type::f | type::d | type::dt}, {"multiply", type::i | type::f},
{"minus", type::i | type::f | type::d | type::dt}, {"negate", type::i | type::f}, {"divide", type::i | type::f},
{"abs", type::i | type::f}, {"gcd", type::i | type::f}, {"lcm", type::i | type::f}, {"bitnot", type::i}, {"bitshiftleft", type::i},
{"bitshiftright", type::i}, {"bittest", type::i}, {"exp", type::i | type::f}, {"log", type::i | type::f},
{"exp2", type::i | type::f}, {"log2", type::i | type::f}, {"exp10", type::i | type::f}, {"log10", type::i | type::f},
{"sqrt", type::i | type::f}, {"cbrt", type::i | type::f}, {"erf", type::i | type::f}, {"erfc", type::i | type::f},
{"lgamma", type::i | type::f}, {"tgamma", type::i | type::f}, {"sin", type::i | type::f}, {"cos", type::i | type::f},
{"tan", type::i | type::f}, {"asin", type::i | type::f}, {"acos", type::i | type::f}, {"atan", type::i | type::f},
{"pow", type::i | type::f}, {"arrayjoin", type::all | type::a}, {"substring", type::s}, {"splitbystring", type::s}, {"splitbychar", type::s},
{"alphatokens", type::s}, {"toyear", type::d | type::dt}, {"tomonth", type::d | type::dt}, {"todayofmonth", type::d | type::dt}, {"tohour", type::dt},
{"tominute", type::dt}, {"tosecond", type::dt}, {"touixtimestamp", type::dt}, {"tostartofyear", type::d | type::dt},
{"tostartofquarter", type::d | type::dt}, {"tostartofmonth", type::d | type::dt}, {"tomonday", type::d | type::dt},
{"tostartoffiveminute", type::dt}, {"tostartoftenminutes", type::dt}, {"tostartoffifteenminutes", type::d | type::dt},
{"tostartofinterval", type::d | type::dt}, {"totime", type::d | type::dt}, {"torelativehonthnum", type::d | type::dt},
{"torelativeweeknum", type::d | type::dt}, {"torelativedaynum", type::d | type::dt}, {"torelativehournum", type::d | type::dt},
{"torelativeminutenum", type::d | type::dt}, {"torelativesecondnum", type::d | type::dt}, {"datediff", type::d | type::dt},
{"formatdatetime", type::dt}
};
class Column
{
public:
TableAndColumn name;
std::set<TableAndColumn> equals;
std::set<std::string> values;
ColumnType type = type::all;
bool is_array = false;
Column() = default;
explicit Column(const std::string & column_name)
{
name = std::make_pair("", column_name);
type = type::all;
}
void merge(Column other)
{
if (name.second.empty())
name = other.name;
equals.insert(other.equals.begin(), other.equals.end());
values.insert(other.values.begin(), other.values.end());
type &= other.type;
is_array |= other.is_array;
}
void printType() const
{
if (type & type::i)
std::cout << "I";
if (type & type::f)
std::cout << "F";
if (type & type::s)
std::cout << "S";
if (type & type::d)
std::cout << "D";
if (type & type::dt)
std::cout << "DT";
if (is_array)
std::cout << "ARR";
std::cout << "\n";
}
void print()
{
std::cout << name.first << "." << name.second << "\n";
std::cout << "type: ";
printType();
std::cout << "values:";
for (const auto & val : values)
std::cout << " " << val;
std::cout << "\n";
std::cout << "equal:";
for (const auto & col : equals)
std::cout << " " << col.first << "." << col.second;
std::cout << "\n";
}
std::string generateOneValue() const
{
if (type & type::i)
return randomInteger();
if (type & type::f)
return randomFloat();
if (type & type::d)
return randomDate();
if (type & type::dt)
return randomDatetime();
if (type & type::s)
return "'" + randomString(rng() % 40) + "'";
if (type & type::b)
return "0";
return "";
}
bool generateValues(int amount = 0)
{
if (values.size() > 2 && amount == 0)
return false;
while (values.size() < 1 or amount > 0)
{
amount -= 1;
if (is_array)
{
std::string v = "[";
for (unsigned int i = 0; i < static_cast<unsigned int>(rng()) % 10 + 1; ++i)
{
if (i != 0)
v += ", ";
v += generateOneValue();
}
v += "]";
values.insert(v);
}
else
{
values.insert(generateOneValue());
}
}
return true;
}
void unifyType()
{
if (type & type::i)
type = type::i;
else if (type & type::f)
type = type::f;
else if (type & type::d)
type = type::d;
else if (type & type::dt)
type = type::dt;
else if (type & type::s)
type = type::s;
else if (type & type::b)
type = type::b;
else
throw std::runtime_error("Error in determination column type " + name.first + '.' + name.second);
}
};
std::set<std::vector<std::string>>
decartMul(
std::set<std::vector<std::string>> & prev,
std::set<std::string> & mul)
{
std::set<std::vector<std::string>> result;
for (auto v : prev)
for (auto m : mul)
{
std::vector<std::string> tmp = v;
tmp.push_back(m);
result.insert(tmp);
}
return result;
}
class Table
{
public:
Table() = default;
explicit Table(std::string table_name)
: name(table_name) {}
std::string name;
std::set<std::string> columns;
std::map<std::string, Column> column_description;
bool columnExists(const std::string & column_name) const
{
return columns.count(column_name); // || columns_maybe.count(column_name);
}
void addColumn(const std::string & column_name)
{
columns.insert(column_name);
}
void setDescription(Column other)
{
column_description[other.name.second].merge(other);
}
void print()
{
std::cout << "Table\n";
std::cout << name << "\n";
std::cout << "Columns:\n\n";
for (const auto & column : columns)
{
std::cout << column << "\n";
if (column_description.count(column))
column_description[column].print();
std::cout << "\n";
}
std::cout << "\n";
}
void merge(Table other)
{
name = other.name;
columns.insert(other.columns.begin(), other.columns.end());
for (auto desc : other.column_description)
column_description[desc.first].merge(desc.second);
}
std::string createQuery()
{
std::string create;
std::string db, _;
std::tie(db, _) = get_table_a_column(name);
create = "CREATE DATABASE IF NOT EXISTS " + db + ";\n\n";
create += "CREATE TABLE IF NOT EXISTS " + name + " (\n";
for (auto column = columns.begin(); column != columns.end(); ++column)
{
if (column != columns.begin())
create += ", \n";
create += *column + " ";
create += column_description[*column].is_array ? "Array(" : "";
create += type_definition[column_description[*column].type];
create += column_description[*column].is_array ? ")" : "";
}
create += "\n) ENGINE = Log;\n\n";
return create;
}
std::string insertQuery()
{
std::string insert = "INSERT INTO " + name + "\n";
insert += "(";
std::set<std::vector<std::string>> values = {std::vector<std::string>(0)};
for (auto column = columns.begin(); column != columns.end(); ++column)
{
if (column != columns.begin())
insert += ", ";
insert += *column;
values = decartMul(values, column_description[*column].values);
}
insert += ") VALUES \n";
for (auto val_set_iter = values.begin(); val_set_iter != values.end();
++val_set_iter)
{
if (val_set_iter != values.begin())
insert += ",\n";
auto val_set = *val_set_iter;
insert += "(";
for (auto val = val_set.begin(); val != val_set.end(); ++val)
{
if (val != val_set.begin())
insert += ", ";
insert += *val;
}
insert += ")";
}
insert += ";\n\n";
return insert;
}
};
class TableList
{
public:
std::string main_table;
std::map<std::string, std::string> aliases;
std::unordered_map<std::string, Table> tables;
std::set<std::string> nested;
bool tableExists(const std::string & table_name) const
{
return tables.count(table_name);
}
void addColumn(std::string full_column)
{
std::string table, column;
std::tie(table, column) = get_table_a_column(full_column);
if (!table.empty())
{
if (tables.count(table))
{
tables[table].addColumn(column);
return;
}
if (aliases.count(table))
{
tables[aliases[table]].addColumn(column);
return;
}
nested.insert(table);
}
tables[main_table].addColumn(full_column);
}
void addTable(std::string table_name)
{
if (tables.count(table_name))
return;
tables[table_name] = Table(table_name);
if (main_table.empty())
main_table = table_name;
}
void addDescription(const Column & description)
{
std::string table = description.name.first;
if (tables.count(table))
tables[table].setDescription(description);
}
TableAndColumn getTable(std::string full_column) const
{
std::string table, column;
std::tie(table, column) = get_table_a_column(full_column);
if (!table.empty())
{
if (tables.count(table))
return std::make_pair(table, column);
if (aliases.count(table))
{
table = aliases.find(table)->second;
return std::make_pair(table, column);
}
}
return std::make_pair(main_table, full_column);
}
void print()
{
for (auto & table : tables)
{
table.second.print();
std::cout << "\n";
}
}
void merge(TableList other)
{
for (auto table : other.tables)
tables[table.first].merge(table.second);
nested.insert(other.nested.begin(), other.nested.end());
if (main_table.empty())
main_table = other.main_table;
}
};
std::string getAlias(DB::ASTPtr ch)
{
auto x = std::dynamic_pointer_cast<DB::ASTWithAlias>(ch);
if (x)
return x->alias;
for (const auto & child : (*ch).children)
{
auto alias = getAlias(child);
if (!alias.empty())
return alias;
}
return "";
}
using FuncHandler = std::function<FuncRet(DB::ASTPtr, std::map<std::string, Column> &)>;
std::map<std::string, FuncHandler> handlers = {};
FuncRet arrayJoinFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
std::set<std::string> indents = {};
for (auto & arg : x->arguments->children)
{
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
indents.insert(ident->name);
}
for (const auto & indent : indents)
{
auto c = Column(indent);
c.type = type::all;
c.is_array = true;
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
FuncRet r(type::all, "");
return r;
}
return FuncRet();
}
FuncRet inFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
std::set<std::string> indents{};
std::set<std::string> values{};
ColumnType type_value = type::all;
for (auto & arg : x->arguments->children)
{
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
{
indents.insert(ident->name);
}
auto literal = std::dynamic_pointer_cast<DB::ASTLiteral>(arg);
if (literal)
{
ColumnType type = type_cast(literal->value.getType());
auto routine = [&](const auto & arr_values)
{
for (auto & val : arr_values)
{
type = type_cast(val.getType());
if (type == type::s || type == type::d || type == type::dt)
type = time_type(applyVisitor(DB::FieldVisitorToString(), val));
type_value &= type;
values.insert(applyVisitor(DB::FieldVisitorToString(), val));
}
};
if (type & type::a)
{
auto arr_values = literal->value.get<DB::Array>();
routine(arr_values);
}
if (type & type::a)
{
auto arr_values = literal->value.get<DB::Tuple>();
routine(arr_values);
}
}
auto subfunc = std::dynamic_pointer_cast<DB::ASTFunction>(arg);
if (subfunc)
{
FuncHandler f;
auto arg_func_name = std::dynamic_pointer_cast<DB::ASTFunction>(arg)->name;
if (handlers.count(arg_func_name))
f = handlers[arg_func_name];
else
f = handlers[""];
FuncRet ret = f(arg, columns);
if (ret.value != "")
{
values.insert(ret.value);
}
type_value &= ret.type;
}
}
for (const auto & indent : indents)
{
auto c = Column(indent);
c.type = type_value;
c.values.insert(values.begin(), values.end());
c.generateValues(1);
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
FuncRet r(type::b | type::i, "");
return r;
}
return FuncRet();
}
FuncRet arrayFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
std::set<std::string> indents = {};
std::string value = "[";
ColumnType type_value = type::i | type::f | type::d | type::dt | type::s;
bool no_indent = true;
for (const auto & arg : x->arguments->children)
{
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
{
no_indent = false;
indents.insert(ident->name);
}
auto literal = std::dynamic_pointer_cast<DB::ASTLiteral>(arg);
if (literal)
{
ColumnType type = type_cast(literal->value.getType());
if (type == type::s || type == type::d || type == type::dt)
type = time_type(value);
type_value &= type;
if (value != "[")
value += ", ";
value += applyVisitor(DB::FieldVisitorToString(), literal->value);
}
}
for (const auto & indent : indents)
{
auto c = Column(indent);
c.type = type_value;
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
value += ']';
FuncRet r(type_value, "");
r.is_array = true;
if (no_indent)
r.value = value;
return r;
}
return FuncRet();
}
FuncRet arithmeticFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
std::set<std::string> indents = {};
std::set<std::string> values = {};
ColumnType type_value = type::i | type::f | type::d | type::dt;
ColumnType args_types = 0;
bool no_indent = true;
for (auto & arg : x->arguments->children)
{
ColumnType type = 0;
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
{
no_indent = false;
indents.insert(ident->name);
}
auto literal = std::dynamic_pointer_cast<DB::ASTLiteral>(arg);
if (literal)
type = type_cast(literal->value.getType());
auto subfunc = std::dynamic_pointer_cast<DB::ASTFunction>(arg);
if (subfunc)
{
FuncHandler f;
auto arg_func_name = std::dynamic_pointer_cast<DB::ASTFunction>(arg)->name;
if (handlers.count(arg_func_name))
f = handlers[arg_func_name];
else
f = handlers[""];
FuncRet ret = f(arg, columns);
type = ret.type;
}
args_types |= type;
}
if (args_types & (type::d | type::dt))
type_value -= type::f;
if (args_types & type::f)
type_value -= type::d | type::dt;
for (auto indent : indents)
{
auto c = Column(indent);
c.type = type_value;
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
ColumnType ret_type = 0;
if (args_types & type::dt)
ret_type = type::dt;
else if (args_types & type::d)
ret_type = type::d | type::dt;
else if (args_types & type::f)
ret_type = type::f;
else
ret_type = type::d | type::f | type::dt | type::i;
FuncRet r(ret_type, "");
if (no_indent)
{
std::ostringstream ss;
formatAST(*ch, ss);
r.value = ss.str();
}
return r;
}
return FuncRet();
}
FuncRet likeFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
std::set<std::string> indents = {};
std::set<std::string> values = {};
ColumnType type_value = type::s;
for (auto & arg : x->arguments->children)
{
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
indents.insert(ident->name);
auto literal = std::dynamic_pointer_cast<DB::ASTLiteral>(arg);
if (literal)
{
std::string value = applyVisitor(DB::FieldVisitorToString(), literal->value);
std::string example{};
for (size_t i = 0; i != value.size(); ++i)
{
if (value[i] == '%')
example += randomString(rng() % 10);
else if (value[i] == '_')
example += randomString(1);
else
example += value[i];
}
values.insert(example);
}
}
for (const auto & indent : indents)
{
auto c = Column(indent);
c.type = type_value;
c.values.insert(values.begin(), values.end());
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
FuncRet r(type::b, "");
return r;
}
return FuncRet();
}
FuncRet simpleFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto X = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (X)
{
std::set<std::string> indents = {};
std::set<std::string> values = {};
ColumnType type_value = type::all;
bool is_array = false;
bool no_indent = true;
if (func_to_param_type.count(boost::algorithm::to_lower_copy(X->name)))
{
type_value &= func_to_param_type[boost::algorithm::to_lower_copy(X->name)];
is_array = func_to_param_type[boost::algorithm::to_lower_copy(X->name)] & type::a;
}
for (auto arg : X->arguments->children)
{
ColumnType type = type::all;
std::string value;
auto ident = std::dynamic_pointer_cast<DB::ASTIdentifier>(arg);
if (ident)
{
no_indent = false;
indents.insert(ident->name);
}
auto literal = std::dynamic_pointer_cast<DB::ASTLiteral>(arg);
if (literal)
{
value = applyVisitor(DB::FieldVisitorToString(), literal->value);
type = type_cast(literal->value.getType());
is_array |= type & type::a;
}
auto subfunc = std::dynamic_pointer_cast<DB::ASTFunction>(arg);
if (subfunc)
{
FuncHandler f;
auto arg_func_name = std::dynamic_pointer_cast<DB::ASTFunction>(arg)->name;
if (handlers.count(arg_func_name))
f = handlers[arg_func_name];
else
f = handlers[""];
FuncRet ret = f(arg, columns);
is_array |= ret.is_array;
type = ret.type;
value = ret.value;
if (value.empty())
no_indent = false;
}
if (!value.empty())
{
if (type == type::i)
{
values.insert(value);
values.insert(value + " + " + randomInteger(1, 10));
values.insert(value + " - " + randomInteger(1, 10));
}
if (type == type::f)
{
values.insert(value);
values.insert(value + " + " + randomFloat(1, 10));
values.insert(value + " - " + randomFloat(1, 10));
}
if (type & type::s || type & type::d || type & type::dt)
{
if (type == type::s)
type = time_type(value);
if (type == type::s)
values.insert(value);
if (type & type::d)
{
values.insert(value);
values.insert("toDate(" + value + ") + " + randomInteger(1, 10));
values.insert("toDate(" + value + ") - " + randomInteger(1, 10));
}
else if (type & type::dt)
{
values.insert(value);
values.insert(
"toDateTime(" + value + ") + " + randomInteger(1, 10000));
values.insert(
"toDateTime(" + value + ") - " + randomInteger(1, 10000));
}
}
}
if (func_args_same_types.count(boost::algorithm::to_lower_copy(X->name)))
type_value &= type;
}
for (const auto & indent : indents)
{
auto c = Column(indent);
c.type = type_value;
c.is_array = is_array;
if (func_args_same_types.count(
boost::algorithm::to_lower_copy(X->name)))
c.values = values;
for (const auto & ind : indents)
if (ind != indent)
c.equals.insert(std::make_pair("", ind));
if (columns.count(indent))
columns[indent].merge(c);
else
columns[indent] = c;
}
if (func_to_return_type.count(boost::algorithm::to_lower_copy(X->name)))
{
if (no_indent)
{
std::ostringstream ss;
formatAST(*ch, ss);
auto r = func_to_return_type[boost::algorithm::to_lower_copy(X->name)];
r.value = ss.str();
return r;
}
return func_to_return_type[boost::algorithm::to_lower_copy(X->name)];
}
else if (func_to_param_type.count(
boost::algorithm::to_lower_copy(X->name)))
{
if (no_indent)
{
std::ostringstream ss;
formatAST(*ch, ss);
return FuncRet(
func_to_param_type[boost::algorithm::to_lower_copy(X->name)],
ss.str());
}
return FuncRet(
func_to_param_type[boost::algorithm::to_lower_copy(X->name)],
"");
}
}
return FuncRet();
}
void processFunc(DB::ASTPtr ch, std::map<std::string, Column> & columns)
{
auto x = std::dynamic_pointer_cast<DB::ASTFunction>(ch);
if (x)
{
FuncHandler f;
auto arg_func_name = x->name;
if (handlers.count(arg_func_name))
f = handlers[arg_func_name];
else
f = handlers[""];
f(ch, columns);
}
else
{
for (const auto & child : (*ch).children)
processFunc(child, columns);
}
}
std::set<std::string> getIndent(DB::ASTPtr ch)
{
if (!ch)
return {};
std::set<std::string> ret = {};
auto x = std::dynamic_pointer_cast<DB::ASTIdentifier>(ch);
if (x)
ret.insert(x->name);
for (const auto & child : (*ch).children)
{
auto child_ind = getIndent(child);
ret.insert(child_ind.begin(), child_ind.end());
}
return ret;
}
std::set<std::string> getSelectIndent(
DB::ASTPtr asp,
std::set<std::string> & column_alias)
{
std::set<std::string> ret = {};
for (auto & ch : asp->children)
{
auto alias = getAlias(ch);
auto columns = getIndent(ch);
if (alias.empty())
column_alias.insert(alias);
ret.insert(columns.begin(), columns.end());
}
return ret;
}
std::set<TableAndColumn>
connectedEqualityFind(
const Column & now,
std::map<std::string, Column> & columns_descriptions,
std::set<TableAndColumn> & visited)
{
std::set<TableAndColumn> result;
for (auto & column : now.equals)
if (!visited.count(column))
{
visited.insert(column);
auto sub_r = connectedEqualityFind(
columns_descriptions[column.first + "." + column.second],
columns_descriptions,
visited);
result.insert(sub_r.begin(), sub_r.end());
}
result.insert(now.name);
return result;
}
std::map<std::string, Column>
unificateColumns(
std::map<std::string, Column> columns_descriptions,
const TableList & all_tables)
{
for (auto & column : columns_descriptions)
{
std::set<TableAndColumn> changed_equals;
for (const auto & eq : column.second.equals)
{
std::string t, c;
std::tie(t, c) = all_tables.getTable(eq.second);
changed_equals.insert(std::make_pair(t, c));
}
column.second.equals = changed_equals;
}
std::map<std::string, Column> result;
for (auto & column : columns_descriptions)
{
std::string t, c;
std::tie(t, c) = all_tables.getTable(column.first);
column.second.name = std::make_pair(t, c);
result[t + "." + c].merge(column.second);
}
std::set<TableAndColumn> visited;
for (auto & column : result)
if (!visited.count(column.second.name))
{
auto equal = connectedEqualityFind(
result[column.second.name.first + "." + column.second.name.second],
result,
visited);
for (auto c : equal)
result[c.first + "." + c.second].equals = equal;
}
for (auto & column : result)
for (auto e : column.second.equals)
column.second.merge(result[e.first + "." + e.second]);
for (auto & column : result)
{
column.second.unifyType();
if (column.second.generateValues())
for (auto e : column.second.equals)
result[e.first + "." + e.second].merge(column.second);
}
return result;
}
std::vector<DB::ASTPtr> getSelect(DB::ASTPtr vertex)
{
auto z = std::dynamic_pointer_cast<DB::ASTSelectQuery>(vertex);
std::vector<DB::ASTPtr> result;
if (z)
{
result.push_back(vertex);
return result;
}
for (const auto & child : (*vertex).children)
{
auto v = getSelect(child);
result.insert(result.end(), v.begin(), v.end());
}
return result;
}
void parseSelectQuery(DB::ASTPtr ast, TableList & all_tables)
{
if (!ast)
throw std::runtime_error("Bad ASTPtr in parseSelectQuery" + StackTrace().toString());
auto select_ast = std::dynamic_pointer_cast<DB::ASTSelectQuery>(ast);
if (!select_ast)
{
std::cerr << "not select query";
return;
}
std::set<std::string> columns = {};
auto x = select_ast->tables();
if (!x)
throw std::runtime_error("There is no tables in query. Nothing to generate.");
for (auto & child : x->children)
{
auto ch = std::dynamic_pointer_cast<DB::ASTTablesInSelectQueryElement>(child);
auto TEast = std::dynamic_pointer_cast<DB::ASTTableExpression>(ch->table_expression);
if (TEast && TEast->database_and_table_name)
{
auto table_name = *(getIndent(TEast->database_and_table_name).begin());
all_tables.addTable(table_name);
auto alias = getAlias(ch);
if (!alias.empty())
all_tables.aliases[alias] = table_name;
}
if (TEast && TEast->subquery)
{
for (auto select : getSelect(TEast->subquery))
{
TableList local;
parseSelectQuery(select, local);
all_tables.merge(local);
}
}
if (ch->table_join)
{
auto jch = std::dynamic_pointer_cast<DB::ASTTableJoin>(ch->table_join);
if (jch->using_expression_list)
{
auto join_columns = getIndent(jch->using_expression_list);
columns.insert(join_columns.begin(), join_columns.end());
}
else if (jch->on_expression)
{
auto join_columns = getIndent(jch->on_expression);
columns.insert(join_columns.begin(), join_columns.end());
}
}
}
std::set<std::string> column_aliases;
auto select_columns = getSelectIndent(select_ast->select(), column_aliases);
columns.insert(select_columns.begin(), select_columns.end());
auto where_columns = getIndent(select_ast->where());
columns.insert(where_columns.begin(), where_columns.end());
auto groupby_columns = getIndent(select_ast->groupBy());
columns.insert(groupby_columns.begin(), groupby_columns.end());
auto orderby_columns = getIndent(select_ast->orderBy());
columns.insert(orderby_columns.begin(), orderby_columns.end());
auto having_columns = getIndent(select_ast->having());
columns.insert(having_columns.begin(), having_columns.end());
std::map<std::string, Column> columns_descriptions;
processFunc(ast, columns_descriptions);
for (const auto & column : columns)
if (!column_aliases.count(column))
{
if (!columns_descriptions.count(column))
columns_descriptions[column] = Column(column);
all_tables.addColumn(column);
}
columns_descriptions = unificateColumns(columns_descriptions, all_tables);
for (auto & column : columns_descriptions)
all_tables.addDescription(column.second);
}
TableList getTablesFromSelect(std::vector<std::string> queries)
{
DB::ParserQueryWithOutput parser;
TableList result;
for (std::string & query : queries)
{
DB::ASTPtr ast = parseQuery(parser, query.data(), query.data() + query.size(), "", 0, 0);
for (auto & select : getSelect(ast))
{
TableList local;
parseSelectQuery(select, local);
result.merge(local);
}
}
return result;
}
int main(int, char **)
{
handlers["plus"] = arithmeticFunc;
handlers["minus"] = arithmeticFunc;
handlers["like"] = likeFunc;
handlers["array"] = arrayFunc;
handlers["in"] = inFunc;
handlers[""] = simpleFunc;
std::vector<std::string> queries;
std::string in;
std::string query{};
while (getline(std::cin, in))
{
/// Skip comments
if (in.find("--") != std::string::npos)
continue;
query += in + " ";
if (in.find(';') != std::string::npos)
{
queries.push_back(query);
query = "";
}
}
try
{
auto result = getTablesFromSelect(queries);
for (auto & table : result.tables)
{
std::cout << table.second.createQuery();
std::cout << table.second.insertQuery();
}
for (auto & q: queries)
std::cout << q << std::endl;
}
catch (std::string & e)
{
std::cerr << "Exception: " << e << std::endl;
}
}