bool ParserInsertQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
{
ParserKeyword s_insert_into("INSERT INTO");
ParserKeyword s_table("TABLE");
ParserKeyword s_function("FUNCTION");
ParserToken s_dot(TokenType::Dot);
ParserKeyword s_values("VALUES");
ParserKeyword s_format("FORMAT");
ParserKeyword s_select("SELECT");
ParserKeyword s_with("WITH");
ParserToken s_lparen(TokenType::OpeningRoundBracket);
ParserToken s_rparen(TokenType::ClosingRoundBracket);
ParserIdentifier name_p;
ParserList columns_p(std::make_unique<ParserCompoundIdentifier>(), std::make_unique<ParserToken>(TokenType::Comma), false);
ParserFunction table_function_p;
ASTPtr database;
ASTPtr table;
ASTPtr columns;
ASTPtr format;
ASTPtr select;
ASTPtr table_function;
/// Insertion data
const char * data = nullptr;
if (!s_insert_into.ignore(pos, expected))
return false;
s_table.ignore(pos, expected);
if (s_function.ignore(pos, expected))
{
if (!table_function_p.parse(pos, table_function, expected))
return false;
}
else
{
if (!name_p.parse(pos, table, expected))
return false;
if (s_dot.ignore(pos, expected))
{
database = table;
if (!name_p.parse(pos, table, expected))
return false;
}
}
/// Is there a list of columns
if (s_lparen.ignore(pos, expected))
{
if (!columns_p.parse(pos, columns, expected))
return false;
if (!s_rparen.ignore(pos, expected))
return false;
}
Pos before_select = pos;
/// VALUES or FORMAT or SELECT
if (s_values.ignore(pos, expected))
{
data = pos->begin;
}
else if (s_format.ignore(pos, expected))
{
auto name_pos = pos;
if (!name_p.parse(pos, format, expected))
return false;
data = name_pos->end;
if (data < end && *data == ';')
throw Exception("You have excessive ';' symbol before data for INSERT.\n"
"Example:\n\n"
"INSERT INTO t (x, y) FORMAT TabSeparated\n"
";\tHello\n"
"2\tWorld\n"
"\n"
"Note that there is no ';' just after format name, "
"you need to put at least one whitespace symbol before the data.", ErrorCodes::SYNTAX_ERROR);
while (data < end && (*data == ' ' || *data == '\t' || *data == '\f'))
++data;
/// Data starts after the first newline, if there is one, or after all the whitespace characters, otherwise.
if (data < end && *data == '\r')
++data;
if (data < end && *data == '\n')
++data;
}
else if (s_select.ignore(pos, expected) || s_with.ignore(pos,expected))
{
pos = before_select;
ParserSelectWithUnionQuery select_p;
select_p.parse(pos, select, expected);
}
else
{
return false;
}
auto query = std::make_shared<ASTInsertQuery>();
node = query;
if (table_function)
{
query->table_function = table_function;
}
else
{
getIdentifierName(database, query->database);
getIdentifierName(table, query->table);
}
getIdentifierName(format, query->format);
query->columns = columns;
query->select = select;
query->data = data != end ? data : nullptr;
query->end = end;
if (columns)
query->children.push_back(columns);
if (select)
query->children.push_back(select);
return true;
}
bool ParserCreateQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
{
ParserKeyword s_create("CREATE");
ParserKeyword s_temporary("TEMPORARY");
ParserKeyword s_attach("ATTACH");
ParserKeyword s_table("TABLE");
ParserKeyword s_database("DATABASE");
ParserKeyword s_if_not_exists("IF NOT EXISTS");
ParserKeyword s_as("AS");
ParserKeyword s_view("VIEW");
ParserKeyword s_materialized("MATERIALIZED");
ParserKeyword s_populate("POPULATE");
ParserToken s_dot(TokenType::Dot);
ParserToken s_lparen(TokenType::OpeningRoundBracket);
ParserToken s_rparen(TokenType::ClosingRoundBracket);
ParserStorage storage_p;
ParserIdentifier name_p;
ParserColumnsOrIndicesDeclarationList columns_or_indices_p;
ParserSelectWithUnionQuery select_p;
ASTPtr database;
ASTPtr table;
ASTPtr columns_list;
ASTPtr to_database;
ASTPtr to_table;
ASTPtr storage;
ASTPtr as_database;
ASTPtr as_table;
ASTPtr select;
String cluster_str;
bool attach = false;
bool if_not_exists = false;
bool is_view = false;
bool is_materialized_view = false;
bool is_populate = false;
bool is_temporary = false;
if (!s_create.ignore(pos, expected))
{
if (s_attach.ignore(pos, expected))
attach = true;
else
return false;
}
if (s_temporary.ignore(pos, expected))
{
is_temporary = true;
}
if (s_table.ignore(pos, expected))
{
if (s_if_not_exists.ignore(pos, expected))
if_not_exists = true;
if (!name_p.parse(pos, table, expected))
return false;
if (s_dot.ignore(pos, expected))
{
database = table;
if (!name_p.parse(pos, table, expected))
return false;
}
if (ParserKeyword{"ON"}.ignore(pos, expected))
{
if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
return false;
}
// Shortcut for ATTACH a previously detached table
if (attach && (!pos.isValid() || pos.get().type == TokenType::Semicolon))
{
auto query = std::make_shared<ASTCreateQuery>();
node = query;
query->attach = attach;
query->if_not_exists = if_not_exists;
query->cluster = cluster_str;
getIdentifierName(database, query->database);
getIdentifierName(table, query->table);
return true;
}
/// List of columns.
if (s_lparen.ignore(pos, expected))
{
if (!columns_or_indices_p.parse(pos, columns_list, expected))
return false;
if (!s_rparen.ignore(pos, expected))
return false;
if (!storage_p.parse(pos, storage, expected) && !is_temporary)
return false;
}
else
{
storage_p.parse(pos, storage, expected);
if (!s_as.ignore(pos, expected))
return false;
if (!select_p.parse(pos, select, expected)) /// AS SELECT ...
{
/// AS [db.]table
if (!name_p.parse(pos, as_table, expected))
return false;
if (s_dot.ignore(pos, expected))
{
as_database = as_table;
if (!name_p.parse(pos, as_table, expected))
return false;
}
/// Optional - ENGINE can be specified.
if (!storage)
storage_p.parse(pos, storage, expected);
}
}
}
else if (is_temporary)
return false;
else if (s_database.ignore(pos, expected))
{
if (s_if_not_exists.ignore(pos, expected))
if_not_exists = true;
if (!name_p.parse(pos, database, expected))
return false;
if (ParserKeyword{"ON"}.ignore(pos, expected))
{
if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
return false;
}
storage_p.parse(pos, storage, expected);
}
else
{
/// VIEW or MATERIALIZED VIEW
if (s_materialized.ignore(pos, expected))
{
is_materialized_view = true;
}
else
is_view = true;
if (!s_view.ignore(pos, expected))
return false;
if (s_if_not_exists.ignore(pos, expected))
if_not_exists = true;
if (!name_p.parse(pos, table, expected))
return false;
if (s_dot.ignore(pos, expected))
{
database = table;
if (!name_p.parse(pos, table, expected))
return false;
}
if (ParserKeyword{"ON"}.ignore(pos, expected))
{
if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
return false;
}
// TO [db.]table
if (ParserKeyword{"TO"}.ignore(pos, expected))
{
if (!name_p.parse(pos, to_table, expected))
return false;
if (s_dot.ignore(pos, expected))
{
to_database = to_table;
if (!name_p.parse(pos, to_table, expected))
return false;
}
}
/// Optional - a list of columns can be specified. It must fully comply with SELECT.
if (s_lparen.ignore(pos, expected))
{
if (!columns_or_indices_p.parse(pos, columns_list, expected))
return false;
if (!s_rparen.ignore(pos, expected))
return false;
}
if (is_materialized_view && !to_table)
{
/// Internal ENGINE for MATERIALIZED VIEW must be specified.
if (!storage_p.parse(pos, storage, expected))
return false;
if (s_populate.ignore(pos, expected))
is_populate = true;
}
/// AS SELECT ...
if (!s_as.ignore(pos, expected))
return false;
if (!select_p.parse(pos, select, expected))
return false;
}
auto query = std::make_shared<ASTCreateQuery>();
node = query;
query->attach = attach;
query->if_not_exists = if_not_exists;
query->is_view = is_view;
query->is_materialized_view = is_materialized_view;
query->is_populate = is_populate;
query->temporary = is_temporary;
getIdentifierName(database, query->database);
getIdentifierName(table, query->table);
query->cluster = cluster_str;
getIdentifierName(to_database, query->to_database);
getIdentifierName(to_table, query->to_table);
query->set(query->columns_list, columns_list);
query->set(query->storage, storage);
getIdentifierName(as_database, query->as_database);
getIdentifierName(as_table, query->as_table);
query->set(query->select, select);
return true;
}
bool ParserInsertQuery::parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected)
{
Pos begin = pos;
ParserWhiteSpaceOrComments ws;
ParserString s_insert("INSERT", true, true);
ParserString s_into("INTO", true, true);
ParserString s_dot(".");
ParserString s_id("ID");
ParserString s_eq("=");
ParserStringLiteral id_p;
ParserString s_values("VALUES", true, true);
ParserString s_format("FORMAT", true, true);
ParserString s_select("SELECT", true, true);
ParserString s_lparen("(");
ParserString s_rparen(")");
ParserIdentifier name_p;
ParserList columns_p(std::make_unique<ParserCompoundIdentifier>(), std::make_unique<ParserString>(","), false);
ASTPtr database;
ASTPtr table;
ASTPtr columns;
ASTPtr format;
ASTPtr select;
ASTPtr id;
/// Данные для вставки
const char * data = nullptr;
ws.ignore(pos, end);
/// INSERT INTO
if (!s_insert.ignore(pos, end, max_parsed_pos, expected)
|| !ws.ignore(pos, end)
|| !s_into.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!name_p.parse(pos, end, table, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (s_dot.ignore(pos, end, max_parsed_pos, expected))
{
database = table;
if (!name_p.parse(pos, end, table, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
}
ws.ignore(pos, end);
if (s_id.ignore(pos, end, max_parsed_pos, expected))
{
if (!s_eq.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!id_p.parse(pos, end, id, max_parsed_pos, expected))
return false;
}
ws.ignore(pos, end);
/// Есть ли список столбцов
if (s_lparen.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!columns_p.parse(pos, end, columns, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!s_rparen.ignore(pos, end, max_parsed_pos, expected))
return false;
}
ws.ignore(pos, end);
Pos before_select = pos;
/// VALUES или FORMAT или SELECT
if (s_values.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
data = pos;
pos = end;
}
else if (s_format.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!name_p.parse(pos, end, format, max_parsed_pos, expected))
return false;
/// Данные начинаются после первого перевода строки, если такой есть, или после всех пробельных символов, иначе.
ParserWhiteSpaceOrComments ws_without_nl(false);
ws_without_nl.ignore(pos, end);
if (pos != end && *pos == ';')
throw Exception("You have excessive ';' symbol before data for INSERT.\n"
"Example:\n\n"
"INSERT INTO t (x, y) FORMAT TabSeparated\n"
"1\tHello\n"
"2\tWorld\n"
"\n"
"Note that there is no ';' in first line.", ErrorCodes::SYNTAX_ERROR);
if (pos != end && *pos == '\n')
++pos;
data = pos;
pos = end;
}
else if (s_select.ignore(pos, end, max_parsed_pos, expected))
{
pos = before_select;
ParserSelectQuery select_p;
select_p.parse(pos, end, select, max_parsed_pos, expected);
}
else
{
expected = "VALUES or FORMAT or SELECT";
return false;
}
auto query = std::make_shared<ASTInsertQuery>(StringRange(begin, data ? data : pos));
node = query;
if (database)
query->database = typeid_cast<ASTIdentifier &>(*database).name;
query->table = typeid_cast<ASTIdentifier &>(*table).name;
if (id)
query->insert_id = safeGet<const String &>(typeid_cast<ASTLiteral &>(*id).value);
if (format)
query->format = typeid_cast<ASTIdentifier &>(*format).name;
query->columns = columns;
query->select = select;
query->data = data != end ? data : NULL;
query->end = end;
if (columns)
query->children.push_back(columns);
if (select)
query->children.push_back(select);
return true;
}
bool ParserInsertQuery::parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected)
{
Pos begin = pos;
ParserWhitespaceOrComments ws;
ParserKeyword s_insert_into("INSERT INTO");
ParserKeyword s_dot(".");
ParserKeyword s_values("VALUES");
ParserKeyword s_format("FORMAT");
ParserKeyword s_select("SELECT");
ParserKeyword s_lparen("(");
ParserKeyword s_rparen(")");
ParserIdentifier name_p;
ParserList columns_p(std::make_unique<ParserCompoundIdentifier>(), std::make_unique<ParserString>(","), false);
ASTPtr database;
ASTPtr table;
ASTPtr columns;
ASTPtr format;
ASTPtr select;
/// Insertion data
const char * data = nullptr;
ws.ignore(pos, end);
if (!s_insert_into.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!name_p.parse(pos, end, table, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (s_dot.ignore(pos, end, max_parsed_pos, expected))
{
database = table;
if (!name_p.parse(pos, end, table, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
}
ws.ignore(pos, end);
/// Is there a list of columns
if (s_lparen.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!columns_p.parse(pos, end, columns, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!s_rparen.ignore(pos, end, max_parsed_pos, expected))
return false;
}
ws.ignore(pos, end);
Pos before_select = pos;
/// VALUES or FORMAT or SELECT
if (s_values.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
data = pos;
pos = end;
}
else if (s_format.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!name_p.parse(pos, end, format, max_parsed_pos, expected))
return false;
/// Data starts after the first newline, if there is one, or after all the whitespace characters, otherwise.
ParserWhitespaceOrComments ws_without_nl(false);
ws_without_nl.ignore(pos, end);
if (pos != end && *pos == ';')
throw Exception("You have excessive ';' symbol before data for INSERT.\n"
"Example:\n\n"
"INSERT INTO t (x, y) FORMAT TabSeparated\n"
"1\tHello\n"
"2\tWorld\n"
"\n"
"Note that there is no ';' in first line.", ErrorCodes::SYNTAX_ERROR);
if (pos != end && *pos == '\n')
++pos;
data = pos;
pos = end;
}
else if (s_select.ignore(pos, end, max_parsed_pos, expected))
{
pos = before_select;
ParserSelectQuery select_p;
select_p.parse(pos, end, select, max_parsed_pos, expected);
}
else
{
expected = "VALUES or FORMAT or SELECT";
return false;
}
auto query = std::make_shared<ASTInsertQuery>(StringRange(begin, data ? data : pos));
node = query;
if (database)
query->database = typeid_cast<ASTIdentifier &>(*database).name;
query->table = typeid_cast<ASTIdentifier &>(*table).name;
if (format)
query->format = typeid_cast<ASTIdentifier &>(*format).name;
query->columns = columns;
query->select = select;
query->data = data != end ? data : NULL;
query->end = end;
if (columns)
query->children.push_back(columns);
if (select)
query->children.push_back(select);
return true;
}