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DROP VIEW support. (#9831)

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This commit is contained in:
Amos Bird 2020-03-24 06:28:30 +08:00 committed by GitHub
parent 38cbf3e6f7
commit 0744606fc3
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 34 additions and 12 deletions
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11
dbms/src/Interpreters/InterpreterDropQuery.cpp
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@ -50,7 +50,7 @@ BlockIO InterpreterDropQuery::execute()
else if (!drop.database.empty())
return executeToDatabase(drop.database, drop.kind, drop.if_exists);
else
throw Exception("Nothing to drop, both names are empty.", ErrorCodes::LOGICAL_ERROR);
throw Exception("Nothing to drop, both names are empty", ErrorCodes::LOGICAL_ERROR);
}
@ -72,7 +72,7 @@ BlockIO InterpreterDropQuery::executeToTable(
{
if (if_exists)
return {};
throw Exception("Temporary table " + backQuoteIfNeed(table_name) + " doesn't exist.",
throw Exception("Temporary table " + backQuoteIfNeed(table_name) + " doesn't exist",
ErrorCodes::UNKNOWN_TABLE);
}
@ -84,6 +84,9 @@ BlockIO InterpreterDropQuery::executeToTable(
if (database && table)
{
if (query_ptr->as<ASTDropQuery &>().is_view && !table->isView())
throw Exception("Table " + backQuoteIfNeed(table_name) + " is not a View", ErrorCodes::LOGICAL_ERROR);
auto table_id = table->getStorageID();
if (kind == ASTDropQuery::Kind::Detach)
{
@ -242,7 +245,7 @@ BlockIO InterpreterDropQuery::executeToDatabase(const String & database_name, AS
{
if (kind == ASTDropQuery::Kind::Truncate)
{
throw Exception("Unable to truncate database.", ErrorCodes::SYNTAX_ERROR);
throw Exception("Unable to truncate database", ErrorCodes::SYNTAX_ERROR);
}
else if (kind == ASTDropQuery::Kind::Detach || kind == ASTDropQuery::Kind::Drop)
{
@ -279,7 +282,7 @@ DatabaseAndTable InterpreterDropQuery::tryGetDatabaseAndTable(const String & dat
{
StoragePtr table = database->tryGetTable(context, table_name);
if (!table && !if_exists)
throw Exception("Table " + backQuoteIfNeed(database_name) + "." + backQuoteIfNeed(table_name) + " doesn't exist.",
throw Exception("Table " + backQuoteIfNeed(database_name) + "." + backQuoteIfNeed(table_name) + " doesn't exist",
ErrorCodes::UNKNOWN_TABLE);
return {std::move(database), std::move(table)};

8
dbms/src/Parsers/ASTDropQuery.cpp
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@ -47,10 +47,12 @@ void ASTDropQuery::formatQueryImpl(const FormatSettings & settings, FormatState
if (table.empty() && !database.empty())
settings.ostr << "DATABASE ";
else if (!is_dictionary)
settings.ostr << "TABLE ";
else
else if (is_dictionary)
settings.ostr << "DICTIONARY ";
else if (is_view)
settings.ostr << "VIEW ";
else
settings.ostr << "TABLE ";
if (if_exists)
settings.ostr << "IF EXISTS ";

3
dbms/src/Parsers/ASTDropQuery.h
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@ -28,6 +28,9 @@ public:
/// We dropping dictionary, so print correct word
bool is_dictionary{false};
/// Same as above
bool is_view{false};
/** Get the text that identifies this element. */
String getID(char) const override;
ASTPtr clone() const override;

15
dbms/src/Parsers/ParserDropQuery.cpp
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@ -16,6 +16,7 @@ bool parseDropQuery(IParser::Pos & pos, ASTPtr & node, Expected & expected)
ParserKeyword s_temporary("TEMPORARY");
ParserKeyword s_table("TABLE");
ParserKeyword s_dictionary("DICTIONARY");
ParserKeyword s_view("VIEW");
ParserKeyword s_database("DATABASE");
ParserToken s_dot(TokenType::Dot);
ParserKeyword s_if_exists("IF EXISTS");
@ -27,6 +28,7 @@ bool parseDropQuery(IParser::Pos & pos, ASTPtr & node, Expected & expected)
bool if_exists = false;
bool temporary = false;
bool is_dictionary = false;
bool is_view = false;
if (s_database.ignore(pos, expected))
{
@ -44,14 +46,16 @@ bool parseDropQuery(IParser::Pos & pos, ASTPtr & node, Expected & expected)
}
else
{
if (s_temporary.ignore(pos, expected))
if (s_view.ignore(pos, expected))
is_view = true;
else if (s_dictionary.ignore(pos, expected))
is_dictionary = true;
else if (s_temporary.ignore(pos, expected))
temporary = true;
if (!s_table.ignore(pos, expected))
if (!is_view && !is_dictionary && !s_table.ignore(pos, expected))
{
if (!s_dictionary.ignore(pos, expected))
return false;
is_dictionary = true;
return false;
}
if (s_if_exists.ignore(pos, expected))
@ -81,6 +85,7 @@ bool parseDropQuery(IParser::Pos & pos, ASTPtr & node, Expected & expected)
query->if_exists = if_exists;
query->temporary = temporary;
query->is_dictionary = is_dictionary;
query->is_view = is_view;
tryGetIdentifierNameInto(database, query->database);
tryGetIdentifierNameInto(table, query->table);

0
dbms/tests/queries/0_stateless/01210_drop_view.reference Normal file
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9
dbms/tests/queries/0_stateless/01210_drop_view.sql Normal file
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@ -0,0 +1,9 @@
DROP VIEW IF EXISTS v_01210;
DROP TABLE IF EXISTS mv_01210;
DROP TABLE IF EXISTS `.inner.mv_01210`;
CREATE VIEW IF NOT EXISTS v_01210 AS SELECT 1;
CREATE MATERIALIZED VIEW IF NOT EXISTS mv_01210 ENGINE Log AS SELECT 1;
DROP VIEW v_01210;
DROP VIEW mv_01210;