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Fix wrong serde of ColumnsDescription

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This commit is contained in:
Alexey Milovidov 2021-01-23 04:11:18 +03:00
parent 7d2108d4e9
commit 7005e3a826
3 changed files with 54 additions and 21 deletions
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53
src/Storages/ColumnsDescription.cpp
View File

@ -62,6 +62,8 @@ bool ColumnDescription::operator==(const ColumnDescription & other) const
void ColumnDescription::writeText(WriteBuffer & buf) const
{
/// NOTE: Serialization format is insane.
writeBackQuotedString(name, buf);
writeChar(' ', buf);
writeEscapedString(type->getName(), buf);
@ -99,32 +101,41 @@ void ColumnDescription::writeText(WriteBuffer & buf) const
void ColumnDescription::readText(ReadBuffer & buf)
{
ParserColumnDeclaration column_parser(/* require type */ true);
String column_line;
readEscapedStringUntilEOL(column_line, buf);
ASTPtr ast = parseQuery(column_parser, column_line, "column parser", 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
if (const auto * col_ast = ast->as<ASTColumnDeclaration>())
readBackQuotedString(name, buf);
assertChar(' ', buf);
String type_string;
readEscapedString(type_string, buf);
type = DataTypeFactory::instance().get(type_string);
if (checkChar('\t', buf))
{
name = col_ast->name;
type = DataTypeFactory::instance().get(col_ast->type);
String modifiers;
readEscapedStringUntilEOL(modifiers, buf);
if (col_ast->default_expression)
ParserColumnDeclaration column_parser(/* require type */ true);
ASTPtr ast = parseQuery(column_parser, "x T " + modifiers, "column parser", 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
if (const auto * col_ast = ast->as<ASTColumnDeclaration>())
{
default_desc.kind = columnDefaultKindFromString(col_ast->default_specifier);
default_desc.expression = std::move(col_ast->default_expression);
if (col_ast->default_expression)
{
default_desc.kind = columnDefaultKindFromString(col_ast->default_specifier);
default_desc.expression = std::move(col_ast->default_expression);
}
if (col_ast->comment)
comment = col_ast->comment->as<ASTLiteral &>().value.get<String>();
if (col_ast->codec)
codec = CompressionCodecFactory::instance().validateCodecAndGetPreprocessedAST(col_ast->codec, type, false);
if (col_ast->ttl)
ttl = col_ast->ttl;
}
if (col_ast->comment)
comment = col_ast->comment->as<ASTLiteral &>().value.get<String>();
if (col_ast->codec)
codec = CompressionCodecFactory::instance().validateCodecAndGetPreprocessedAST(col_ast->codec, type, false);
if (col_ast->ttl)
ttl = col_ast->ttl;
else
throw Exception("Cannot parse column description", ErrorCodes::CANNOT_PARSE_TEXT);
}
else
throw Exception("Cannot parse column description", ErrorCodes::CANNOT_PARSE_TEXT);
}

3
tests/queries/0_stateless/01669_columns_declaration_serde.reference Normal file
View File

@ -0,0 +1,3 @@
Hello, world!
Hello, world!
1 \r\n\t\\\n

19
tests/queries/0_stateless/01669_columns_declaration_serde.sql Normal file
View File

@ -0,0 +1,19 @@
CREATE TEMPORARY TABLE test ("\\" String DEFAULT '\r\n\t\\' || '
');
INSERT INTO test VALUES ('Hello, world!');
INSERT INTO test ("\\") VALUES ('Hello, world!');
SELECT * FROM test;
DROP TEMPORARY TABLE test;
DROP TABLE IF EXISTS test;
CREATE TABLE test (x UInt64, "\\" String DEFAULT '\r\n\t\\' || '
') ENGINE = MergeTree ORDER BY x;
INSERT INTO test (x) VALUES (1);
SELECT * FROM test;
DROP TABLE test;