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MCOL-4757 Empty set in SELECT * INFORMATION_SCHEMA.COLUMNSTORE_TABLES WHERE TABLE_NAME='t1'

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This commit is contained in:
Alexander Barkov
2021-06-11 12:00:23 +04:00
parent 4ecd561878
commit d00ace2398
5 changed files with 177 additions and 134 deletions
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63
dbcon/mysql/is_columnstore.h
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@ -21,3 +21,66 @@ int is_columnstore_extents_plugin_init(void* p);
int is_columnstore_files_plugin_init(void* p);
int is_columnstore_tables_plugin_init(void* p);
int is_columnstore_columns_plugin_init(void* p);
class InformationSchemaCond
{
StringBuffer<MAX_FIELD_WIDTH> mBufferTableName;
StringBuffer<MAX_FIELD_WIDTH> mBufferTableSchema;
String *mTableName;
String *mTableSchema;
public:
InformationSchemaCond()
:mBufferTableName(system_charset_info),
mBufferTableSchema(system_charset_info),
mTableName(nullptr),
mTableSchema(nullptr)
{ }
const String *tableName() const { return mTableName; }
const String *tableSchema() const { return mTableSchema; }
static bool eqName(const String &a, const std::string &b)
{
return a.length() == b.length() && !memcmp(a.ptr(), b.data(), a.length());
}
static bool eqName(const String *a, const std::string &b)
{
return !a || eqName(*a, b);
}
bool match(const std::string &schema, const std::string &table) const
{
return eqName(mTableName, table) && eqName(mTableSchema, schema);
}
void getCondItem(Item_field *item_field, Item *item_const)
{
if (strcasecmp(item_field->field_name.str, "table_name") == 0)
{
mTableName = item_const->val_str(&mBufferTableName);
}
else if (strcasecmp(item_field->field_name.str, "table_schema") == 0)
{
mTableSchema = item_const->val_str(&mBufferTableSchema);
}
}
void getCondItemBoolFunc2(Item_bool_func2 *func)
{
Item_field *field = dynamic_cast<Item_field*>(func->arguments()[0]->real_item());
if (field && func->arguments()[1]->const_item())
getCondItem(field, func->arguments()[1]);
}
void getCondItems(COND* cond)
{
if (Item_bool_func2 *func = dynamic_cast<Item_bool_func2*>(cond))
{
getCondItemBoolFunc2(func);
}
else if (Item_cond_and *subcond = dynamic_cast<Item_cond_and*>(cond))
{
List_iterator<Item> li(*(subcond)->argument_list());
for (Item *item = li++; item ; item = li++ )
getCondItems(item);
}
}
};