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MCOL-406 Improved Information Schema

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* Add INFORMATION_SCHEMA.COLUMNSTORE_FILES which contains information
  about files
* Remove file information from COLUMNSTORE_EXTENTS (due to above)
* Hide columns with Object ID < 3000 (internal columns)
* Fix bad calculation in data_size columns
* Fix minor memory leak
* Add compressedSize() function to IDBFileSystem to get the used file
  size for a compressed file
* Add columnstore_info schema with utility stored procedures to access
  the information_schema tables
This commit is contained in:
Andrew Hutchings
2016-11-23 22:11:26 +00:00
parent 606284ad63
commit 3b1de94cd8
13 changed files with 422 additions and 28 deletions
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7
utils/idbdatafile/IDBFileSystem.h
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@ -84,6 +84,13 @@ public:
*/
virtual off64_t size(const char* path) const = 0;
/**
* compressedSize() returns the decompressed size of the file
* speicified by path.
* Returns the size on success, -1 on error
*/
virtual off64_t compressedSize(const char* path) const = 0;
/**
* exists() checks for the existence of a particular path.
* Returns true if exists, false otherwise.