Simon Riggs f6d208d6e5 TABLESAMPLE, SQL Standard and extensible ... Add a TABLESAMPLE clause to SELECT statements that allows user to specify random BERNOULLI sampling or block level SYSTEM sampling. Implementation allows for extensible sampling functions to be written, using a standard API. Basic version follows SQLStandard exactly. Usable concrete use cases for the sampling API follow in later commits. Petr Jelinek Reviewed by Michael Paquier and Simon Riggs		2015-05-15 14:37:10 -04:00
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file_fdw.c	TABLESAMPLE, SQL Standard and extensible	2015-05-15 14:37:10 -04:00
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