New Features

ApsaraDB RDS for PostgreSQL - New Minor Versions Released for PostgreSQL 10, 11, 12, and 13

The new minor version of 20211130 has been released with new features, bug fixes, and performance improvements.
Content

Target customers: all users. Features released: New features PostgreSQL 10/11/12/13 • Ganos ◊ The ST_LinearStretch function is added to truncate a raster object and then linearly stretch the raster object based on the maximum and minimum stretch ratios. ◊ The ST_BuildPercentiles function is added to return the percentage of pixels for a set of raster bands. ◊ The ST_ComputeStatistics function is added to return statistics of a raster object, including histograms and percentage. ◊ The ST_Percentile function is added to return the percentage of pixels for a raster band. ◊ New functions are added to return the geometry of raster pixels: ♦ ST_PixelAsPolygon: returns the polygon geometry that bounds the pixel for a particular row and column. ♦ ST_PixelAsPolygons: returns the polygon geometry that bounds every pixel of a raster band along with the X and the Y raster coordinates of each pixel. ♦ ST_PixelAsPoint: returns a point geometry of the upper-left corner of a pixel. ♦ ST_PixelAsCentroid: returns the centroid (point geometry) of the area represented by a pixel. ♦ ST_PixelAsPoints: returns a point geometry for each pixel of a raster band along with the X and the Y raster coordinates of each pixel. The coordinates of the point geometry are of the upper-left corner of the pixel. ♦ ST_PixelAsCentroids: returns the centroid (point geometry) for each pixel of a raster band along with the X and the Y raster coordinates of each pixel. The point geometry is the centroid of the area represented by a pixel. ◊ Ganos Geometry is compatible with PostGIS 3.1.4. • The PostGIS plug-in is updated to V3.1.4. • The pg_jieba plug-in is supported. • The pldebugger plug-in is supported. • PostgreSQL 10 ◊ The minor version is updated to 10.19. • PostgreSQL 13 ◊ The minor version is updated to 13.5. ◊ The timescaledb plug-in of V2.5.0 is supported. • The log_statement parameter can be configured for sessions, users, and databases. Performance improvements PostgreSQL 10/11/12/13 • Ganos ◊ The ST_SummaryStats and ST_BuildHistogram functions can be used to perform parallel computing. ◊ The ST_ExportTo function can return false instead of an error message if the destination file already exists. ◊ The ST_ImportFrom function can return error details to help troubleshooting. ◊ The ST_AsDatasetFile function can return data in the GRIB2 format. Bug fixes PostgreSQL 10/11/12 • The bug due to which the pg_cron plug-in causes memory leaks when querying cron job logs is fixed. PostgreSQL 11/12/13 • The bug that privileged accounts have no permissions to execute the SHOW SHARED_PRELOAD_LIBRARIES statement is fixed.

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