New T-SQL Functions

Dennes Torres shows off four T-SQL functions releasing in SQL Server 2017:

Translate

Translate does the work of several replace functions, simplifying some queries.

The function is called ‘Translate’ because its main objective: transform one kind of information in another by doing a bunch of replaces.

For example: GeoJson and WKT are two different formats for coordinates. In GeoJson a coordinate is represented using the format ‘[137.4, 72.3]’ while in WKT a point is represented using the format ‘(137.4 72.3)’.

We would need several ‘Replace’s to transform GeoJson format in WKT format and the reverse. The ‘Translate’ function can do this easily.

I knew the first three, but Translate sneaked right past me.

Related Posts

Calculating Median In SQL Server 2019

Tomaz Kastrun shows that batch aggregation mode on window functions allow PERCENTILE_CONT finally to become useful: Next query, for median calculation was a window function query. SELECT DISTINCT PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY c1) OVER (PARTITION BY (SELECT 1)) AS MedianCont FROM t1 To my surprise, the performance was even worse, and at this time, […]

Read More

Odd Behavior With Altering Columns

Solomon Rutzky points out a few things which you can unintentionally change when running an ALTER TABLE [tbl] ALTER COLUMN [col] command: If the column is NOT NULL, then not specifying NOT NULL will cause it to become NULLable. The documentation for ALTER TABLE even states: ANSI_NULL defaults are always on for ALTER COLUMN; if not specified, the column is nullable. Let’s see […]

Read More

Categories

June 2017
MTWTFSS
« May Jul »
 1234
567891011
12131415161718
19202122232425
2627282930