Add SQL snippits

home/public/snippits/sql/create_sample_table_inline.sql

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+-- https://stackoverflow.com/questions/58121195/bigquery-create-small-sample-table-all-in-one-query
+
+with foo as (
+     SELECT * FROM UNNEST([
+       STRUCT(1 AS a, 'Alpha' AS b),
+       (2, 'Bravo'),
+       (3, 'Charlie'),
+       (4, 'Delta')
+       ])
+       )
+SELECT * FROM foo

home/public/snippits/sql/split.sql

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+-- Experiments with creating dummy records and splitting strings to create new columns
+--
+-- https://stackoverflow.com/questions/44056274/splitting-substrings-and-creating-new-columns-for-each-in-big-query
+
+-- Create a dummy record
+WITH dummy as (
+    SELECT "foo" as foo, 1 as bar, "a;b;c" as baz
+
+ )
+-- Split out a semicolon separatated field
+ ,splitup as (
+SELECT
+  foo,bar,split(baz,";") as baz_split
+  FROM dummy
+ )
+-- create new columns from the split values
+ SELECT foo,
+   bar,
+   baz_split[OFFSET(0)] AS thing1,
+   baz_split[OFFSET(1)] AS thing2,
+   baz_split[OFFSET(2)] AS thing3
+ from splitup