User-defined function (UDF) that reproduces the P_INTERSECT operator to compare two or more period expressions and return the overlapping portion of the period expressions.
More information about the source function .
PERIOD_INTERSECT_UDF(PERIODS ARRAY)
Parameters
PERIODS ARRAY
All the period expressions to be compared.
Returns
The overlapped portion of the period expressions.
Migration example
Input:
IN -> Teradata_01.sql
SELECT
PERIOD(DATE '2009-01-01', DATE '2010-09-24')
P_INTERSECT
PERIOD(DATE '2009-02-01', DATE '2009-06-24');
Output:
OUT -> Teradata_01.sql
SELECT
PUBLIC.PERIOD_INTERSECT_UDF(ARRAY_CONSTRUCT(PUBLIC.PERIOD_UDF(DATE '2009-01-01', DATE '2010-09-24') !!!RESOLVE EWI!!! /*** SSC-EWI-TD0053 - SNOWFLAKE DOES NOT SUPPORT THE PERIOD DATATYPE, ALL PERIODS ARE HANDLED AS VARCHAR INSTEAD ***/!!!, PUBLIC.PERIOD_UDF(DATE '2009-02-01', DATE '2009-06-24') !!!RESOLVE EWI!!! /*** SSC-EWI-TD0053 - SNOWFLAKE DOES NOT SUPPORT THE PERIOD DATATYPE, ALL PERIODS ARE HANDLED AS VARCHAR INSTEAD ***/!!!)) !!!RESOLVE EWI!!! /*** SSC-EWI-TD0053 - SNOWFLAKE DOES NOT SUPPORT THE PERIOD DATATYPE, ALL PERIODS ARE HANDLED AS VARCHAR INSTEAD ***/!!!;
