Project: YugabyteDB (App Definition and Development / Database)
File: test-date-time-multiplication-overloads.md

title: Test the date-time multiplication overloads [YSQL] headerTitle: Test the date-time multiplication overloads linkTitle: Test multiplication overloads description: Presents code that tests the date-time multiplication overloads. [YSQL] menu: v2.18: identifier: test-date-time-multiplication-overloads parent: date-time-operators weight: 40 type: docs Try this: ```plpgsql drop procedure if exists testdatetimemultiplicationoverloads(text) cascade; create procedure testdatetimemultiplicationoverloads(i in text) language plpgsql as $body$ declare d1 constant date not null := '01-01-2020'; d2 constant date not null := '02-01-2020'; t1 constant time not null := '12:00:00'; t2 constant time not null := '13:00:00'; ts1 constant timestamp not null := '01-01-2020 12:00:00'; ts2 constant timestamp not null := '02-01-2020 12:00:00'; tstz1 constant timestamptz not null := '01-01-2020 12:00:00 UTC'; tstz2 constant timestamptz not null := '02-01-2020 12:00:00 UTC'; i1 constant interval not null := '12 hours'; i2 constant interval not null := '13 hours'; begin case i -- "date" row. when 'date-date' then if d2 * d1 then null; end if; when 'date-time' then if d2 * t1 then null; end if; when 'date-ts' then if d2 * ts1 then null; end if; when 'date-tstz' then if d2 * tstz1 then null; end if; when 'date-interval' then if d2 * i1 then null; end if; -- "time" row. when 'time-date' then if t2 * d1 then null; end if; when 'time-time' then if t2 * t1 then null; end if; when 'time-ts' then if t2 * ts1 then null; end if; when 'time-tstz' then if t2 * tstz1 then null; end if; when 'time-interval' then if t2 * i1 then null; end if; -- Plain "timestamp" row. when 'ts-date' then if ts2 * d1 then null; end if; when 'ts-time' then if ts2 * t1 then null; end if; when 'ts-ts' then if ts2 * ts1 then null; end if; when 'ts-tstz' then if ts2 * tstz1 then null; end if; when 'ts-interval' then if ts2 * i1 then null; end if; -- "timestamptz" row. when 'tstz-date' then if tstz2 * d1 then null; end if; when 'tstz-time' then if tstz2 * t1 then null; end if; when 'tstz-ts' then if tstz2 * ts1 then null; end if; when 'tstz-tstz' then if tstz2 * tstz1 then null; end if; when 'tstz-interval' then if tstz2 * i1 then null; end if; -- "interval" row. when 'interval-date' then if i2 * d1 then null; end if; when 'interval-time' then if i2 * t1 then null; end if; when 'interval-ts' then if i2 * ts1 then null; end if; when 'interval-tstz' then if i2 * tstz1 then null; end if; when 'interval-interval' then if i2 * i1 then null; end if; end case; end; $body$; drop procedure if exists confirmexpected42883(text) cascade; create procedure confirmexpected42883(i in text) language plpgsql as $body$ begin call testdatetimemultiplicationoverloads(i); assert true, 'Unexpected'; -- 42883: operator does not exist... exception when undefined_function then null; end; $body$; do $body$ begin call confirmexpected42883('date-date'); call confirmexpected42883('date-time'); call confirmexpected42883('date-ts'); call confirmexpected42883('date-tstz'); call confirmexpected42883('date-interval'); call confirmexpected42883('time-date'); call confirmexpected42883('time-time'); call confirmexpected42883('time-ts'); call confirmexpected42883('time-tstz'); call confirmexpected42883('time-interval'); call confirmexpected42883('ts-date'); call confirmexpected42883('ts-time'); call confirmexpected42883('ts-ts'); call confirmexpected42883('ts-tstz'); call confirmexpected42883('ts-interval'); call confirmexpected42883('tstz-date'); call confirmexpected42883('tstz-time'); call confirmexpected42883('tstz-ts'); call confirmexpected42883('tstz-tstz'); call confirmexpected42883('tstz-interval'); call confirmexpected42883('interval-date'); call confirmexpected42883('interval-time'); call confirmexpected42883('interval-ts'); call confirmexpected42883('interval-tstz'); call confirmexpected42883('interval-interval'); end; $body$; ``` The final anonymous block finishes silently, confirming that multiplication is not supported between a pair of date-time data types.