ClickHouse/tests/queries/0_stateless/02233_interpolate_1.sql

# Test WITH FILL without INTERPOLATE
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5;

# Test INTERPOLATE with const
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS 42);

# Test INTERPOLATE with field value
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS inter);

# Test INTERPOLATE with expression
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS inter + 1);

# Test INTERPOLATE with incompatible const - should produce error
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS 'inter'); -- { serverError 6 }

# Test INTERPOLATE with incompatible expression - should produce error
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS inter||'inter'); -- { serverError 44 }

# Test INTERPOLATE with column from WITH FILL expression - should produce error
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (n AS n); -- { serverError 475 }

# Test INTERPOLATE with inconsistent column - should produce error
SELECT n, source, inter FROM (
   SELECT toFloat32(number % 10) AS n, 'original' AS source, number as inter FROM numbers(10) WHERE number % 3 = 1
) ORDER BY n WITH FILL FROM 0 TO 5.51 STEP 0.5 INTERPOLATE (inter AS source); -- { serverError 6 }