ClickHouse/tests/performance/decimal_casts.xml

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<test>
<settings>
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<max_memory_usage>15G</max_memory_usage>
</settings>
<create_query>CREATE TABLE t (x UInt64, d32 Decimal32(3), d64 Decimal64(4), d128 Decimal128(5)) ENGINE = Memory</create_query>
<!-- use less threads to save memory -->
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<fill_query>INSERT INTO t SELECT number AS x, x % 1000000 AS d32, x AS d64, x d128 FROM numbers_mt(200000000) SETTINGS max_threads = 8</fill_query>
<drop_query>DROP TABLE IF EXISTS t</drop_query>
<query>SELECT toUInt32(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toInt32(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toInt64(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toUInt64(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toInt128(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
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<query>SELECT toInt256(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t LIMIT 10000000 FORMAT Null</query>
<query>SELECT toUInt256(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t LIMIT 10000000 FORMAT Null</query>
<query>SELECT toFloat32(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toFloat64(x) y, toDecimal32(y, 1), toDecimal64(y, 5), toDecimal128(y, 6) FROM t FORMAT Null</query>
<query>SELECT toInt32(d32), toInt64(d32), toInt128(d32) FROM t FORMAT Null</query>
<query>SELECT toInt32(d64), toInt64(d64), toInt128(d64) FROM t FORMAT Null</query>
<query>SELECT toInt32(d128), toInt64(d128), toInt128(d128) FROM t FORMAT Null</query>
<query>SELECT toFloat32(d32), toFloat32(d64), toFloat32(d128) FROM t FORMAT Null</query>
<query>SELECT toFloat64(d32), toFloat64(d64), toFloat64(d128) FROM t FORMAT Null</query>
<query>SELECT toInt256(d32), toInt256(d64), toInt256(d128) FROM t FORMAT Null</query>
</test>