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[fix](statistics)Fix alter column stats bug (#27093) #27189

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Nov 17, 2023
Merged

[fix](statistics)Fix alter column stats bug (#27093) #27189

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10 changes: 7 additions & 3 deletions fe/fe-core/src/main/java/org/apache/doris/statistics/StatisticsRepository.java
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,8 @@
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
Expand Down Expand Up @@ -269,16 +271,18 @@ public static void alterColumnStatistics(AlterColumnStatsStmt alterColumnStatsSt
params.put("count", String.valueOf(columnStatistic.count));
params.put("ndv", String.valueOf(columnStatistic.ndv));
params.put("nullCount", String.valueOf(columnStatistic.numNulls));
params.put("min", min == null ? "NULL" : min);
params.put("max", max == null ? "NULL" : max);
params.put("min", min == null ? "NULL" :
Base64.getEncoder().encodeToString(min.getBytes(StandardCharsets.UTF_8)));
params.put("max", max == null ? "NULL" :
Base64.getEncoder().encodeToString(max.getBytes(StandardCharsets.UTF_8)));
params.put("dataSize", String.valueOf(columnStatistic.dataSize));

if (partitionIds.isEmpty()) {
// update table granularity statistics
params.put("partId", "NULL");
StatisticsUtil.execUpdate(INSERT_INTO_COLUMN_STATISTICS, params);
Env.getCurrentEnv().getStatisticsCache()
.updateColStatsCache(objects.table.getId(), -1, colName, builder.build());
.updateColStatsCache(objects.table.getId(), -1, colName, columnStatistic);
} else {
// update partition granularity statistics
for (Long partitionId : partitionIds) {
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39 changes: 39 additions & 0 deletions regression-test/suites/external_table_p2/hive/test_hive_statistic.groovy
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,45 @@ suite("test_hive_statistic", "p2") {
assertEquals(result.size(), 1)
assertEquals(result[0][6], "N/A")
assertEquals(result[0][7], "N/A")

sql """use tpch1_parquet;"""
sql """drop stats region"""
sql """alter table region modify column r_comment set stats ('row_count'='5.0', 'ndv'='5.0', 'num_nulls'='0.0', 'data_size'='330.0', 'min_value'='ges. thinly even pinto beans ca', 'max_value'='uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl');"""
sql """alter table region modify column r_name set stats ('row_count'='5.0', 'ndv'='5.0', 'num_nulls'='0.0', 'data_size'='34.0', 'min_value'='AFRICA', 'max_value'='MIDDLE EAST');"""
sql """alter table region modify column r_regionkey set stats ('row_count'='5.0', 'ndv'='5.0', 'num_nulls'='0.0', 'data_size'='20.0', 'min_value'='0', 'max_value'='4');"""
result = sql """show column stats region(r_regionkey)"""
assertEquals(result.size(), 1)
assertEquals(result[0][0], "r_regionkey")
assertEquals(result[0][1], "5.0")
assertEquals(result[0][2], "5.0")
assertEquals(result[0][3], "0.0")
assertEquals(result[0][4], "20.0")
assertEquals(result[0][5], "4.0")
assertEquals(result[0][6], "0")
assertEquals(result[0][7], "4")

result = sql """show column stats region(r_comment)"""
assertEquals(result.size(), 1)
assertEquals(result[0][0], "r_comment")
assertEquals(result[0][1], "5.0")
assertEquals(result[0][2], "5.0")
assertEquals(result[0][3], "0.0")
assertEquals(result[0][4], "330.0")
assertEquals(result[0][5], "66.0")
assertEquals(result[0][6], "\'ges. thinly even pinto beans ca\'")
assertEquals(result[0][7], "\'uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl\'")

result = sql """show column stats region(r_name)"""
assertEquals(result.size(), 1)
assertEquals(result[0][0], "r_name")
assertEquals(result[0][1], "5.0")
assertEquals(result[0][2], "5.0")
assertEquals(result[0][3], "0.0")
assertEquals(result[0][4], "34.0")
assertEquals(result[0][5], "6.8")
assertEquals(result[0][6], "\'AFRICA\'")
assertEquals(result[0][7], "\'MIDDLE EAST\'")

sql """drop catalog ${catalog_name}"""
}
}
Expand Down
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