mchades commented on code in PR #8456:
URL: https://github.com/apache/gravitino/pull/8456#discussion_r2357241070
##########
catalogs/catalog-jdbc-oceanbase/src/test/java/org/apache/gravitino/catalog/oceanbase/operation/TestOceanBaseTableOperations.java:
##########
@@ -1133,4 +1133,37 @@ public boolean isMySQLDriverVersionSupported(String
driverVersion) {
operationsWithOceanBaseDriver.calculateDatetimePrecision("TIME", 10,
0),
"TIME type should return precision for OceanBase driver");
}
+
+ @Test
+ public void testAlterTableSkipsEmptySql() {
+ String tableName = RandomStringUtils.randomAlphabetic(16).toLowerCase() +
"_skip_empty_sql";
+ List<JdbcColumn> columns = new ArrayList<>();
+ columns.add(
+ JdbcColumn.builder()
+ .withName("col_1")
+ .withType(Types.IntegerType.get())
+ .withNullable(false)
+ .build());
+
+ // Create table
+ TABLE_OPERATIONS.create(
+ TEST_DB_NAME,
+ tableName,
+ columns.toArray(new JdbcColumn[0]),
+ "test_table",
+ Collections.emptyMap(),
+ null,
+ Distributions.NONE,
+ Indexes.EMPTY_INDEXES);
+
+ // Alter table with one valid change and one empty SQL change
+ TableChange validChange =
+ TableChange.updateColumnComment(new String[] {"col_1"}, "Updated
comment");
+ TableChange emptyChange = TableChange.deleteColumn(new String[]
{"non_existent_col"}, true);
Review Comment:
why did you say the `deleteColumn` change is an empty SQL change? I saw it
will skipe the empty generated SQL by 279L:
https://github.com/apache/gravitino/blob/f70a235227042f505cd6ec6982497b5e4c7961ca/catalogs/catalog-jdbc-oceanbase/src/main/java/org/apache/gravitino/catalog/oceanbase/operation/OceanBaseTableOperations.java#L275-L281
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