tuichenchuxin commented on code in PR #22004:
URL: https://github.com/apache/shardingsphere/pull/22004#discussion_r1016190734
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kernel/single-table/core/src/main/java/org/apache/shardingsphere/singletable/route/engine/SingleTableStandardRouteEngine.java:
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@@ -82,9 +83,14 @@ private void route0(final RouteContext routeContext, final
SingleTableRule rule)
if (sqlStatement instanceof CreateTableStatement) {
String dataSourceName = rule.assignNewDataSourceName();
QualifiedTable table = singleTableNames.iterator().next();
- if (isTableExists(table, rule)) {
+ boolean tableExists = isTableExists(table, rule);
+ boolean ifNotExists =
CreateTableStatementHandler.ifNotExists((CreateTableStatement) sqlStatement);
+ if (tableExists && !ifNotExists) {
throw new TableExistsException(table.getTableName());
}
+ if (tableExists) {
+ return;
Review Comment:
just return may cause create table if not exists actually execute. And if
ds_0 has this table. It may execute on ds_1 ,Then we'll get two same name
single table.
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