zhaojinchao95 commented on code in PR #26419:
URL: https://github.com/apache/shardingsphere/pull/26419#discussion_r1233320432
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kernel/sql-federation/core/src/main/java/org/apache/shardingsphere/sqlfederation/engine/SQLFederationEngine.java:
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@@ -191,6 +191,9 @@ private ExecutionPlanCacheKey buildCacheKey(final
SQLFederationExecutorContext f
private void registerTableScanExecutor(final Schema sqlFederationSchema,
final DriverExecutionPrepareEngine<JDBCExecutionUnit, Connection> prepareEngine,
final JDBCExecutorCallback<?
extends ExecuteResult> callback, final SQLFederationExecutorContext
federationContext,
final OptimizerContext
optimizerContext) {
+ if (sqlFederationSchema == null) {
Review Comment:
Please change to `null == sqlFederationSchema`
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