strongduanmu opened a new issue #13537:
URL: https://github.com/apache/shardingsphere/issues/13537
## Bug Report
### Which version of ShardingSphere did you use?
master branch
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
execute success
### Actual behavior
```
[INFO ] 2021-11-10 18:59:44.945 [Connection-1-ThreadExecutor]
ShardingSphere-SQL - Actual SQL: ds_0 ::: SHOW COLUMNS FROM t_order
[ERROR] 2021-11-10 18:59:46.433 [Connection-1-ThreadExecutor]
o.a.s.p.f.c.CommandExecutorTask - Exception occur:
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(String.java:1967)
at
org.apache.shardingsphere.infra.rewrite.sql.impl.AbstractSQLBuilder.getConjunctionText(AbstractSQLBuilder.java:64)
at
org.apache.shardingsphere.infra.rewrite.sql.impl.AbstractSQLBuilder.toSQL(AbstractSQLBuilder.java:47)
at
org.apache.shardingsphere.infra.rewrite.engine.RouteSQLRewriteEngine.rewrite(RouteSQLRewriteEngine.java:52)
at
org.apache.shardingsphere.infra.rewrite.SQLRewriteEntry.rewrite(SQLRewriteEntry.java:71)
at
org.apache.shardingsphere.infra.context.kernel.KernelProcessor.rewrite(KernelProcessor.java:59)
at
org.apache.shardingsphere.infra.context.kernel.KernelProcessor.generateExecutionContext(KernelProcessor.java:47)
at
org.apache.shardingsphere.proxy.backend.communication.DatabaseCommunicationEngine.execute(DatabaseCommunicationEngine.java:121)
at
org.apache.shardingsphere.proxy.backend.text.data.impl.SchemaAssignedDatabaseBackendHandler.execute(SchemaAssignedDatabaseBackendHandler.java:55)
at
org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:61)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:99)
at
org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
### Reason analyze (If you can)
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule
configuration, when exception occur etc.
config file
```
schemaName: encrypt_db
dataSources:
ds_0:
url: jdbc:mysql://127.0.0.1:3306/encrypt?serverTimezone=UTC&useSSL=false
username: root
password: 123456
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
rules:
- !ENCRYPT
encryptors:
sursen_encryptor:
type: SURSEN
tables:
t_order:
columns:
order_id:
cipherColumn: order_id
encryptorName: sursen_encryptor
user_id:
cipherColumn: user_id
encryptorName: sursen_encryptor
content:
cipherColumn: content
encryptorName: sursen_encryptor
t_order_item:
columns:
item_id:
cipherColumn: item_id
encryptorName: sursen_encryptor
order_id:
cipherColumn: order_id
encryptorName: sursen_encryptor
user_id:
cipherColumn: user_id
encryptorName: sursen_encryptor
sell_price:
cipherColumn: sell_price
encryptorName: sursen_encryptor
```
And then execute sql like this:
```sql
SELECT * FROM t_order o INNER JOIN t_order_item i WHERE o.order_id =
i.item_id;
```
### Example codes for reproduce this issue (such as a github link).
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