kingbabingge commented on issue #18660:
URL: https://github.com/apache/doris/issues/18660#issuecomment-1558522362
```java
// metabase l链接doris 执行一个设置语句，
set sql_mode = concat(@@sql_mode,',STRICT_TRANS_TABLES');
/**
* -FE 异常
2023-05-22 08:37:40,443 WARN (mysql-nio-pool-1101|658532)
[StmtExecutor.execute():589] execute Exception. stmt[93866,
e2855042a75b4e68-a997203f6f74e72c]
org.apache.doris.common.AnalysisException: errCode = 2, detailMessage = Set
statement does't support computing expr:concat('STRICT_TRANS_TABLES',
',STRICT_TRANS_TABLES')
at org.apache.doris.analysis.SetVar.analyze(SetVar.java:114)
~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.analysis.SetStmt.analyze(SetStmt.java:54)
~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.analyze(StmtExecutor.java:749)
~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:446)
~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:409)
~[doris-fe.jar:1.2-SNAPSHOT]
at
org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:330)
~[doris-fe.jar:1.2-SNAPSHOT]
at
org.apache.doris.qe.ConnectProcessor.dispatch(ConnectProcessor.java:471)
~[doris-fe.jar:1.2-SNAPSHOT]
at
org.apache.doris.qe.ConnectProcessor.processOnce(ConnectProcessor.java:698)
~[doris-fe.jar:1.2-SNAPSHOT]
at
org.apache.doris.mysql.ReadListener.lambda$handleEvent$0(ReadListener.java:52)
~[doris-fe.jar:1.2-SNAPSHOT]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
~[?:1.8.0_362]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
~[?:1.8.0_362]
at java.lang.Thread.run(Thread.java:750) ~[?:1.8.0_362]
// 抛出异常
// org.apache.doris.analysis.Expr#getResultValue
final Expr literalExpr = value.getResultValue(false);
if (!(literalExpr instanceof LiteralExpr)) {
throw new AnalysisException("Set statement does't support
computing expr:" + literalExpr.toSql());
}
*/
使用arthas跟踪`org.apache.doris.analysis.ExpressionFunctions$FEFunctionSignature.getArgTypes`
```shell
Affect(class count: 1 , method count: 1) cost in 212 ms, listenerId: 30
method=org.apache.doris.analysis.ExpressionFunctions$FEFunctionSignature.getArgTypes
location=AtEnter
ts=2023-05-19 13:05:27; [cost=0.04367ms] result=@ArrayList[
@Object[][isEmpty=true;size=0],
@FEFunctionSignature[
name=@String[concat],
argTypes=@Type[][isEmpty=false;size=1],
returnType=@ScalarType[VARCHAR(*)],
],
null,
]
method=org.apache.doris.analysis.ExpressionFunctions$FEFunctionSignature.getArgTypes
location=AtExit
ts=2023-05-19 13:05:27; [cost=1.0897417243898684E10ms] result=@ArrayList[
@Object[][isEmpty=true;size=0],
@FEFunctionSignature[
name=@String[concat],
argTypes=@Type[][isEmpty=false;size=1],
returnType=@ScalarType[VARCHAR(*)],
],
@Type[][
@ScalarType[VARCHAR(100)],
```
发现 ScalarType 中 len 变成 100，导致 DEFAULT_VARCHAR=@ScalarType[VARCHAR(100)],
`org.apache.doris.analysis.ExpressionFunctions$FEFunctionSignature.getArgTypes `
```shell
method=org.apache.doris.analysis.ExpressionFunctions$FEFunctionSignature.getArgTypes
location=AtExit
ts=2023-05-19 13:09:36; [cost=1.0897666158566805E10ms] result=@ArrayList[
@Object[][isEmpty=true;size=0],
@FEFunctionSignature[
name=@String[concat],
argTypes=@Type[][
@ScalarType[VARCHAR(100)],
],
returnType=@ScalarType[
DATETIME_PRECISION=@Integer[18],
DEFAULT_PRECISION=@Integer[9],
DEFAULT_SCALE=@Integer[0],
MAX_VARCHAR_LENGTH=@Integer[65533],
MAX_CHAR_LENGTH=@Integer[255],
MAX_HLL_LENGTH=@Integer[16385],
CHAR_INLINE_LENGTH=@Integer[128],
MAX_STRING_LENGTH=@Integer[2147483643],
MAX_JSONB_LENGTH=@Integer[2147483643],
MAX_PRECISION=@Integer[38],
MAX_DECIMALV2_PRECISION=@Integer[27],
MAX_DECIMALV2_SCALE=@Integer[9],
MAX_DECIMAL32_PRECISION=@Integer[9],
MAX_DECIMAL64_PRECISION=@Integer[18],
MAX_DECIMAL128_PRECISION=@Integer[38],
DEFAULT_MIN_AVG_DECIMAL128_SCALE=@Integer[4],
MAX_DATETIMEV2_SCALE=@Integer[6],
LOG=@Logger[org.apache.doris.catalog.ScalarType:INFO in
7852e922],
type=@PrimitiveType[VARCHAR],
len=@Integer[-1],
precision=@Integer[0],
scale=@Integer[0],
precisionStr=null,
scaleStr=null,
lenStr=null,
MAX_NESTING_DEPTH=@Integer[9],
INVALID=@ScalarType[INVALID_TYPE],
UNSUPPORTED=@ScalarType[UNSUPPORTED_TYPE],
NULL=@ScalarType[NULL_TYPE],
BOOLEAN=@ScalarType[BOOLEAN],
TINYINT=@ScalarType[TINYINT],
SMALLINT=@ScalarType[SMALLINT],
INT=@ScalarType[INT],
BIGINT=@ScalarType[BIGINT],
LARGEINT=@ScalarType[LARGEINT],
FLOAT=@ScalarType[FLOAT],
DOUBLE=@ScalarType[DOUBLE],
DATE=@ScalarType[DATE],
DATETIME=@ScalarType[DATETIME],
DATEV2=@ScalarType[DATEV2],
TIMEV2=@ScalarType[TIMEV2(0)],
TIME=@ScalarType[TIME],
STRING=@ScalarType[TEXT],
DEFAULT_DECIMALV2=@ScalarType[DECIMAL(9,0)],
MAX_DECIMALV2_TYPE=@ScalarType[DECIMAL(27,9)],
DEFAULT_DECIMAL32=@ScalarType[DECIMALV3(9,0)],
DEFAULT_DECIMAL64=@ScalarType[DECIMALV3(18,0)],
DEFAULT_DECIMAL128=@ScalarType[DECIMALV3(38,0)],
DEFAULT_DECIMALV3=@ScalarType[DECIMALV3(9,0)],
DEFAULT_DATETIMEV2=@ScalarType[DATETIMEV2(0)],
DATETIMEV2=@ScalarType[DATETIMEV2(0)],
DEFAULT_TIMEV2=@ScalarType[TIMEV2(0)],
DECIMALV2=@ScalarType[DECIMAL(9,0)],
DECIMAL32=@ScalarType[DECIMALV3(9,0)],
DECIMAL64=@ScalarType[DECIMALV3(18,0)],
DECIMAL128=@ScalarType[DECIMALV3(38,0)],
JSONB=@ScalarType[JSONB],
DEFAULT_VARCHAR=@ScalarType[VARCHAR(100)],
VARCHAR=@ScalarType[VARCHAR(*)],
HLL=@ScalarType[HLL],
CHAR=@ScalarType[CHAR(*)],
BITMAP=@ScalarType[BITMAP],
QUANTILE_STATE=@ScalarType[QUANTILE_STATE],
ALL=@ScalarType[ALL],
MAP=@MapType[org.apache.doris.catalog.MapType@688b5942],
ARRAY=@ArrayType[ARRAY<NULL_TYPE>],
STRUCT=@StructType[STRUCT<>],
LOG=@Logger[org.apache.doris.catalog.Type:INFO in 7852e922],
integerTypes=@ArrayList[isEmpty=false;size=5],
numericTypes=@ArrayList[isEmpty=false;size=11],
supportedTypes=@ArrayList[isEmpty=false;size=29],
arraySubTypes=@ArrayList[isEmpty=false;size=16],
trivialTypes=@ArrayList[isEmpty=false;size=25],
DATE_SUPPORTED_JAVA_TYPE=@HashSet[isEmpty=false;size=3],
DATETIME_SUPPORTED_JAVA_TYPE=@HashSet[isEmpty=false;size=3],
PrimitiveTypeToJavaClassType=@RegularImmutableMap[isEmpty=false;size=19],
OnlyMetricTypeErrorMsg=@String[Doris hll, bitmap and array
column must use with specific function, and don't support filter or group
by.please run 'help hll' or 'help bitmap' or 'help array' in your mysql
client.],
compatibilityMatrix=@PrimitiveType[][][isEmpty=false;size=33],
strictCompatibilityMatrix=@PrimitiveType[][][isEmpty=false;size=33],
],
],
```
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