37 lines
1.4 KiB
Markdown
37 lines
1.4 KiB
Markdown
# SHOW FUNCTION
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## Syntax
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```
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SHOW FUNCTION [FROM db]
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```
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## Description
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查看数据库下所有的自定义函数。如果用户指定了数据库，那么查看对应数据库的，否则直接查询当前会话所在数据库
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需要对这个数据库拥有 `SHOW` 权限
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## Parameters
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> `db`: 要查询的数据库名字
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## Examples
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```
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mysql> show function in testDb\G
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*************************** 1. row ***************************
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Signature: my_count(BIGINT)
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Return Type: BIGINT
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Function Type: Aggregate
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Intermediate Type: NULL
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Properties: {"object_file":"http://host:port/libudasample.so","finalize_fn":"_ZN9doris_udf13CountFinalizeEPNS_15FunctionContextERKNS_9BigIntValE","init_fn":"_ZN9doris_udf9CountInitEPNS_15FunctionContextEPNS_9BigIntValE","merge_fn":"_ZN9doris_udf10CountMergeEPNS_15FunctionContextERKNS_9BigIntValEPS2_","md5":"37d185f80f95569e2676da3d5b5b9d2f","update_fn":"_ZN9doris_udf11CountUpdateEPNS_15FunctionContextERKNS_6IntValEPNS_9BigIntValE"}
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*************************** 2. row ***************************
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Signature: my_add(INT,INT)
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Return Type: INT
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Function Type: Scalar
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Intermediate Type: NULL
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Properties: {"symbol":"_ZN9doris_udf6AddUdfEPNS_15FunctionContextERKNS_6IntValES4_","object_file":"http://host:port/libudfsample.so","md5":"cfe7a362d10f3aaf6c49974ee0f1f878"}
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2 rows in set (0.00 sec)
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```
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