ADF数据流提供了一个日期转换函数，在筛选日期列时可以使用该函数。以下是一个代码示例：

1. 在数据流中添加一个DerivedColumn转换

2. 在DerivedColumn转换中，使用toDateTime函数将日期列转换为DateTime格式

3. 添加一个Select转换并在Select转换中对日期列进行筛选

下面是一个示例代码：

DerivedColumn转换代码示例：

[
    {
        "name": "Convert date column to DateTime format",
        "description": "",
        "type": "DerivedColumn",
        "schema": [
            {
                "name": "DateColumn",
                "type": "String"
            }
        ],
        "derivedColumns": [
            {
                "name": "DateTimeColumn",
                "type": "DateTime",
                "expression": "toDateTime(DateColumn, 'yyyy-MM-dd')"
            }
        ],
        "inputs": [
            {
                "referenceName": "InputDataset",
                "type": "DatasetReference"
            }
        ],
        "outputs": [
            {
                "referenceName": "DerivedColumnDataset",
                "type": "DatasetReference"
            }
        ]
    }
]

Select转换代码示例：

[
    {
        "name": "Filter rows based on Date column",
        "description": "",
        "type": "Select",
        "schema": [
            {
                "name": "DateTimeColumn",
                "type": "DateTime"
            }
        ],
        "source": {
            "type": "TabularSource",
            "sourceOptions": {
                "dataset": {
                    "referenceName": "DerivedColumnDataset",
                    "type": "DatasetReference"
                }
            }
        },
        "sink": {
            "type": "TabularSink",
            "sinkOptions": {
                "dataset": {
                    "referenceName": "OutputDataset",
                    "type": "DatasetReference"
                }
            }
        },
        "translator": {
            "type": "TabularTranslator",
            "columnMappings": {
                "DateTimeColumn": "DateTimeColumn"
            }
        },
        "filter": {
            "condition": {
                "value": "DateTimeColumn > yyyy-MM-ddTHH:mm:ss