我有简单的文件 FD_GROUP.TXT ,内容为:
~0100〜^〜乳制品和蛋制品〜
~0200〜^〜香料和草药〜
~0300~ ^〜婴儿食品〜
~0400〜^〜脂肪和油〜
~0500~ ^〜家禽产品〜
我正在尝试使用Azure Data Factory将这些文件(一些包含700,000行)批量导入SQL数据库。
策略是首先使用 ^ 分隔列,然后用空字符替换波浪号(〜),这样我就会丢失波浪号(〜),然后插入。
1。 SQL解决方案:
DECLARE @CsvFilePath NVARCHAR(1000) = 'D:\CodePurehope\Dev\NutrientData\FD_GROUP.txt';
CREATE TABLE #TempTable
(
[FoodGroupCode] VARCHAR(666) NOT NULL,
[FoodGroupDescription] VARCHAR(60) NOT NULL
)
DECLARE @sql NVARCHAR(4000) = 'BULK INSERT #TempTable FROM ''' + @CsvFilePath + ''' WITH ( FIELDTERMINATOR =''^'', ROWTERMINATOR =''\n'' )';
EXEC(@sql);
UPDATE #TempTable
SET [FoodGroupCode] = REPLACE([FoodGroupCode], '~', ''),
[FoodGroupDescription] = REPLACE([FoodGroupDescription], '~', '')
GO
INSERT INTO [dbo].[FoodGroupDescriptions]
(
[FoodGroupCode],
[FoodGroupDescription]
)
SELECT
[FoodGroupCode],
[FoodGroupDescription]
FROM
#TempTable
GO
DROP TABLE #TempTable
使用 ^ 分隔的平面文件源和派生列转换,以替换上面照片中显示的不必要的波浪号(〜)。
如何使用Microsoft Azure Data Factory进行此操作?
我将 FD_GROUP.TXT 上传到Azure存储Blob上作为输入,并在Azure SQL Server上准备好表格以用于输出。
我有:
- 2个链接服务:AzureStorage和AzureSQL
- 2个数据集:Blob作为输入,SQL作为输出
- 1管道
FoodGroupDescriptionsAzureBlob 设置
{
"name": "FoodGroupDescriptionsAzureBlob",
"properties": {
"structure": [
{
"name": "FoodGroupCode",
"type": "Int32"
},
{
"name": "FoodGroupDescription",
"type": "String"
}
],
"published": false,
"type": "AzureBlob",
"linkedServiceName": "AzureStorageLinkedService",
"typeProperties": {
"fileName": "FD_GROUP.txt",
"folderPath": "nutrition-data/NutrientData/",
"format": {
"type": "TextFormat",
"rowDelimiter": "\n",
"columnDelimiter": "^"
}
},
"availability": {
"frequency": "Minute",
"interval": 15
}
}
}
FoodGroupDescriptionsSQLAzure 设置
{
"name": "FoodGroupDescriptionsSQLAzure",
"properties": {
"structure": [
{
"name": "FoodGroupCode",
"type": "Int32"
},
{
"name": "FoodGroupDescription",
"type": "String"
}
],
"published": false,
"type": "AzureSqlTable",
"linkedServiceName": "AzureSqlLinkedService",
"typeProperties": {
"tableName": "FoodGroupDescriptions"
},
"availability": {
"frequency": "Minute",
"interval": 15
}
}
}
FoodGroupDescriptionsPipeline 设置
{
"name": "FoodGroupDescriptionsPipeline",
"properties": {
"description": "Copy data from a blob to Azure SQL table",
"activities": [
{
"type": "Copy",
"typeProperties": {
"source": {
"type": "BlobSource"
},
"sink": {
"type": "SqlSink",
"writeBatchSize": 10000,
"writeBatchTimeout": "60.00:00:00"
}
},
"inputs": [
{
"name": "FoodGroupDescriptionsAzureBlob"
}
],
"outputs": [
{
"name": "FoodGroupDescriptionsSQLAzure"
}
],
"policy": {
"timeout": "01:00:00",
"concurrency": 1,
"executionPriorityOrder": "NewestFirst"
},
"scheduler": {
"frequency": "Minute",
"interval": 15
},
"name": "CopyFromBlobToSQL",
"description": "Bulk Import FoodGroupDescriptions"
}
],
"start": "2015-07-13T00:00:00Z",
"end": "2015-07-14T00:00:00Z",
"isPaused": false,
"hubName": "gymappdatafactory_hub",
"pipelineMode": "Scheduled"
}
}
这个东西在Azure Data Factory上不起作用+我不知道如何在这个上下文中使用replace。任何帮助表示赞赏。
答案 0 :(得分:1)
我正在使用您的代码,我可以通过执行以下操作来实现它:
在FoodGroupDescriptionsAzureBlob json定义中,您需要在属性节点中添加" external":true。 Blob输入文件是从外部源创建的,而不是从azure数据工厂管道创建的,通过将其设置为true,它让azure数据工厂知道此输入应该可以使用。
另外在blob输入定义中添加: " quoteChar":"〜"到"格式"节点,因为它看起来像是用"〜"这将从数据中删除那些你定义的INT将正确插入到sql表中的数据。
Full blob def:
{
"name": "FoodGroupDescriptionsAzureBlob",
"properties": {
"structure": [
{
"name": "FoodGroupCode",
"type": "Int32"
},
{
"name": "FoodGroupDescription",
"type": "String"
}
],
"published": false,
"type": "AzureBlob",
"linkedServiceName": "AzureStorageLinkedService",
"typeProperties": {
"fileName": "FD_Group.txt",
"folderPath": "nutrition-data/NutrientData/",
"format": {
"type": "TextFormat",
"rowDelimiter": "\n",
"columnDelimiter": "^",
"quoteChar": "~"
}
},
"availability": {
"frequency": "Minute",
"interval": 15
},
"external": true,
"policy": {}
}
}
由于您每隔15分钟设置一个间隔,并且管道的开始和结束日期为一整天,因此您将在整个管道运行持续时间内每15分钟创建一个切片,因为您只想在运行此操作后更改一次结束了:
"start": "2015-07-13T00:00:00Z",
"end": "2015-07-13T00:15:00Z",
这将创建1个切片。
希望这有帮助。