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MySQL Database

Version

3.2
Agent restriction

None
Processing type

Row by row & Bulk
Multi-input step

Not Supported

The MySQL Database connector allows you to execute SQL commands and stored procedures remotely in MySQL database.

Accessing input data

If the input schema is selected, the input data will be predefined in the temporary table InputData (see Predefined Variables). You can use entire table in your statements or target concrete value by using placeholder ${input}:

Placeholder	Type	Description
`${inputData}`	temporary table	Temporary table filled with input data. This table will be deleted after the connector run is over.
`${input[<row number>].<column name>}`	value	Takes the value from `<row number>`^th row (zero-based index) and column named `<column name>`.

Connector is able to process complex data columns on input schema. Such data are represented as longtext column and filled with serialized JSON.

Using placeholders

Assume the connector input data in the following format, followed by placeholders, which can be used for direct reference to the input data table:

Row number	ID	Login
`0`	1 `${input[0].ID}`	Alice `${input[0].Login}`
`1`	2 `${input[1].ID}`	Bob `${input[1].Login}`

Returning all input data

select * from InputData;

Returns the contents of the entire temporary table filled with input data:

ID	Login
1	Alice
2	Bob

Referring to a specific value from the input data

select 
    ${input[0].ID} as ID, 
    Login as Login
from InputData

Returns the list as in the previous example, except that the value from the first row and column of the ID input table is always used as ID (${input[0].ID} = 1):

ID	Login
1	Alice
1	Bob

Predefined variables

Variable	Data type	Description
`InputData`	temporary table	Temporary table filled with input data. This table will be deleted when the connector is finished running.
`@TaskRunID`	text	ID of the currently executing `TaskRun`. No need to cast as `signed` when comparing.
`@EndpointTokenID`	int	ID of the currently used `EndpointToken`.
`@EndpointTokenName`	longtext	Name of the currently used `EndpointToken`.
`@DataCheckpoint`	longtext	Datacheckpoint value.

Returning output data

If the output scheme is selected, the result of the last select statement, which is not assigned to any variable, is used as the step output. The structure of the query result must match the structure of the output schema.

If there are some complex input schemas returned to output, the result will contain column data serialized as JSON string.

Example

-- NOT the last select in the statement, data will NOT be sent to the output.
select 0 as ID, Login from InputData;

-- IS the last valid select in the statement, data WILL be sent to the output.
select 1 as ID, Login from InputData;

-- Using variable as parameter
select ID as TaskRunID, @DataCheckpoint as DataCheckpoint from InputData where ID != @TaskRunID
select @TaskRunID as TaskRunID

Logging

Direct logging from SQL connector into task run log is not supported.

Configuration

Input & Output Schema

Input

Input schema is optional

Output

Output schema is optional

Release notes

3.2.2

Connection and commands timeout is respecting task step timeout

3.2.1

Fixed processing sensitive errors

3.2.0

@EndpointTokenID, @EndpointTokenName and @DataCheckpoint variables available to use
Independence of Connection string and SQL Statement configurations

3.1.4

Updated package binaries because of changes in another included connector

3.1.0

Implemantation of debug script generating.

3.0.10

Updated package binaries because of changes in another included connector

3.0.6

Updated package binaries because of changes in another included connector.

3.0.5

Fix replacing input placeholders in connection string configuration.

3.0.4

Fixed processing complex input schema.

3.0.3

Fixed shared nuget package versions.

3.0.2

Fixed right processing of nullable properties.