how to use SqlAzureDacpacDeployment#1 task result in the next task - azure-sql-database

Question

i need to query database in an azure pipeline to find out when was the last login to an environment and if it is more than 2 weeks destroy the environment. to do that i used the below task. but i dont know how can i store the variable to use in the next task. can someone please help me?
- task: SqlAzureDacpacDeployment#1
inputs:
azureSubscription: ' A Service Connection'
AuthenticationType: 'servicePrincipal'
ServerName: 'myserver.database.windows.net'
DatabaseName: 'mydb'
deployType: 'InlineSqlTask'
SqlInline: |
DECLARE #LastLoginDate AS NVARCHAR(50)
SELECT #LastLoginDate = [LastLoginDate]
FROM [dbo].[AspNetUsers]
WHERE UserName <> 'system'
PRINT #LAstLoginDate
IpDetectionMethod: 'AutoDetect'

Answer 1

SQLInlineTask meant for execution of SQL Script on database.
Setting Variables in Pipeline Tasks available with either Bash or PowerShell.
PowerShell Script Task
$query = "DECLARE #LastLoginDate AS NVARCHAR(50)
SELECT #LastLoginDate = [LastLoginDate]
FROM [dbo].[AspNetUsers]
WHERE UserName <> 'system'
PRINT #LAstLoginDate"
# If ARM Connection used with service connection, ignore getting access token
$clientid = "<client id>" # Store in Variable Groups
$tenantid = "<tenant id>" # Store in Variable Groups
$secret = "<client secret>" # Store in Variable Groups
$request = Invoke-RestMethod -Method POST -Uri "https://login.microsoftonline.com/$tenantid/oauth2/token"
-Body #{ resource="https://database.windows.net/"; grant_type="client_credentials"; client_id=$clientid; client_secret=$secret }
-ContentType "application/x-www-form-urlencoded"
$access_token = $request.access_token
# If ARM connection used with service connection, ignore AccessToken Parameter
$sqlOutput = Invoke-Sqlcmd -ServerInstance $.database.windows.net -Database db$ -AccessToken $access_token -query $query
Write-Host "##vso[task.setvariable variable=<variable name>;]$sqlOutput"
Bash
echo "##vso[task.setvariable variable=<variable name>;isOutput=true]<variable value>"
Within same job and different tasks, access it using $(<variable name>)
In Different job, access it using $[ dependencies.<firstjob name>.outputs['mystep.<variable name>'] ]
References:
https://learn.microsoft.com/en-us/azure/devops/pipelines/process/set-variables-scripts?view=azure-devops&tabs=bash
https://medium.com/microsoftazure/how-to-pass-variables-in-azure-pipelines-yaml-tasks-5c81c5d31763

Answer 2

- task: PowerShell#2
inputs:
targetType: 'inline'
script: |
$LoginDate=(Sqlcmd myserver -U $(Username) -P $(Password) -d mydatabase -q "SET NOCOUNT ON; SELECT LastLoginDate=min(LastLoginDate) FROM mytable WHERE UserName<>'system';")
$Last=$LoginDate[2].trimstart()
Write-host $Last
Write-host "##vso[task.setvariable variable=LastLoginDate]$Last"