autoupdate not working properly with indexes

[animesh32]

Steps to reproduce

i am using datasource autoupdate
my current model definition is -
{
"id": {
"id": true,
"name": "id",
"type": "number",
"generated": true
},
"age": {
"name": "age",
"type": "number",
"unique": true,
"postgresql": {
"dataType": "numeric",
"columnName": "age"
}
},
"name": {
"name": "name",
"type": "string",
"postgresql": {
"dataType": "varchar",
"columnName": "name"
}
},
"loanId": {
"name": "loanId",
"type": "number",
"postgresql": {
"dataType": "numeric",
"columnName": "loan_id"
}
}
}
i want to autoupdate it to -
{
"modelDefinition": [
{
"name": "name",
"type": "string",
"unique": false,
"required": false,
"id": false,
"default": ""
},
{
"name": "loan_id",
"type": "number",
"unique": false,
"required": false,
"id": false,
"default": ""
}
]
}

Current Behavior

After using DEBUG=loopback:connector* npm start command t
following sql queries were executed

1. loopback:connector:postgresql SQL: ALTER TABLE "ani"."test" ALTER COLUMN "name" TYPE VARCHAR USING "name"::VARCHAR +11ms
2. loopback:connector:postgresql SQL: ALTER TABLE "ani"."test" DROP COLUMN "age" +2ms
   (this command drops the column along with the unique index )
   but
3. loopback:connector:postgresql SQL: DROP INDEX "ani"."test_age_idx" +3ms
   loopback:connector:postgresql error: index "test_age_idx" does not exist
   loopback:connector:postgresql at Connection.parseE (/home/myPath/node_modules/pg/lib/connection.js:614:13)
   loopback:connector:postgresql at Connection.parseMessage (/home/myPath/node_modules/pg/lib/connection.js:413:19)
   loopback:connector:postgresql at Socket. (/home/myPath/node_modules/pg/lib/connection.js:129:22)
   loopback:connector:postgresql at Socket.emit (events.js:310:20)
   loopback:connector:postgresql at Socket.EventEmitter.emit (domain.js:482:12)
   loopback:connector:postgresql at addChunk (_stream_readable.js:286:12)
   loopback:connector:postgresql at readableAddChunk (_stream_readable.js:268:9)
   loopback:connector:postgresql at Socket.Readable.push (_stream_readable.js:209:10)
   loopback:connector:postgresql at TCP.onStreamRead (internal/stream_base_commons.js:186:23) +1ms
   this query tries to drop index which has been dropped already

Expected Behavior

expected drop index query not to execute as drop column already does that

Link to reproduction sandbox

it's based on working of datasource autoupdate or maybe i am making my model definition wrong

Additional information

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