Convert inline query to a query in TypeORM - sql

Question

I need to convert this SQL query:
DECLARE #user AS dsschema.user_tools;
INSERT INTO #user VALUES('`+ body.user_id+`','`+ body.tool_id+`');
EXECUTE dsschema.sp_user_tool #user
To a TypeORM createQueryBuilder();
Can someone please help me?
I tried the following but facing issues like:
Must declare the scalar variable #user:
Service.ts
class UserTools{
constructor(#InjectRepository(User) private userRepo: Repository:<User>)
async insertUserData(body){
try {
const result = await this.manager.query(`DECLARE #user AS dsschema.user_tools`);
const querybuilderResult = await this.userRepo.createQueryBuilder()
.insert().into(#user).values({user_id: body.user_id, tool_id: body.tool_id});
const spResult = await this.manager.query(`dsschema.sp_user_tool #user`);
return spResult;
} catch
{
throw error;
}
}
}
user.entity.ts
import {Entity, PrimaryGeneratedColumn, Column} from "typeorm";
#Entity()
export class User {
#PrimaryGeneratedColumn()
user_id: string;
#Column()
tool_id: string;
}

Answer 1

First of all, #PrimaryGeneratedColumn() by default uses auto incrementing integers, meaning in your case user_id would be of type number, not string. You can find more information on the decorator in the TypeORM Docs:
#PrimaryGeneratedColumn() creates a primary column which value will be automatically generated with an auto-increment value. It will create int column with auto-increment/serial/sequence/identity (depend on the database and configuration provided).
Apart from that:
In your attempt you're executing the 3 instructions individually, meaning that the #user context is no longer available when you run your insert statement.
The table name is quoted by TypeORM, meaning it will try to insert to "#user" instead of #user. SQL server will reject this with Invalid object name '#user'.
Here's how you could do it:
// This is the variable where the
// user_tools table will be stored
const userVariable = '#user';
// getQueryAndParameters() returns an array with
// two items, the query and the parameters.
//
// In this case:
// [
// 'INSERT INTO "#user"("user_id", "tool_id") VALUES (#0, #1)',
// [ 123, 'abc' ]
// ]
//
const insertStatement = this.userRepo
.createQueryBuilder()
.insert()
.into(userVariable)
.values({
user_id: 123,
tool_id: 'abc',
})
.getQueryAndParameters();
// Here we execute the statements in the same batch
// to address [1]
// For [2] we have to unescape your variable
// name #user (which is currently the quoted "#user")
await this.userRepo.query(
`
DECLARE ${userVariable} AS dsschema.user_tools;
${insertStatement[0].replace(`"${userVariable}"`, userVariable)};
EXECUTE dsschema.sp_user_tool ${userVariable};
`,
insertStatement[1]
);