How to create multiple tables in SQLITE for ionic angular

Ionic Framework
1

I’m currently trying to make multiple tables in SQLITE in my ionic project, but it appears that this format is not working; does anyone have any ideas on how to create multiple tables in SQLITE in an ionic project? thank you very much

 databaseConn() {
        this.platform.ready().then(() => {
          this.sqlite.create({
              name: this.db_name,
              location: 'default'
            }).then((sqLite: SQLiteObject) => {
              this.dbInstance = sqLite;
              this.createTable(
                `CREATE TABLE IF NOT EXISTS ${this.db_table} (
                   product_id INTEGER PRIMARY KEY,  
                  product_name varchar(255),
                  product_price varchar(255)
                )`
            );

            this.createTable(
                `CREATE TABLE IF NOT EXISTS ${this.db_table2} (
                  customer_id INTEGER PRIMARY KEY,  
                  customer_name varchar(255)
                )`
            );
        })
            .catch((error) => alert(JSON.stringify(error)));
    });
}
createTable(tableStr: string): void {
  this.dbInstance.executeSql(`${tableStr}`, []).then((res) => {
      console.log('table was created')
  })
  .catch(e => {
      alert("error " + JSON.stringify(e))
  })
}