database-migration

I want to migrate data from one database to another database in Microsoft SQL Server 2005. I need to verify those rows retrieved before I insert them to the destination database's tables. Which approach is reasonable for this kind of things? I am trying to use two datasets in my VB.NET program. Is it reasonable? Can you suggest me? Thanks in advance, RedsDevils It depends on how much data you're talking about, but I'd tend to pass on .Net datasets for a migration task, as that means pulling all the data into memory. If you must do this via a .Net client program, at least use a DataReader

So I'm currently transcribing OracleSQL into a new PostgreSQL database. While I'm translating Oracle's (+) joins to LEFT OUTER JOIN s, this works very well. Except when combined with old style joins. Take this OracleSQL for example: SELECT * FROM table1, table2 alias1, table2 alias2, table2 alias3, table3, table4, table5, table6 table6alias WHERE table1.id_table3 = alias1.id_table3 AND table1.id_table4 = alias2.id_table4 AND table1.id_table3 = table3.id_table3 AND table1.id_table4 = table4.id_table4 AND table1.id_table5 = table5.id_table5 AND table1.table1_id_table3_sender = alias3.id_table3 (

I converted native lportal DB from Hypersonic to PostgreSQL. Added portal-ext.properties files with my PostgreSQL configurations and added postgresql-42.1.1 to D:\files\liferay-ce-portal-7.0-ga3\tomcat-8.0.32\lib\ext # PostgreSQL # jdbc.default.driverClassName=org.postgresql.Driver jdbc.default.url=jdbc:postgresql://localhost:5432/test jdbc.default.username=postgres jdbc.default.password=root And when I'm starting my liferay it shows me an Exception. But If I remove portal-ext.properties it will work fine! What the problem?? 08:36:35,748 ERROR [Framework Event Dispatcher: Equinox Container:

I've used Entity Framework 6.x and I've produced my database by code-first approach. After creating db, I've decided to some changes in my db. for example I want to determine a range of value for Size property in my model. my model: public class Tag : Entity, ITag { /// <summary> /// Size can be 1, 2, 3 or 4 /// </summary> [Range(1, 4)] public virtual int Size { get; set; } [Required] [StringLength(25)] public virtual string Title { get; set; } [StringLength(256)] public virtual string Description { get; set; } public virtual bool IsActive { get; set; } public virtual ISet<ArticleTag>

I am trying to move my PostgreSQL database with all the data inside it to a MySQL database so I am using MySQL Workbench > Data migration tool. On the "Reverse Engineer Source" step I got a strange error: ERROR: Reverse engineer selected schemata: ProgrammingError("('42P01', '[42P01] ERROR: relation "public.psqlcfg_lid_seq" does not exist;\nError while executing the query (7) (SQLExecDirectW)')"): error calling Python module function DbPostgresqlRE.reverseEngineer Failed The complete error log where this error message appears at its end is: Starting... Connect to source DBMS... - Connecting...

I've been trying to migrate my app to Room . I'm struggling with a particular table that can't be migrated directly because of the way it has been created. The fields were created with datatype BOOL and BYTE instead of INTEGER . I've already failed trying: Change my entity fields to Int/Boolean/Byte with the same error Creating a TypeConverter to save it as Boolean/Byte Adding typeAffinity as UNDEFINED in @ColumnInfo of my entity that is affinity = 1 My databaseSQL creation sentence: CREATE TABLE IF NOT EXISTS myTable (_id INTEGER PRIMARY KEY AUTOINCREMENT, my_first_field BOOL NOT NULL DEFAULT

ProductTable public function up() { Schema::create('product', function (Blueprint $table) { $table->increments('id'); $table->string('name'); $table->string('description'); $table->string('type'); $table->integer('size'); $table->integer('price'); $table->string('image')->nullable(); $table->timestamps(); }); } When I hit submit, I got error saying base table not found Laravel can not find the prular form of the table name that you used, just specify your table name on your model like so; And check your view aswell make sure on your resource/view you have a file named successs.blade.php public

I have a database that is going to experience the integer exhaustion problem that Basecamp famously faced back in November. I have several months to figure out what to do. Is there a no-downtime-required, proactive solution to migrating this column type? If so what is it? If not, is it just a matter of eating the downtime and migrating the column when I can? Is this article sufficient , assuming I have several days/weeks to perform the migration now before I'm forced to do it when I run out of ids? Laurenz Albe Use logical replication . With logical replication you can have different data

I am using Entity Framework with Auto Migrations. So when I add a new model to my Context, my database is updated and new table is created. What I want to do is the opposite, droping the table completely from database. However, removing the definition from Context class does not work. public class CompanyContext : DbContext { public DbSet<Permission> Permissions { get; set; } public DbSet<Company> Companies { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { base.OnModelCreating(modelBuilder); } } For instance, I want to remove Company table from database. To