internal static string CreateDatabaseExistsScript(string databaseName, bool useDeprecatedSystemTable)
{
var builder = new SqlDdlBuilder();
builder.AppendSql("SELECT Count(*) FROM ");
AppendSysDatabases(builder, useDeprecatedSystemTable);
builder.AppendSql(" WHERE [name]=");
builder.AppendStringLiteral(databaseName);
return(builder.unencodedStringBuilder.ToString());
}
private static void AppendSysDatabases(SqlDdlBuilder builder, bool useDeprecatedSystemTable)
{
if (useDeprecatedSystemTable)
{
builder.AppendSql("sysdatabases");
}
else
{
builder.AppendSql("sys.databases");
}
}
internal static string CreateDatabaseScript(string databaseName, string dataFileName, string logFileName)
{
var builder = new SqlDdlBuilder();
builder.AppendSql("create database ");
builder.AppendIdentifier(databaseName);
if (null != dataFileName)
{
Debug.Assert(logFileName != null, "must specify log file with data file");
builder.AppendSql(" on primary ");
builder.AppendFileName(dataFileName);
builder.AppendSql(" log on ");
builder.AppendFileName(logFileName);
}
return(builder.unencodedStringBuilder.ToString());
}
internal static string DropDatabaseScript(string databaseName)
{
var builder = new SqlDdlBuilder();
builder.AppendSql("drop database ");
builder.AppendIdentifier(databaseName);
return(builder.unencodedStringBuilder.ToString());
}
internal static string CreateCountDatabasesBasedOnFileNameScript(string databaseFileName, bool useDeprecatedSystemTable)
{
var builder = new SqlDdlBuilder();
builder.AppendSql("SELECT Count(*) FROM ");
if (useDeprecatedSystemTable)
{
builder.AppendSql("sysdatabases");
}
if (!useDeprecatedSystemTable)
{
builder.AppendSql("sys.master_files");
}
builder.AppendSql(" WHERE [");
if (useDeprecatedSystemTable)
{
builder.AppendSql("filename");
}
else
{
builder.AppendSql("physical_name");
}
builder.AppendSql("]=");
builder.AppendStringLiteral(databaseFileName);
return(builder.unencodedStringBuilder.ToString());
}
private void AppendCreateSchema(string schema)
{
AppendSql("if (schema_id(");
AppendStringLiteral(schema);
AppendSql(") is null) exec(");
// need to create a sub-command and escape it as a string literal as well...
SqlDdlBuilder schemaBuilder = new SqlDdlBuilder();
schemaBuilder.AppendSql("create schema ");
schemaBuilder.AppendIdentifier(schema);
AppendStringLiteral(schemaBuilder.unencodedStringBuilder.ToString());
AppendSql(");");
AppendNewLine();
}
internal static string CreateGetDatabaseNamesBasedOnFileNameScript(string databaseFileName, bool useDeprecatedSystemTable)
{
var builder = new SqlDdlBuilder();
builder.AppendSql("SELECT [d].[name] FROM ");
AppendSysDatabases(builder, useDeprecatedSystemTable);
builder.AppendSql(" AS [d] ");
if (!useDeprecatedSystemTable)
{
builder.AppendSql("INNER JOIN sys.master_files AS [f] ON [f].[database_id] = [d].[database_id]");
}
builder.AppendSql(" WHERE [");
if (useDeprecatedSystemTable)
{
builder.AppendSql("filename");
}
else
{
builder.AppendSql("f].[physical_name");
}
builder.AppendSql("]=");
builder.AppendStringLiteral(databaseFileName);
return(builder.unencodedStringBuilder.ToString());
}
