public static string FormatCreateTableCommand(IDatabaseDetails details, string tableName, string autoIncrementName, ICollection <KeyValuePair <string, int> > columns)
{
var sql = new StringBuilder()
.Append("CREATE TABLE ")
.Append(details.QuoteName(tableName))
.Append(" (");
var colSpecs = new List <string>(1 + columns.Count);
if (!string.IsNullOrEmpty(autoIncrementName))
{
colSpecs
.Add($"{details.QuoteName(autoIncrementName)} {details.AutoIncrementSqlType}");
}
colSpecs
.AddRange(columns.Select(pair => details.QuoteName(pair.Key) + " "
+ details.GetSqlTypeFromRank(pair.Value)));
sql
.Append(string.Join(", ", colSpecs))
.Append(")");
var postfix = details.GetCreateTableStatementPostfix();
if (!string.IsNullOrEmpty(postfix))
{
sql.Append(" ").Append(postfix);
}
return(sql.ToString());
}
public static void FixLongToDoubleUpgrade(IDatabaseDetails details, IDatabaseAccess db, string tableName, IDictionary <string, int> oldColumns, IDictionary <string, int> changedColumns, int longRank, int doubleRank, int safeRank)
{
var names = new List <string>(changedColumns.Keys);
var quotedTableName = details.QuoteName(tableName);
foreach (var name in names)
{
var oldRank = oldColumns[name];
var newRank = changedColumns[name];
if (oldRank != longRank || newRank != doubleRank)
{
continue;
}
var quotedName = details.QuoteName(name);
var min = db.Cell <long>(false, "SELECT MIN(" + quotedName + ") FROM " + quotedTableName);
var max = db.Cell <long>(false, "SELECT MAX(" + quotedName + ") FROM " + quotedTableName);
if (!min.IsInt53Range() || !max.IsInt53Range())
{
changedColumns[name] = safeRank;
}
}
}
string FormatSelectQuery(string kind, string expr, bool countOnly = false)
{
var sql = "select " + (countOnly ? "count(*)" : "*") + " from " + _details.QuoteName(kind);
if (!String.IsNullOrEmpty(expr))
{
sql += " " + expr;
}
return(sql);
}
private string FormatSelectQuery(string kind, string expr, bool countOnly = false)
{
var sql = "SELECT " + (countOnly ? "COUNT(*)" : "*") + " FROM " + _details.QuoteName(kind);
if (!string.IsNullOrEmpty(expr))
{
sql += " " + expr;
}
return(sql);
}
public static string FormatInsertCommand(IDatabaseDetails details, string tableName, ICollection <string> fieldNames, string valuesPrefix = null, string defaultsExpr = "default values", string postfix = null)
{
var builder = new StringBuilder("INSERT INTO ")
.Append(details.QuoteName(tableName))
.Append(" ");
if (fieldNames.Count > 0)
{
builder
.Append("(")
.Append(string.Join(", ", fieldNames.Select(details.QuoteName)))
.Append(") ");
}
if (!string.IsNullOrEmpty(valuesPrefix))
{
builder.Append(valuesPrefix).Append(" ");
}
if (fieldNames.Count > 0)
{
builder.Append("values (");
for (var i = 0; i < fieldNames.Count; i++)
{
if (i > 0)
{
builder.Append(", ");
}
builder.Append("{").Append(i).Append("}");
}
builder.Append(")");
}
else
{
builder.Append(defaultsExpr);
}
if (!string.IsNullOrEmpty(postfix))
{
builder.Append(" ").Append(postfix);
}
return(builder.ToString());
}
string QuoteName(string name)
{
return(_details.QuoteName(name));
}
