internal static SqlPreCommand CopyData(ITable newTable, DiffTable oldTable, Replacements rep)
{
var selectColumns = newTable.Columns
.Select(col => oldTable.Columns.TryGetC(col.Key)?.Name ?? GetDefaultValue(newTable, col.Value, rep))
.ToString(", ");
var insertSelect = new SqlPreCommandSimple(
$@"INSERT INTO {newTable.Name} ({newTable.Columns.Values.ToString(a => a.Name, ", ")})
SELECT {selectColumns}
FROM {oldTable.Name}");
if (!newTable.PrimaryKey.Identity)
{
return(insertSelect);
}
return(SqlPreCommand.Combine(Spacing.Simple,
SqlBuilder.SetIdentityInsert(newTable.Name, true),
insertSelect,
SqlBuilder.SetIdentityInsert(newTable.Name, false)
));
}
public static SqlPreCommand CreateIndex(Index index, Replacements checkUnique)
{
if (index is PrimaryClusteredIndex)
{
var columns = index.Columns.ToString(c => c.Name.SqlEscape(), ", ");
return(new SqlPreCommandSimple($"ALTER TABLE {index.Table.Name} ADD CONSTRAINT {index.IndexName} PRIMARY KEY CLUSTERED({columns})"));
}
if (index is UniqueIndex uIndex)
{
if (uIndex.ViewName != null)
{
ObjectName viewName = new ObjectName(uIndex.Table.Name.Schema, uIndex.ViewName);
var columns = index.Columns.ToString(c => c.Name.SqlEscape(), ", ");
SqlPreCommandSimple viewSql = new SqlPreCommandSimple($"CREATE VIEW {viewName} WITH SCHEMABINDING AS SELECT {columns} FROM {uIndex.Table.Name.ToString()} WHERE {uIndex.Where}")
{
GoBefore = true, GoAfter = true
};
SqlPreCommandSimple indexSql = new SqlPreCommandSimple($"CREATE UNIQUE CLUSTERED INDEX {uIndex.IndexName} ON {viewName}({columns})");
return(SqlPreCommand.Combine(Spacing.Simple, checkUnique != null ? RemoveDuplicatesIfNecessary(uIndex, checkUnique) : null, viewSql, indexSql));
}
else
{
return(SqlPreCommand.Combine(Spacing.Double,
checkUnique != null ? RemoveDuplicatesIfNecessary(uIndex, checkUnique) : null,
CreateIndexBasic(index, false)));
}
}
else
{
return(CreateIndexBasic(index, forHistoryTable: false));
}
}
public static string GetDefaultValue(ITable table, IColumn column, Replacements rep)
{
string defaultValue = rep.Interactive ? SafeConsole.AskString("Default value for '{0}.{1}'? (or press enter) ".FormatWith(table.Name.Name, column.Name), stringValidator: str => null) : "";
if (defaultValue == "force")
{
return(defaultValue);
}
if (defaultValue.HasText() && SqlBuilder.IsString(column.SqlDbType) && !defaultValue.Contains("'"))
{
defaultValue = "'" + defaultValue + "'";
}
if (string.IsNullOrEmpty(defaultValue))
{
defaultValue = SqlBuilder.IsNumber(column.SqlDbType) ? "0" :
SqlBuilder.IsString(column.SqlDbType) ? "''" :
SqlBuilder.IsDate(column.SqlDbType) ? "GetDate()" :
"?";
}
return(defaultValue);
}
public static List <T> TryRetrieveAll <T>(Replacements replacements)
where T : Entity
{
return(TryRetrieveAll(typeof(T), replacements).Cast <T>().ToList());
}
static SqlPreCommand SynchronizeEnumsScript(Replacements replacements)
{
Schema schema = Schema.Current;
List <SqlPreCommand> commands = new List <SqlPreCommand>();
foreach (var table in schema.Tables.Values)
{
Type enumType = EnumEntity.Extract(table.Type);
if (enumType != null)
{
IEnumerable <Entity> should = EnumEntity.GetEntities(enumType);
Dictionary <string, Entity> shouldByName = should.ToDictionary(a => a.ToString());
List <Entity> current = Administrator.TryRetrieveAll(table.Type, replacements);
Dictionary <string, Entity> currentByName = current.ToDictionaryEx(a => a.toStr, table.Name.Name);
string key = Replacements.KeyEnumsForTable(table.Name.Name);
replacements.AskForReplacements(currentByName.Keys.ToHashSet(), shouldByName.Keys.ToHashSet(), key);
currentByName = replacements.ApplyReplacementsToOld(currentByName, key);
var mix = shouldByName.JoinDictionary(currentByName, (n, s, c) => new { s, c }).Where(a => a.Value.s.id != a.Value.c.id).ToDictionary();
HashSet <PrimaryKey> usedIds = current.Select(a => a.Id).ToHashSet();
Dictionary <string, Entity> middleByName = mix.Where(kvp => usedIds.Contains(kvp.Value.s.Id)).ToDictionary(kvp => kvp.Key, kvp => Clone(kvp.Value.c));
if (middleByName.Any())
{
var moveToAux = SyncEnums(schema, table,
currentByName.Where(a => middleByName.ContainsKey(a.Key)).ToDictionary(),
middleByName);
if (moveToAux != null)
{
commands.Add(moveToAux);
}
}
var com = SyncEnums(schema, table,
currentByName.Where(a => !middleByName.ContainsKey(a.Key)).ToDictionary(),
shouldByName.Where(a => !middleByName.ContainsKey(a.Key)).ToDictionary());
if (com != null)
{
commands.Add(com);
}
if (middleByName.Any())
{
var backFromAux = SyncEnums(schema, table,
middleByName,
shouldByName.Where(a => middleByName.ContainsKey(a.Key)).ToDictionary());
if (backFromAux != null)
{
commands.Add(backFromAux);
}
}
}
}
return(SqlPreCommand.Combine(Spacing.Double, commands.ToArray()));
}
private static SqlPreCommand AlterTableAddColumnDefault(ITable table, IColumn column, Replacements rep)
{
bool temporalDefault = !column.Nullable && !column.Identity && column.Default == null;
if (!temporalDefault)
{
return(SqlBuilder.AlterTableAddColumn(table, column));
}
string defaultValue = rep.Interactive ? SafeConsole.AskString("Default value for '{0}.{1}'? (or press enter) ".FormatWith(table.Name.Name, column.Name), stringValidator: str => null) : "";
if (defaultValue == "null")
{
return(SqlBuilder.AlterTableAddColumn(table, column));
}
try
{
column.Default = defaultValue;
if (column.Default.HasText() && SqlBuilder.IsString(column.SqlDbType) && !column.Default.Contains("'"))
{
column.Default = "'" + column.Default + "'";
}
if (string.IsNullOrEmpty(column.Default))
{
column.Default = SqlBuilder.IsNumber(column.SqlDbType) ? "0" :
SqlBuilder.IsString(column.SqlDbType) ? "''" :
SqlBuilder.IsDate(column.SqlDbType) ? "GetDate()" :
"?";
}
return(SqlPreCommand.Combine(Spacing.Simple,
SqlBuilder.AlterTableAddColumn(table, column),
SqlBuilder.DropDefaultConstraint(table.Name, column.Name)));
}
finally
{
column.Default = null;
}
}
public static SqlPreCommand SynchronizeTablesScript(Replacements replacements)
{
Dictionary <string, ITable> model = Schema.Current.GetDatabaseTables().ToDictionaryEx(a => a.Name.ToString(), "schema tables");
HashSet <SchemaName> modelSchemas = Schema.Current.GetDatabaseTables().Select(a => a.Name.Schema).Where(a => !SqlBuilder.SystemSchemas.Contains(a.Name)).ToHashSet();
Dictionary <string, DiffTable> database = DefaultGetDatabaseDescription(Schema.Current.DatabaseNames());
HashSet <SchemaName> databaseSchemas = DefaultGetSchemas(Schema.Current.DatabaseNames());
if (SimplifyDiffTables != null)
{
SimplifyDiffTables(database);
}
replacements.AskForReplacements(database.Keys.ToHashSet(), model.Keys.ToHashSet(), Replacements.KeyTables);
database = replacements.ApplyReplacementsToOld(database, Replacements.KeyTables);
Dictionary <ITable, Dictionary <string, Index> > modelIndices = model.Values
.ToDictionary(t => t, t => t.GeneratAllIndexes().ToDictionaryEx(a => a.IndexName, "Indexes for {0}".FormatWith(t.Name)));
model.JoinDictionaryForeach(database, (tn, tab, diff) =>
{
var key = Replacements.KeyColumnsForTable(tn);
replacements.AskForReplacements(diff.Columns.Keys.ToHashSet(), tab.Columns.Keys.ToHashSet(), key);
diff.Columns = replacements.ApplyReplacementsToOld(diff.Columns, key);
diff.Indices = ApplyIndexAutoReplacements(diff, tab, modelIndices[tab]);
});
Func <ObjectName, ObjectName> ChangeName = (ObjectName objectName) =>
{
string name = replacements.Apply(Replacements.KeyTables, objectName.ToString());
return(model.TryGetC(name)?.Name ?? objectName);
};
Func <ObjectName, SqlPreCommand> DeleteAllForeignKey = tableName =>
{
var dropFks = (from t in database.Values
from c in t.Columns.Values
where c.ForeignKey != null && c.ForeignKey.TargetTable.Equals(tableName)
select SqlBuilder.AlterTableDropConstraint(t.Name, c.ForeignKey.Name)).Combine(Spacing.Simple);
if (dropFks == null)
{
return(null);
}
return(SqlPreCommand.Combine(Spacing.Simple, new SqlPreCommandSimple("---In order to remove the PK of " + tableName.Name), dropFks));
};
using (replacements.WithReplacedDatabaseName())
{
SqlPreCommand createSchemas = Synchronizer.SynchronizeScriptReplacing(replacements, "Schemas",
modelSchemas.ToDictionary(a => a.ToString()),
databaseSchemas.ToDictionary(a => a.ToString()),
(_, newSN) => SqlBuilder.CreateSchema(newSN),
null,
(_, newSN, oldSN) => newSN.Equals(oldSN) ? null : SqlBuilder.CreateSchema(newSN),
Spacing.Double);
//use database without replacements to just remove indexes
SqlPreCommand dropStatistics =
Synchronizer.SynchronizeScript(model, database,
null,
(tn, dif) => SqlBuilder.DropStatistics(tn, dif.Stats),
(tn, tab, dif) =>
{
var removedColums = dif.Columns.Keys.Except(tab.Columns.Keys).ToHashSet();
return(SqlBuilder.DropStatistics(tn, dif.Stats.Where(a => a.Columns.Any(removedColums.Contains)).ToList()));
},
Spacing.Double);
SqlPreCommand dropIndices =
Synchronizer.SynchronizeScript(model, database,
null,
(tn, dif) => dif.Indices.Values.Where(ix => !ix.IsPrimary).Select(ix => SqlBuilder.DropIndex(dif.Name, ix)).Combine(Spacing.Simple),
(tn, tab, dif) =>
{
Dictionary <string, Index> modelIxs = modelIndices[tab];
var removedColums = dif.Columns.Keys.Except(tab.Columns.Keys).ToHashSet();
var changes = Synchronizer.SynchronizeScript(modelIxs, dif.Indices,
null,
(i, dix) => dix.Columns.Any(removedColums.Contains) || dix.IsControlledIndex ? SqlBuilder.DropIndex(dif.Name, dix) : null,
(i, mix, dix) => !dix.IndexEquals(dif, mix) ? SqlPreCommand.Combine(Spacing.Double, dix.IsPrimary ? DeleteAllForeignKey(dif.Name) : null, SqlBuilder.DropIndex(dif.Name, dix)) : null,
Spacing.Simple);
return(changes);
},
Spacing.Double);
SqlPreCommand dropForeignKeys = Synchronizer.SynchronizeScript(
model,
database,
null,
(tn, dif) => dif.Columns.Values.Select(c => c.ForeignKey != null ? SqlBuilder.AlterTableDropConstraint(dif.Name, c.ForeignKey.Name) : null)
.Concat(dif.MultiForeignKeys.Select(fk => SqlBuilder.AlterTableDropConstraint(dif.Name, fk.Name))).Combine(Spacing.Simple),
(tn, tab, dif) => SqlPreCommand.Combine(Spacing.Simple,
Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
null,
(cn, colDb) => colDb.ForeignKey != null ? SqlBuilder.AlterTableDropConstraint(dif.Name, colDb.ForeignKey.Name) : null,
(cn, colModel, colDb) => colDb.ForeignKey == null ? null :
colModel.ReferenceTable == null || colModel.AvoidForeignKey || !colModel.ReferenceTable.Name.Equals(ChangeName(colDb.ForeignKey.TargetTable)) ?
SqlBuilder.AlterTableDropConstraint(dif.Name, colDb.ForeignKey.Name) :
null, Spacing.Simple),
dif.MultiForeignKeys.Select(fk => SqlBuilder.AlterTableDropConstraint(dif.Name, fk.Name)).Combine(Spacing.Simple)),
Spacing.Double);
SqlPreCommand tables =
Synchronizer.SynchronizeScript(
model,
database,
(tn, tab) => SqlBuilder.CreateTableSql(tab),
(tn, dif) => SqlBuilder.DropTable(dif.Name),
(tn, tab, dif) =>
SqlPreCommand.Combine(Spacing.Simple,
!object.Equals(dif.Name, tab.Name) ? SqlBuilder.RenameOrMove(dif, tab) : null,
Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
(cn, tabCol) => SqlPreCommandSimple.Combine(Spacing.Simple,
tabCol.PrimaryKey && dif.PrimaryKeyName != null ? SqlBuilder.DropPrimaryKeyConstraint(tab.Name) : null,
AlterTableAddColumnDefault(tab, tabCol, replacements)),
(cn, difCol) => SqlPreCommandSimple.Combine(Spacing.Simple,
difCol.Default != null ? SqlBuilder.DropDefaultConstraint(tab.Name, difCol.Name) : null,
SqlBuilder.AlterTableDropColumn(tab, cn)),
(cn, tabCol, difCol) => SqlPreCommand.Combine(Spacing.Simple,
difCol.Name == tabCol.Name ? null : SqlBuilder.RenameColumn(tab, difCol.Name, tabCol.Name),
difCol.ColumnEquals(tabCol, ignorePrimaryKey: true) ? null : SqlPreCommand.Combine(Spacing.Simple,
tabCol.PrimaryKey && !difCol.PrimaryKey && dif.PrimaryKeyName != null ? SqlBuilder.DropPrimaryKeyConstraint(tab.Name) : null,
SqlBuilder.AlterTableAlterColumn(tab, tabCol),
tabCol.SqlDbType == SqlDbType.NVarChar && difCol.SqlDbType == SqlDbType.NChar ? SqlBuilder.UpdateTrim(tab, tabCol) : null),
difCol.DefaultEquals(tabCol) ? null : SqlPreCommand.Combine(Spacing.Simple,
difCol.Default != null ? SqlBuilder.DropDefaultConstraint(tab.Name, tabCol.Name) : null,
tabCol.Default != null ? SqlBuilder.AddDefaultConstraint(tab.Name, tabCol.Name, tabCol.Default) : null),
UpdateByFkChange(tn, difCol, tabCol, ChangeName)),
Spacing.Simple)),
Spacing.Double);
if (tables != null)
{
tables.GoAfter = true;
}
var tableReplacements = replacements.TryGetC(Replacements.KeyTables);
if (tableReplacements != null)
{
replacements[Replacements.KeyTablesInverse] = tableReplacements.Inverse();
}
SqlPreCommand syncEnums;
try
{
syncEnums = SynchronizeEnumsScript(replacements);
}
catch (Exception e)
{
syncEnums = new SqlPreCommandSimple("-- Exception synchronizing enums: " + e.Message);
}
SqlPreCommand addForeingKeys = Synchronizer.SynchronizeScript(
model,
database,
(tn, tab) => SqlBuilder.AlterTableForeignKeys(tab),
null,
(tn, tab, dif) => Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
(cn, colModel) => colModel.ReferenceTable == null || colModel.AvoidForeignKey ? null :
SqlBuilder.AlterTableAddConstraintForeignKey(tab, colModel.Name, colModel.ReferenceTable),
null,
(cn, colModel, coldb) =>
{
if (colModel.ReferenceTable == null || colModel.AvoidForeignKey)
{
return(null);
}
if (coldb.ForeignKey == null || !colModel.ReferenceTable.Name.Equals(ChangeName(coldb.ForeignKey.TargetTable)))
{
return(SqlBuilder.AlterTableAddConstraintForeignKey(tab, colModel.Name, colModel.ReferenceTable));
}
var name = SqlBuilder.ForeignKeyName(tab.Name.Name, colModel.Name);
return(SqlPreCommand.Combine(Spacing.Simple,
name != coldb.ForeignKey.Name.Name ? SqlBuilder.RenameForeignKey(coldb.ForeignKey.Name, name) : null,
(coldb.ForeignKey.IsDisabled || coldb.ForeignKey.IsNotTrusted) && !replacements.SchemaOnly ? SqlBuilder.EnableForeignKey(tab.Name, name) : null));
},
Spacing.Simple),
Spacing.Double);
bool?createMissingFreeIndexes = null;
SqlPreCommand addIndices =
Synchronizer.SynchronizeScript(model, database,
(tn, tab) => modelIndices[tab].Values.Where(a => !(a is PrimaryClusteredIndex)).Select(SqlBuilder.CreateIndex).Combine(Spacing.Simple),
null,
(tn, tab, dif) =>
{
var columnReplacements = replacements.TryGetC(Replacements.KeyColumnsForTable(tn));
Func <IColumn, bool> isNew = c => !dif.Columns.ContainsKey(columnReplacements?.TryGetC(c.Name) ?? c.Name);
Dictionary <string, Index> modelIxs = modelIndices[tab];
var controlledIndexes = Synchronizer.SynchronizeScript(modelIxs, dif.Indices,
(i, mix) => mix is UniqueIndex || mix.Columns.Any(isNew) || SafeConsole.Ask(ref createMissingFreeIndexes, "Create missing non-unique index {0} in {1}?".FormatWith(mix.IndexName, tab.Name)) ? SqlBuilder.CreateIndex(mix) : null,
null,
(i, mix, dix) => !dix.IndexEquals(dif, mix) ? SqlBuilder.CreateIndex(mix) :
mix.IndexName != dix.IndexName ? SqlBuilder.RenameIndex(tab, dix.IndexName, mix.IndexName) : null,
Spacing.Simple);
return(SqlPreCommand.Combine(Spacing.Simple, controlledIndexes));
}, Spacing.Double);
SqlPreCommand dropSchemas = Synchronizer.SynchronizeScriptReplacing(replacements, "Schemas",
modelSchemas.ToDictionary(a => a.ToString()),
databaseSchemas.ToDictionary(a => a.ToString()),
null,
(_, oldSN) => DropSchema(oldSN) ? SqlBuilder.DropSchema(oldSN) : null,
(_, newSN, oldSN) => newSN.Equals(oldSN) ? null : SqlBuilder.DropSchema(oldSN),
Spacing.Double);
return(SqlPreCommand.Combine(Spacing.Triple, createSchemas, dropStatistics, dropIndices, dropForeignKeys, tables, syncEnums, addForeingKeys, addIndices, dropSchemas));
}
}
public static SqlPreCommand?RemoveDuplicatesIfNecessary(UniqueIndex uniqueIndex, Replacements rep)
{
try
{
var primaryKey = uniqueIndex.Table.Columns.Values.Where(a => a.PrimaryKey).Only();
if (primaryKey == null)
{
return(null);
}
int count = DuplicateCount(uniqueIndex, rep);
if (count == 0)
{
return(null);
}
var columns = uniqueIndex.Columns.ToString(c => c.Name.SqlEscape(), ", ");
if (rep.Interactive)
{
if (SafeConsole.Ask($"There are {count} rows in {uniqueIndex.Table.Name} with the same {columns}. Generate DELETE duplicates script?"))
{
return(RemoveDuplicates(uniqueIndex, primaryKey, columns, commentedOut: false));
}
return(null);
}
else
{
return(RemoveDuplicates(uniqueIndex, primaryKey, columns, commentedOut: true));
}
}
catch (Exception)
{
return(new SqlPreCommandSimple($"-- Impossible to determine duplicates in new index {uniqueIndex.IndexName}"));
}
}
private static SqlPreCommand AlterTableAddColumnDefault(ITable table, IColumn column, Replacements rep)
{
bool temporalDefault = !column.Nullable && !column.Identity && column.Default == null;
if (!temporalDefault)
{
return(SqlBuilder.AlterTableAddColumn(table, column));
}
try
{
var defaultValue = GetDefaultValue(table, column, rep);
if (defaultValue == "force")
{
return(SqlBuilder.AlterTableAddColumn(table, column));
}
column.Default = defaultValue;
return(SqlPreCommand.Combine(Spacing.Simple,
SqlBuilder.AlterTableAddColumn(table, column),
SqlBuilder.DropDefaultConstraint(table.Name, column.Name)));
}
finally
{
column.Default = null;
}
}
public static SqlPreCommand SynchronizeTablesScript(Replacements replacements)
{
Schema s = Schema.Current;
Dictionary <string, ITable> model = s.GetDatabaseTables().Where(t => !s.IsExternalDatabase(t.Name.Schema.Database)).ToDictionaryEx(a => a.Name.ToString(), "schema tables");
HashSet <SchemaName> modelSchemas = model.Values.Select(a => a.Name.Schema).Where(a => !SqlBuilder.SystemSchemas.Contains(a.Name)).ToHashSet();
Dictionary <string, DiffTable> database = DefaultGetDatabaseDescription(s.DatabaseNames());
HashSet <SchemaName> databaseSchemas = DefaultGetSchemas(s.DatabaseNames());
SimplifyDiffTables?.Invoke(database);
replacements.AskForReplacements(database.Keys.ToHashSet(), model.Keys.ToHashSet(), Replacements.KeyTables);
database = replacements.ApplyReplacementsToOld(database, Replacements.KeyTables);
Dictionary <ITable, Dictionary <string, Index> > modelIndices = model.Values
.ToDictionary(t => t, t => t.GeneratAllIndexes().ToDictionaryEx(a => a.IndexName, "Indexes for {0}".FormatWith(t.Name)));
//To --> From
Dictionary <ObjectName, ObjectName> copyDataFrom = new Dictionary <ObjectName, ObjectName>();
//A -> A_temp
Dictionary <ObjectName, ObjectName> preRenames = new Dictionary <ObjectName, ObjectName>();
model.JoinDictionaryForeach(database, (tn, tab, diff) =>
{
var key = Replacements.KeyColumnsForTable(tn);
replacements.AskForReplacements(diff.Columns.Keys.ToHashSet(), tab.Columns.Keys.ToHashSet(), key);
diff.Columns = replacements.ApplyReplacementsToOld(diff.Columns, key);
diff.Indices = ApplyIndexAutoReplacements(diff, tab, modelIndices[tab]);
var diffPk = diff.Columns.TryGetC(tab.PrimaryKey.Name);
if (diffPk != null && tab.PrimaryKey.Identity != diffPk.Identity)
{
if (tab.Name.Equals(diff.Name))
{
var tempName = new ObjectName(diff.Name.Schema, diff.Name.Name + "_old");
preRenames.Add(diff.Name, tempName);
copyDataFrom.Add(tab.Name, tempName);
if (replacements.Interactive)
{
SafeConsole.WriteLineColor(ConsoleColor.Yellow, $@"Column {diffPk.Name} in {diff.Name} is now Identity={tab.PrimaryKey.Identity}.");
Console.WriteLine($@"Changing a Primary Key is not supported by SQL Server so the script will...:
1. Rename {diff.Name} table to {tempName}
2. Create a new table {diff.Name}
3. Copy data from {tempName} to {tab.Name}.
4. Drop {tempName}
");
}
}
else
{
copyDataFrom.Add(tab.Name, diff.Name);
if (replacements.Interactive)
{
SafeConsole.WriteLineColor(ConsoleColor.Yellow, $@"Column {diffPk.Name} in {diff.Name} is now Identity={tab.PrimaryKey.Identity}.");
Console.WriteLine($@"Changing a Primary Key is not supported by SQL Server so the script will...:
1. Create a new table {tab.Name}
2. Copy data from {diff.Name} to {tab.Name}.
3. Drop {diff.Name}
");
}
}
}
});
var columnsByFKTarget = database.Values.SelectMany(a => a.Columns.Values).Where(a => a.ForeignKey != null).GroupToDictionary(a => a.ForeignKey.TargetTable);
foreach (var pr in preRenames)
{
var diff = database[pr.Key.ToString()];
diff.Name = pr.Value;
foreach (var col in columnsByFKTarget.TryGetC(pr.Key).EmptyIfNull())
{
col.ForeignKey.TargetTable = pr.Value;
}
database.Add(pr.Value.ToString(), diff);
database.Remove(pr.Key.ToString());
}
Func <ObjectName, ObjectName> ChangeName = (ObjectName objectName) =>
{
string name = replacements.Apply(Replacements.KeyTables, objectName.ToString());
return(model.TryGetC(name)?.Name ?? objectName);
};
Func <ObjectName, SqlPreCommand> DeleteAllForeignKey = tableName =>
{
var dropFks = (from t in database.Values
from c in t.Columns.Values
where c.ForeignKey != null && c.ForeignKey.TargetTable.Equals(tableName)
select SqlBuilder.AlterTableDropConstraint(t.Name, c.ForeignKey.Name)).Combine(Spacing.Simple);
if (dropFks == null)
{
return(null);
}
return(SqlPreCommand.Combine(Spacing.Simple, new SqlPreCommandSimple("---In order to remove the PK of " + tableName.Name), dropFks));
};
using (replacements.WithReplacedDatabaseName())
{
SqlPreCommand preRenameTables = preRenames.Select(a => SqlBuilder.RenameTable(a.Key, a.Value.Name)).Combine(Spacing.Double);
if (preRenameTables != null)
{
preRenameTables.GoAfter = true;
}
SqlPreCommand createSchemas = Synchronizer.SynchronizeScriptReplacing(replacements, "Schemas",
modelSchemas.ToDictionary(a => a.ToString()),
databaseSchemas.ToDictionary(a => a.ToString()),
(_, newSN) => SqlBuilder.CreateSchema(newSN),
null,
(_, newSN, oldSN) => newSN.Equals(oldSN) ? null : SqlBuilder.CreateSchema(newSN),
Spacing.Double);
//use database without replacements to just remove indexes
SqlPreCommand dropStatistics =
Synchronizer.SynchronizeScript(model, database,
null,
(tn, dif) => SqlBuilder.DropStatistics(tn, dif.Stats),
(tn, tab, dif) =>
{
var removedColums = dif.Columns.Keys.Except(tab.Columns.Keys).ToHashSet();
return(SqlBuilder.DropStatistics(tn, dif.Stats.Where(a => a.Columns.Any(removedColums.Contains)).ToList()));
},
Spacing.Double);
SqlPreCommand dropIndices =
Synchronizer.SynchronizeScript(model, database,
null,
(tn, dif) => dif.Indices.Values.Where(ix => !ix.IsPrimary).Select(ix => SqlBuilder.DropIndex(dif.Name, ix)).Combine(Spacing.Simple),
(tn, tab, dif) =>
{
Dictionary <string, Index> modelIxs = modelIndices[tab];
var removedColums = dif.Columns.Keys.Except(tab.Columns.Keys).ToHashSet();
var changes = Synchronizer.SynchronizeScript(modelIxs, dif.Indices,
null,
(i, dix) => dix.Columns.Any(removedColums.Contains) || dix.IsControlledIndex ? SqlBuilder.DropIndex(dif.Name, dix) : null,
(i, mix, dix) => !dix.IndexEquals(dif, mix) ? SqlPreCommand.Combine(Spacing.Double, dix.IsPrimary ? DeleteAllForeignKey(dif.Name) : null, SqlBuilder.DropIndex(dif.Name, dix)) : null,
Spacing.Simple);
return(changes);
},
Spacing.Double);
SqlPreCommand dropForeignKeys = Synchronizer.SynchronizeScript(
model,
database,
null,
(tn, dif) => dif.Columns.Values.Select(c => c.ForeignKey != null ? SqlBuilder.AlterTableDropConstraint(dif.Name, c.ForeignKey.Name) : null)
.Concat(dif.MultiForeignKeys.Select(fk => SqlBuilder.AlterTableDropConstraint(dif.Name, fk.Name))).Combine(Spacing.Simple),
(tn, tab, dif) => SqlPreCommand.Combine(Spacing.Simple,
Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
null,
(cn, colDb) => colDb.ForeignKey != null ? SqlBuilder.AlterTableDropConstraint(dif.Name, colDb.ForeignKey.Name) : null,
(cn, colModel, colDb) => colDb.ForeignKey == null ? null :
colModel.ReferenceTable == null || colModel.AvoidForeignKey || !colModel.ReferenceTable.Name.Equals(ChangeName(colDb.ForeignKey.TargetTable)) ?
SqlBuilder.AlterTableDropConstraint(dif.Name, colDb.ForeignKey.Name) :
null, Spacing.Simple),
dif.MultiForeignKeys.Select(fk => SqlBuilder.AlterTableDropConstraint(dif.Name, fk.Name)).Combine(Spacing.Simple)),
Spacing.Double);
SqlPreCommand preRenamePks = preRenames.Select(a => SqlBuilder.DropPrimaryKeyConstraint(a.Value)).Combine(Spacing.Double);
SqlPreCommand tables =
Synchronizer.SynchronizeScript(
model,
database,
(tn, tab) => SqlPreCommand.Combine(Spacing.Double,
SqlBuilder.CreateTableSql(tab),
copyDataFrom.ContainsKey(tab.Name) ? CopyData(tab, database.GetOrThrow(copyDataFrom.GetOrThrow(tab.Name).ToString()), replacements).Do(a => a.GoBefore = true) : null
),
(tn, dif) => SqlBuilder.DropTable(dif.Name),
(tn, tab, dif) =>
SqlPreCommand.Combine(Spacing.Simple,
!object.Equals(dif.Name, tab.Name) ? SqlBuilder.RenameOrMove(dif, tab) : null,
Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
(cn, tabCol) => SqlPreCommand.Combine(Spacing.Simple,
tabCol.PrimaryKey && dif.PrimaryKeyName != null ? SqlBuilder.DropPrimaryKeyConstraint(tab.Name) : null,
AlterTableAddColumnDefault(tab, tabCol, replacements)),
(cn, difCol) => SqlPreCommand.Combine(Spacing.Simple,
difCol.Default != null ? SqlBuilder.DropDefaultConstraint(tab.Name, difCol.Name) : null,
SqlBuilder.AlterTableDropColumn(tab, cn)),
(cn, tabCol, difCol) => SqlPreCommand.Combine(Spacing.Simple,
difCol.Name == tabCol.Name ? null : SqlBuilder.RenameColumn(tab, difCol.Name, tabCol.Name),
difCol.ColumnEquals(tabCol, ignorePrimaryKey: true) ? null : SqlPreCommand.Combine(Spacing.Simple,
tabCol.PrimaryKey && !difCol.PrimaryKey && dif.PrimaryKeyName != null ? SqlBuilder.DropPrimaryKeyConstraint(tab.Name) : null,
SqlBuilder.AlterTableAlterColumn(tab, tabCol),
tabCol.SqlDbType == SqlDbType.NVarChar && difCol.SqlDbType == SqlDbType.NChar ? SqlBuilder.UpdateTrim(tab, tabCol) : null),
difCol.DefaultEquals(tabCol) ? null : SqlPreCommand.Combine(Spacing.Simple,
difCol.Default != null ? SqlBuilder.DropDefaultConstraint(tab.Name, tabCol.Name) : null,
tabCol.Default != null ? SqlBuilder.AddDefaultConstraint(tab.Name, tabCol.Name, tabCol.Default, tabCol.SqlDbType) : null),
UpdateByFkChange(tn, difCol, tabCol, ChangeName, copyDataFrom)),
Spacing.Simple)),
Spacing.Double);
if (tables != null)
{
tables.GoAfter = true;
}
var tableReplacements = replacements.TryGetC(Replacements.KeyTables);
if (tableReplacements != null)
{
replacements[Replacements.KeyTablesInverse] = tableReplacements.Inverse();
}
SqlPreCommand syncEnums;
try
{
syncEnums = SynchronizeEnumsScript(replacements);
}
catch (Exception e)
{
syncEnums = new SqlPreCommandSimple("-- Exception synchronizing enums: " + e.Message);
}
SqlPreCommand addForeingKeys = Synchronizer.SynchronizeScript(
model,
database,
(tn, tab) => SqlBuilder.AlterTableForeignKeys(tab),
null,
(tn, tab, dif) => Synchronizer.SynchronizeScript(
tab.Columns,
dif.Columns,
(cn, colModel) => colModel.ReferenceTable == null || colModel.AvoidForeignKey ? null :
SqlBuilder.AlterTableAddConstraintForeignKey(tab, colModel.Name, colModel.ReferenceTable),
null,
(cn, colModel, coldb) =>
{
if (colModel.ReferenceTable == null || colModel.AvoidForeignKey)
{
return(null);
}
if (coldb.ForeignKey == null || !colModel.ReferenceTable.Name.Equals(ChangeName(coldb.ForeignKey.TargetTable)))
{
return(SqlBuilder.AlterTableAddConstraintForeignKey(tab, colModel.Name, colModel.ReferenceTable));
}
var name = SqlBuilder.ForeignKeyName(tab.Name.Name, colModel.Name);
return(SqlPreCommand.Combine(Spacing.Simple,
name != coldb.ForeignKey.Name.Name ? SqlBuilder.RenameForeignKey(coldb.ForeignKey.Name, name) : null,
(coldb.ForeignKey.IsDisabled || coldb.ForeignKey.IsNotTrusted) && !replacements.SchemaOnly ? SqlBuilder.EnableForeignKey(tab.Name, name) : null));
},
Spacing.Simple),
Spacing.Double);
bool?createMissingFreeIndexes = null;
SqlPreCommand addIndices =
Synchronizer.SynchronizeScript(model, database,
(tn, tab) => modelIndices[tab].Values.Where(a => !(a is PrimaryClusteredIndex)).Select(SqlBuilder.CreateIndex).Combine(Spacing.Simple),
null,
(tn, tab, dif) =>
{
var columnReplacements = replacements.TryGetC(Replacements.KeyColumnsForTable(tn));
Func <IColumn, bool> isNew = c => !dif.Columns.ContainsKey(columnReplacements?.TryGetC(c.Name) ?? c.Name);
Dictionary <string, Index> modelIxs = modelIndices[tab];
var controlledIndexes = Synchronizer.SynchronizeScript(modelIxs, dif.Indices,
(i, mix) => mix is UniqueIndex || mix.Columns.Any(isNew) || SafeConsole.Ask(ref createMissingFreeIndexes, "Create missing non-unique index {0} in {1}?".FormatWith(mix.IndexName, tab.Name)) ? SqlBuilder.CreateIndex(mix) : null,
null,
(i, mix, dix) => !dix.IndexEquals(dif, mix) ? SqlBuilder.CreateIndex(mix) :
mix.IndexName != dix.IndexName ? SqlBuilder.RenameIndex(tab, dix.IndexName, mix.IndexName) : null,
Spacing.Simple);
return(SqlPreCommand.Combine(Spacing.Simple, controlledIndexes));
}, Spacing.Double);
SqlPreCommand dropSchemas = Synchronizer.SynchronizeScriptReplacing(replacements, "Schemas",
modelSchemas.ToDictionary(a => a.ToString()),
databaseSchemas.ToDictionary(a => a.ToString()),
null,
(_, oldSN) => DropSchema(oldSN) ? SqlBuilder.DropSchema(oldSN) : null,
(_, newSN, oldSN) => newSN.Equals(oldSN) ? null : SqlBuilder.DropSchema(oldSN),
Spacing.Double);
return(SqlPreCommand.Combine(Spacing.Triple, preRenameTables, createSchemas, dropStatistics, dropIndices, dropForeignKeys, preRenamePks, tables, syncEnums, addForeingKeys, addIndices, dropSchemas));
}
}
public static SqlPreCommand RemoveDuplicatesIfNecessary(UniqueIndex uniqueIndex, Replacements rep)
{
try
{
var primaryKey = uniqueIndex.Table.Columns.Values.Where(a => a.PrimaryKey).Only();
if (primaryKey == null)
{
return(null);
}
int count = DuplicateCount(uniqueIndex, rep);
if (count == 0)
{
return(null);
}
var columns = uniqueIndex.Columns.ToString(c => c.Name.SqlEscape(), ", ");
if (SafeConsole.Ask($"There are {count} rows in {uniqueIndex.Table.Name} with the same {columns}. Generate DELETE duplicates script?"))
{
return(new SqlPreCommandSimple($@"DELETE {uniqueIndex.Table.Name}
WHERE {primaryKey.Name} NOT IN
(
SELECT MIN({primaryKey.Name})
FROM {uniqueIndex.Table.Name}
GROUP BY {columns}
)"));
}
return(null);
}
catch (Exception e)
{
return(new SqlPreCommandSimple($"-- Impossible to determine duplicates in new index {uniqueIndex.IndexName}"));
}
}