a lot of work on database schema and migration setup, postgres now works, every integration test passes for all database types, only token table left to do

pkg/services/sqlstore/migrator/column.go

@@ -0,0 +1,62 @@
+package migrator
+
+// Notice
+// code based on parts from from https://github.com/go-xorm/core/blob/3e0fa232ab5c90996406c0cd7ae86ad0e5ecf85f/column.go
+
+type Column struct {
+	Name            string
+	Type            string
+	Length          int
+	Length2         int
+	Nullable        bool
+	IsPrimaryKey    bool
+	IsAutoIncrement bool
+	Default         string
+}
+
+func (col *Column) String(d Dialect) string {
+	sql := d.QuoteStr() + col.Name + d.QuoteStr() + " "
+
+	sql += d.SqlType(col) + " "
+
+	if col.IsPrimaryKey {
+		sql += "PRIMARY KEY "
+		if col.IsAutoIncrement {
+			sql += d.AutoIncrStr() + " "
+		}
+	}
+
+	if d.ShowCreateNull() {
+		if col.Nullable {
+			sql += "NULL "
+		} else {
+			sql += "NOT NULL "
+		}
+	}
+
+	if col.Default != "" {
+		sql += "DEFAULT " + col.Default + " "
+	}
+
+	return sql
+}
+
+func (col *Column) StringNoPk(d Dialect) string {
+	sql := d.QuoteStr() + col.Name + d.QuoteStr() + " "
+
+	sql += d.SqlType(col) + " "
+
+	if d.ShowCreateNull() {
+		if col.Nullable {
+			sql += "NULL "
+		} else {
+			sql += "NOT NULL "
+		}
+	}
+
+	if col.Default != "" {
+		sql += "DEFAULT " + col.Default + " "
+	}
+
+	return sql
+}