public override SqlProvider FormatMin(LambdaExpression minExpression)
{
var selectSql = ResolveExpression.ResolveMin(minExpression);
var fromTableSql = FormatTableName();
var whereSql = ResolveExpression.ResolveWhereList();
string noneSql = "";
var joinSql = ResolveExpression.ResolveJoinSql(JoinList, ref noneSql);
SqlString = $"{selectSql} {fromTableSql}{joinSql} {whereSql} ";
return(this);
}
public override SqlProvider FormatSum(LambdaExpression sumExpression)
{
var selectSql = ResolveExpression.ResolveSum(sumExpression);
var fromTableSql = FormatTableName();
var nolockSql = ResolveExpression.ResolveWithNoLock(Context.Set.NoLock);
var whereSql = ResolveExpression.ResolveWhereList();
string noneSql = "";
var joinSql = ResolveExpression.ResolveJoinSql(JoinList, ref noneSql);
SqlString = $"{selectSql} {fromTableSql} {nolockSql} {joinSql} {whereSql} ";
return(this);
}
public override SqlProvider FormatCount()
{
var selectSql = "SELECT COUNT(1)";
var fromTableSql = FormatTableName();
var nolockSql = ResolveExpression.ResolveWithNoLock(Context.Set.NoLock);
var whereSql = ResolveExpression.ResolveWhereList();
string noneSql = "";
var joinSql = ResolveExpression.ResolveJoinSql(JoinList, ref noneSql);
var groupSql = ResolveExpression.ResolveGroupBy();
var havingSql = ResolveExpression.ResolveHaving();
if (!Context.Set.IsDistinct)
{
if (string.IsNullOrEmpty(groupSql))
{
SqlString = $"{selectSql} {fromTableSql} {nolockSql} {joinSql} {whereSql}";
}
else
{
selectSql = ResolveExpression.ResolveSelect(null);
SqlString = $"SELECT COUNT(*) FROM( {selectSql} {fromTableSql} {nolockSql} {joinSql} {whereSql} {groupSql} {havingSql} )T";
}
}
else
{
//字段解析字符
string countBySql = ResolveExpression.ResolveSelect(null);
SqlString = $@"SELECT COUNT(*) FROM(
{countBySql} {fromTableSql} {nolockSql}
{joinSql}
{whereSql}
)T";
}
return(this);
}
public override SqlProvider FormatGet <T>()
{
var selectSql = ResolveExpression.ResolveSelect(1);
var fromTableSql = FormatTableName();
var nolockSql = ResolveExpression.ResolveWithNoLock(Context.Set.NoLock);
var whereSql = ResolveExpression.ResolveWhereList();
var joinSql = ResolveExpression.ResolveJoinSql(JoinList, ref selectSql);
var groupSql = ResolveExpression.ResolveGroupBy();
var havingSql = ResolveExpression.ResolveHaving();
var orderbySql = ResolveExpression.ResolveOrderBy();
SqlString = $"{selectSql} {fromTableSql} {nolockSql} {joinSql} {whereSql} {groupSql} {havingSql} {orderbySql}";
return(this);
}
public override SqlProvider FormatToPageList <T>(int pageIndex, int pageSize)
{
var orderbySql = ResolveExpression.ResolveOrderBy();
var selectSql = ResolveExpression.ResolveSelect(null);
var fromTableSql = FormatTableName();
var whereSql = ResolveExpression.ResolveWhereList();
var joinSql = ResolveExpression.ResolveJoinSql(JoinList, ref selectSql);
var groupSql = ResolveExpression.ResolveGroupBy();
var havingSql = ResolveExpression.ResolveHaving();
SqlString = $@" {selectSql}
{fromTableSql} {joinSql} {whereSql} {groupSql} {havingSql} {orderbySql}
LIMIT {((pageIndex - 1) * pageSize)},{pageSize};";
return(this);
}
