How to generate select statement based on inner join using csharp ?

[engahmedbarbary]

I need to get fields and keys and table to generate inner join select statement as below :


select FooterTable.LineNumber,FooterTable.ItemCode,FooterTable.Quantity,FooterTable.UniPrice,FooterTable.Total from

MasterTable inner join FooterTable on MasterTable.Serial=FooterTable.Serial,MasterTable.BranchCode=FooterTable.BranchCode,MasterTable.Year=FooterTable.Year

where MasterTable.Serial=10 AND MasterTable.Year=2019 AND MasterTable.BranchCode=1


What i try to get result above by csharp as following :


public string GetSelectStatement(string JsonDataForSelect)
{
var root = (JObject)JsonConvert.DeserializeObject(JsonDataForSelect);
var query = "";
var items = root.SelectToken("Details").Children().OfType<JProperty>().ToDictionary(p => p.Name, p => p.Value);
foreach (var item in items)
{
if (item.Key == "table")
{
var tableName = item.Value;
query = string.Format("select from table {0} inner join table{1} where", tableName);
}
else if (item.Key == "keys")
{
var key = item.Value.SelectToken("").OfType<JProperty>().ToDictionary(p => p.Name, p => p.Value);
var count = 0;
foreach (var id in key)
{
count++;
if (count == key.Count())
{
query += string.Format("{0} = {1}", id.Key, id.Value);
}
else
{
query += string.Format("{0} = {1} and ", id.Key, id.Value);
}
}

}
}
return query;
}


I need to modify code above to generate select statement as above

to simple syntax i need to make


select FooterTable.fields from MasterTable inner join FooterTable on MasterTable.key1=FooterTable.key1 and MasterTable.key2=FooterTable.key2 and MasterTable.key3=FooterTable.key3 where key1 =value and key2=value and key3=value


How to do that please by modify code above

Continue reading...