Thread: sql doubts
Could you help me ? 1- Whats the diference between TSQL and SQL ? 2- What are nested queries ? 3- I've seen people using DISTINCT, but what's ALL used for ? Thanks very much for your attention, Gustavo Henrique Maultasch gustavoh@sysadmin.com.br
On Wed, 7 Jun 2000, Gustavo Henrique wrote: Ad 1) SQL = Structured Query Language :) TSQL is an extention of SQL that includes support for queries against temporal databases. VALID/TRANSACTION TIME and SEQUENCED/NONSEQUENCED queries. If you would like more info on temporal databases try http://www.cs.auc.dk/TimeCenter which also has an on-line temporal database you can query using a java-applet (tiger) http://www.cs.auc.dk/~tigeradm > Could you help me ? > > 1- Whats the diference between TSQL and SQL ? > > 2- What are nested queries ? > > 3- I've seen people using DISTINCT, but what's ALL used for ? > > Thanks very much for your attention, > > > Gustavo Henrique Maultasch > gustavoh@sysadmin.com.br >