Advanced recordset and variables problem

Question

Can anyone help!!!
Im trying to build an advanced recordset for a seach query...
Im using CS6, and I want to add 3 variables, now I write my query and  when I press ok on advanced recordset panel, some error pops up telling me they dont exist.
What AM I DOING WRONG!!
this is my query :
SELECT Contrats.Client, Contrats.de, Contrats.a, Contrats.quantite,  Contrats.format, Contrats.etablissement, Etablissements.Nom,  Etablissements.Contact, Etablissements.Adresse, Etablissements.Ville,  Etablissements.telephone, Etablissements.Courriel
FROM Contrats, Etablissements
WHERE Etablissements.Nom=Contrats.etablissement AND etablissement1  AND Contrats.de BETWEEN De1 AND a1  AND Contrats.a BETWEEN De1 AND  a1
My variables are ;
varetablissement1 : type : text  -  Default value : -1 - Run-time value : $_GET('etablissement1')
varDe1 : type : text  -  Default value : -1 - Run-time value : $_GET('De1')
vara1 : type : text  -  Default value : -1 - Run-time value : $_GET('a1')
Also after ok is pressed a new variable appears called totalRows and takes  over data from another variables, and making that data disapear from the original ...
Everything works fine until this part :
AND Contrats.de BETWEEN De1 AND a1  AND Contrats.a BETWEEN De1 AND a1
Thanks for helping, Ive searched far and wide for any answers on this.

Answer 1

Datatype for Etablissements.Nom is text, for Contrats.a and Contrats.de is date. Nom is capitalised for no particular reason, that's how I typed it at the time in php admin.
Table structure for table Etablissements
Column
Type
Null
Default
ID
int(50)
No
Nom
varchar(250)
No
Statut
varchar(250)
No
Contact
varchar(250)
No
Adresse
varchar(250)
No
Secteur
varchar(250)
No
Ville
varchar(250)
No
Province
varchar(250)
No
CodePostal
varchar(250)
No
telephone
varchar(250)
No
Courriel
varchar(250)
No
Ristournes
varchar(250)
No
Montant
varchar(250)
No
Renouvellement
date
No
Circuit
varchar(250)
No
Age
varchar(250)
No
Age2
varchar(250)
No
Pourcent1
varchar(250)
No
Pourcent2
varchar(250)
No
maxexpress1
varchar(250)
Yes
aucun
maxdigital1
varchar(250)
Yes
aucun
megamax1
varchar(250)
Yes
aucun
maxexpress2
varchar(250)
Yes
0
Hommes
varchar(250)
Yes
0
Femmes
varchar(250)
Yes
0
Neutres
varchar(250)
Yes
0
Handicapes
varchar(250)
Yes
0
Maxdigital2
varchar(250)
Yes
0
Megamax2
varchar(250)
Yes
0
MDhommes
varchar(250)
Yes
NULL
MDfemmes
varchar(250)
Yes
NULL
MDneutres
varchar(250)
Yes
NULL
Table structure for table Contrats
Column
Type
Null
Default
Id
int(250)
No
ContratID
varchar(250)
No
Client
varchar(250)
No
de
date
No
a
date
No
quantite
varchar(250)
No
format
varchar(250)
No
rayon
varchar(250)
No
etablissement
varchar(250)
No
Hommes
varchar(250)
Yes
NULL
Femmes
varchar(250)
Yes
NULL
Neutre
varchar(250)
Yes
NULL
Handicape
varchar(250)
Yes
NULL
Notes
varchar(10000)
No
annule
varchar(250)
No
As for the examples of the variables passed in the querystring, do you mean what is passed from my search form?