Main   Products   Offshore Outsourcing   Customers   Partners   ContactUs  
JDBC Databases
  HXTT Access 7.1.243
  Buy Now
  HXTT Cobol 5.0.242
  HXTT DBF 7.1.243
  HXTT Excel 6.1.246
  HXTT Json 1.0.214
  HXTT Paradox 7.1.242
  HXTT PDF 2.0.242
  HXTT Text(CSV) 7.1.242
  HXTT Word 1.1.242
  HXTT XML 4.0.243
Offshore Outsourcing
Free Resources
  Firewall Tunneling
  Search Indexing Robot
  Conditional Compilation
  Password Recovery for MS Access
  Password Recovery for Corel Paradox
  Checksum Tool for MD5
  Character Set Converter
  Pyramid - Poker of ZYH
Heng Xing Tian Tai Lab of Xi'an City (abbr, HXTT)

Create index on multiple columns
Philippe Gervaise
2016-10-25 23:46:02

Can you show how to create an index for several columns ?

For example we got a table pcontrat and we wan't an unique index on 2 columns : cont_empl and cont_contrat. With Access it's OK, but we don't know how to do it with HXTT. We try :

CREATE INDEX IF NOT EXISTS PrimaryKey, PrimaryKey ON pcontrat (cont_empl UNIQUE PRIMARY KEY ASC, cont_contrat ASC)

But it creates two differents indexes ... How to create a composed index ?

Thank you.
Re:Create index on multiple columns
HXTT Support
2016-10-26 07:30:33
For instance,
CREATE INDEX XlistJdbc_fid_felement ON test (id , date);
CREATE INDEX XlistJdbc_fid_felement ON test ((id , date) PRIMARY KEY) ;
CREATE INDEX XlistJdbc_fid_felement ON test (id+ date PRIMARY KEY) ;

Search Key   Search by Last 50 Questions


Copyright © 2003-2019 Heng Xing Tian Tai Lab of Xi'an City. | All Rights Reserved. | Privacy | Legal | Sitemap