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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
SQL statementsThis chapter describes the syntax and semantics of SQL statements that are recognized by HCL OneDB™.
ALTER FRAGMENT statementUse the ALTER FRAGMENT statement to change the distribution strategy or the storage location of an existing table or index. This statement is an extension to the ANSI/ISO standard for the SQL language.
DETACH ClauseUse the DETACH clause of the ALTER FRAGMENT ON TABLE statement to detach a table fragment from a storage distribution scheme and place the contents into a new nonfragmented table.
Detach That Results in a Nonfragmented Table

Detach That Results in a Nonfragmented Table

The following example uses the table cur_acct fragmented into two dbspaces, dbsp1 and dbsp2:

ALTER FRAGMENT ON TABLE cur_acct DETACH dbsp2 accounts;

This example detaches dbsp2 from the distribution scheme for cur_acct and places the rows in a new table, accounts. Table accounts now has the same structure (column names, number of columns, data types, and so on) as table cur_acct, but the table accounts does not contain any indexes or constraints from the table cur_acct. Both tables are now nonfragmented. The following example shows a table that contains three fragments:

ALTER FRAGMENT ON TABLE bus_acct DETACH dbsp3 cli_acct;

This statement detaches dbsp3 from the distribution scheme for bus_acct and places the rows in a new table, cli_acct. Table cli_acct now has the same structure (column names, number of columns, data types, and so on) as bus_acct, but the table cli_acct does not contain any indexes or constraints from the table bus_acct. Table cli_acct is a nonfragmented table, but table bus_acct remains fragmented.