Keith Medcalf wrote: > If you do not provide as AS clause to give a result column a name, then > each implementation is free to provide whatever names it feels like (so > sayeth the standard).
The SQL-92 standard actually says: | 6.4 <column reference> | | <column reference> ::= [ <qualifier> <period> ] <column name> | | 7.9 <query specification> | | <query specification> ::= | SELECT [ <set quantifier> ] <select list> <table expression> | | <select list> ::= | <asterisk> | | <select sublist> [ { <comma> <select sublist> }... ] | | <select sublist> ::= | <derived column> | | <qualifier> <period> <asterisk> | | <derived column> ::= <value expression> [ <as clause> ] | | <as clause> ::= [ AS ] <column name> | | Syntax Rules | | 9) Case: | | a) If the i-th <derived column> in the <select list> specifies | an <as clause> that contains a <column name> C, then the | <column name> of the i-th column of the result is C. | | b) If the i-th <derived column> in the <select list> does not | specify an <as clause> and the <value expression> of that | <derived column> is a single <column reference>, then the | <column name> of the i-th column of the result is C. | | c) Otherwise, the <column name> of the i-th column of the <query | specification> is implementation-dependent and different | from the <column name> of any column, other than itself, of | a table referenced by any <table reference> contained in the | SQL-statement. SQLite's default short_column_names setting implements rule b). Regards, Clemens _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users