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en:dbopen

DBOpen (Statement)

Format

dbopen file_name
dbopen ( file_name )
dbopen database_number , file_name
dbopen ( database_number , file_name )

Description

Open an SQLite database file. If the file does not exist then create it. Up to eight database connections can be made at a time in a program. If the database number is not specified then connection 0 will be used.

Example

#database foo - create a database, populate a table, open a recordset and read data from table.

# create a new database file or open it
dbopen "dbtest.sqlite3"

# delete old foo table - trap error if new database
onerror errortrap
dbexecute "drop table foo;"
offerror
# create and populate
dbexecute "create table foo (id integer, words text, value decimal);"
dbexecute "insert into foo values (1,'one',3.14);"
dbexecute "insert into foo values (2,'two',6.28);"
dbexecute "insert into foo values (3,'three',9.43);"

# open a recordset and loop through the rows of data
dbopenset "select * from foo order by words;"
while dbrow()
	print dbint(0) + dbstring(1) + dbfloat(2)
end while
dbcloseset

# wrap everything up
dbclose
end

errortrap:
# accept error - display nothing - return to next statement
return

will display

1one3.14
3three9.43
2two6.28

See Also

More information about databases in general and SQLite specifically can be found at SQLite Home Page and SQL at Wikipedia.

History

0.9.6yNew to Version
0.9.9.19Added ability to have 8 database connections
en/dbopen.txt · Last modified: 2016/08/12 20:26 by admin