в 13:46, 26 мая 2010

2010-05-26T13:46:16Z

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2010-05-26T10:22:30Z

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== Verify that the cursor variable contains information with cursor_status("variable", "@Report")==



<source lang="sql">
22> IF cursor_status("variable", "@Report") != 1
5> CREATE TABLE authors(
6> au_id varchar(11),
7> au_lname varchar(40) NOT NULL,
8> au_fname varchar(20) NOT NULL,
9> phone char(12) NOT NULL DEFAULT ("UNKNOWN"),
10> address varchar(40) NULL,
11> city varchar(20) NULL,
12> state char(2) NULL,
13> zip char(5) NULL,
14> contract bit NOT NULL
15> )
16> GO
1> insert authors values("1", "Joe", "Abra", "111 111-1111", "6 St.", "Berkeley", "CA", "11111", 1)
2> insert authors values("2", "Jack", "Majo", "222 222-2222", "3 St.", "Oakland" , "CA", "22222", 1)
3> insert authors values("3", "Pink", "Cherry", "333 333-3333", "5 Ln.", "Vancouver", "BC", "33333", 1)
4> insert authors values("4", "Blue", "Albert", "444 444-4444", "7 Av.", "Vancouver", "BC", "44444", 1)
5> insert authors values("5", "Red", "Anne", "555 555-5555", "6 Av.", "Regina", "SK", "55555", 1)
6> insert authors values("6", "Black", "Michel", "666 666-6666", "3 Pl.", "Regina", "SK", "66666", 1)
7> insert authors values("7", "White", "Sylvia", "777 777-7777", "1 Pl.", "Rockville", "MD", "77777", 1)
8> insert authors values("8", "Yellow","Heather","888 888-8888", "3 Pu", "Vacaville", "CA", "88888", 0)
9> insert authors values("9", "Gold", "Dep", "999 999-9999", "5 Av.", "Oakland", "CA", "99999", 0)
10> insert authors values("10", "Siler", "Dean", "000 000-0000", "4 Av.", "Oakland", "CA", "00000", 1)
11> GO
1>
2>
3> DECLARE authors_cursor CURSOR KEYSET FOR
4> SELECT au_lname
5> FROM authors
6> WHERE au_lname LIKE "S%"
7>
8> OPEN authors_cursor
9>
10>
11>
12> DECLARE @Report CURSOR
13>
14>
15> EXEC master.dbo.sp_describe_cursor
16> @cursor_return = @Report OUTPUT,
17> @cursor_source = "global",
18> @cursor_identity = "authors_cursor"
19>
20>
21>
22> IF cursor_status("variable", "@Report") != 1
23> PRINT "No information available from the cursor"
24>
25> ELSE BEGIN
26>
27> WHILE (@@fetch_status = 0)
28> BEGIN
29> FETCH NEXT FROM @Report
30> END
31> END
32>
33>
34> IF cursor_status("variable", "@Report") >= -1
35> BEGIN
36> CLOSE @Report
37> DEALLOCATE @Report
38> END
39> GO
1>
2>
3> CLOSE authors_cursor
4> DEALLOCATE authors_cursor
5> GO
1>
2> drop table authors;
3> GO</source>

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SQL Server/T-SQL Tutorial/Cursor/cursor status - История изменений

в 13:46, 26 мая 2010

Admin: 1 версия