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4333980a49
for ALTER TABLE, LOAD DATA).
ROW_COUNT is now assigned according to the following rules:
- In my_ok():
- for DML statements: to the number of affected rows;
- for DDL statements: to 0.
- In my_eof(): to -1 to indicate that there was a result set.
We derive this semantics from the JDBC specification, where int
java.sql.Statement.getUpdateCount() is defined to (sic) "return the
current result as an update count; if the result is a ResultSet
object or there are no more results, -1 is returned".
- In my_error(): to -1 to be compatible with the MySQL C API and
MySQL ODBC driver.
- For SIGNAL statements: to 0 per WL#2110 specification. Zero is used
since that's the "default" value of ROW_COUNT in the diagnostics area.
sql/protocol.cc:
Fix a typo.
sql/sql_class.h:
- Introduce THD::get_row_count_func() / THD::set_row_count_func();
- Remove the CF_HAS_ROW_COUNT define
sql/sql_parse.cc:
CF_HAS_ROW_COUNT was eliminated.
79 lines
1.3 KiB
Text
79 lines
1.3 KiB
Text
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# --
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# -- Test case for Bug#21818.
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# --
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(a INT);
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INSERT INTO t1 VALUES (1), (2), (3);
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# -- Check 1.
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SELECT * FROM t1 INTO OUTFILE "MYSQL_TMP_DIR/bug21818.txt";
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affected rows: 3
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SELECT ROW_COUNT();
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ROW_COUNT()
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3
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# -- Check 2.
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SELECT a FROM t1 LIMIT 1 INTO @a;
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affected rows: 1
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SELECT ROW_COUNT();
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ROW_COUNT()
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1
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# -- Check 3.
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DROP DATABASE IF EXISTS mysqltest1;
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CREATE DATABASE mysqltest1;
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affected rows: 1
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SELECT ROW_COUNT();
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ROW_COUNT()
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1
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DROP DATABASE mysqltest1;
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# -- Check 4.
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DELETE FROM t1;
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LOAD DATA INFILE 'MYSQL_TMP_DIR/bug21818.txt' INTO TABLE t1(a);
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affected rows: 3
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info: Records: 3 Deleted: 0 Skipped: 0 Warnings: 0
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SELECT ROW_COUNT();
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ROW_COUNT()
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3
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# -- Check 5.
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ALTER TABLE t1 ADD COLUMN b VARCHAR(255);
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affected rows: 3
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info: Records: 3 Duplicates: 0 Warnings: 0
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SELECT ROW_COUNT();
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ROW_COUNT()
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3
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DROP TABLE t1;
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# -- Check 6.
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DROP TABLE IF EXISTS t2;
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CREATE TABLE t1(a INT);
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CREATE TABLE t2(a INT);
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INSERT INTO t1 VALUES (1), (2), (3);
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INSERT INTO t2 VALUES (ROW_COUNT());
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SELECT * FROM t2;
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a
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3
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DROP TABLE t1;
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DROP TABLE t2;
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# -- Check 7 (check that SQL errors reset row_count to -1).
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CREATE TABLE t1(a INT);
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INSERT INTO t1 VALUES (1), (2), (3);
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SELECT f1();
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ERROR 42000: FUNCTION test.f1 does not exist
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SELECT ROW_COUNT();
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ROW_COUNT()
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-1
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DROP TABLE t1;
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# -- End of test case for Bug#21818.
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