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c01999a557
If the second output column value is 'a\nb', the 'b' should appear in the second display column, rather than the first column as it does now. Change libpq's PQdsplen() to return more useful values. > Note: this changes the PQdsplen function, it can now return zero or > minus one which was not possible before. It doesn't appear anyone is > actually using the functions other than psql but it is a change. The > functions are not actually documentated anywhere so it's not like we're > breaking a defined interface. The new semantics follow the Unicode > standard. BACKWARD COMPATIBLE CHANGE. The only user-visible change I saw in the regression tests is that a SELECT * on a table where all the columns have been dropped doesn't return a blank line like before. This seems like a step forward. Martijn van Oosterhout
167 lines
12 KiB
Plaintext
167 lines
12 KiB
Plaintext
-- Regression tests for prepareable statements. We query the content
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-- of the pg_prepared_statements view as prepared statements are
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-- created and removed.
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SELECT name, statement, parameter_types FROM pg_prepared_statements;
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name | statement | parameter_types
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------+-----------+-----------------
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(0 rows)
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PREPARE q1 AS SELECT 1 AS a;
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EXECUTE q1;
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a
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---
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1
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(1 row)
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SELECT name, statement, parameter_types FROM pg_prepared_statements;
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name | statement | parameter_types
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------+------------------------------+-----------------
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q1 | PREPARE q1 AS SELECT 1 AS a; | {}
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(1 row)
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-- should fail
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PREPARE q1 AS SELECT 2;
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ERROR: prepared statement "q1" already exists
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-- should succeed
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DEALLOCATE q1;
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PREPARE q1 AS SELECT 2;
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EXECUTE q1;
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?column?
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----------
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2
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(1 row)
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PREPARE q2 AS SELECT 2 AS b;
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SELECT name, statement, parameter_types FROM pg_prepared_statements;
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name | statement | parameter_types
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------+------------------------------+-----------------
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q1 | PREPARE q1 AS SELECT 2; | {}
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q2 | PREPARE q2 AS SELECT 2 AS b; | {}
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(2 rows)
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-- sql92 syntax
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DEALLOCATE PREPARE q1;
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SELECT name, statement, parameter_types FROM pg_prepared_statements;
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name | statement | parameter_types
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------+------------------------------+-----------------
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q2 | PREPARE q2 AS SELECT 2 AS b; | {}
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(1 row)
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DEALLOCATE PREPARE q2;
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-- the view should return the empty set again
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SELECT name, statement, parameter_types FROM pg_prepared_statements;
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name | statement | parameter_types
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------+-----------+-----------------
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(0 rows)
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-- parameterized queries
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PREPARE q2(text) AS
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SELECT datname, datistemplate, datallowconn
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FROM pg_database WHERE datname = $1;
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EXECUTE q2('regression');
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datname | datistemplate | datallowconn
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------------+---------------+--------------
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regression | f | t
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(1 row)
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PREPARE q3(text, int, float, boolean, oid, smallint) AS
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SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR
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ten = $3::bigint OR true = $4 OR oid = $5 OR odd = $6::int);
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EXECUTE q3('AAAAxx', 5::smallint, 10.5::float, false, 500::oid, 4::bigint);
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unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
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---------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
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4502 | 412 | 0 | 2 | 2 | 2 | 2 | 502 | 502 | 4502 | 4502 | 4 | 5 | ERAAAA | WPAAAA | AAAAxx
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102 | 612 | 0 | 2 | 2 | 2 | 2 | 102 | 102 | 102 | 102 | 4 | 5 | YDAAAA | OXAAAA | AAAAxx
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7602 | 1040 | 0 | 2 | 2 | 2 | 2 | 602 | 1602 | 2602 | 7602 | 4 | 5 | KGAAAA | AOBAAA | AAAAxx
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902 | 1104 | 0 | 2 | 2 | 2 | 2 | 902 | 902 | 902 | 902 | 4 | 5 | SIAAAA | MQBAAA | AAAAxx
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4902 | 1600 | 0 | 2 | 2 | 2 | 2 | 902 | 902 | 4902 | 4902 | 4 | 5 | OGAAAA | OJCAAA | AAAAxx
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9502 | 1812 | 0 | 2 | 2 | 2 | 2 | 502 | 1502 | 4502 | 9502 | 4 | 5 | MBAAAA | SRCAAA | AAAAxx
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4702 | 2520 | 0 | 2 | 2 | 2 | 2 | 702 | 702 | 4702 | 4702 | 4 | 5 | WYAAAA | YSDAAA | AAAAxx
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1002 | 2580 | 0 | 2 | 2 | 2 | 2 | 2 | 1002 | 1002 | 1002 | 4 | 5 | OMAAAA | GVDAAA | AAAAxx
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2 | 2716 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 5 | CAAAAA | MAEAAA | AAAAxx
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802 | 2908 | 0 | 2 | 2 | 2 | 2 | 802 | 802 | 802 | 802 | 4 | 5 | WEAAAA | WHEAAA | AAAAxx
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6402 | 3808 | 0 | 2 | 2 | 2 | 2 | 402 | 402 | 1402 | 6402 | 4 | 5 | GMAAAA | MQFAAA | AAAAxx
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8602 | 5440 | 0 | 2 | 2 | 2 | 2 | 602 | 602 | 3602 | 8602 | 4 | 5 | WSAAAA | GBIAAA | AAAAxx
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8402 | 5708 | 0 | 2 | 2 | 2 | 2 | 402 | 402 | 3402 | 8402 | 4 | 5 | ELAAAA | OLIAAA | AAAAxx
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2102 | 6184 | 0 | 2 | 2 | 2 | 2 | 102 | 102 | 2102 | 2102 | 4 | 5 | WCAAAA | WDJAAA | AAAAxx
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4202 | 6628 | 0 | 2 | 2 | 2 | 2 | 202 | 202 | 4202 | 4202 | 4 | 5 | QFAAAA | YUJAAA | AAAAxx
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2902 | 6816 | 0 | 2 | 2 | 2 | 2 | 902 | 902 | 2902 | 2902 | 4 | 5 | QHAAAA | ECKAAA | AAAAxx
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2302 | 7112 | 0 | 2 | 2 | 2 | 2 | 302 | 302 | 2302 | 2302 | 4 | 5 | OKAAAA | ONKAAA | AAAAxx
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3202 | 7128 | 0 | 2 | 2 | 2 | 2 | 202 | 1202 | 3202 | 3202 | 4 | 5 | ETAAAA | EOKAAA | AAAAxx
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7802 | 7508 | 0 | 2 | 2 | 2 | 2 | 802 | 1802 | 2802 | 7802 | 4 | 5 | COAAAA | UCLAAA | AAAAxx
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4102 | 7676 | 0 | 2 | 2 | 2 | 2 | 102 | 102 | 4102 | 4102 | 4 | 5 | UBAAAA | GJLAAA | AAAAxx
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8302 | 7800 | 0 | 2 | 2 | 2 | 2 | 302 | 302 | 3302 | 8302 | 4 | 5 | IHAAAA | AOLAAA | AAAAxx
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1702 | 7940 | 0 | 2 | 2 | 2 | 2 | 702 | 1702 | 1702 | 1702 | 4 | 5 | MNAAAA | KTLAAA | AAAAxx
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2202 | 8028 | 0 | 2 | 2 | 2 | 2 | 202 | 202 | 2202 | 2202 | 4 | 5 | SGAAAA | UWLAAA | AAAAxx
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1602 | 8148 | 0 | 2 | 2 | 2 | 2 | 602 | 1602 | 1602 | 1602 | 4 | 5 | QJAAAA | KBMAAA | AAAAxx
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5602 | 8796 | 0 | 2 | 2 | 2 | 2 | 602 | 1602 | 602 | 5602 | 4 | 5 | MHAAAA | IANAAA | AAAAxx
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6002 | 8932 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 1002 | 6002 | 4 | 5 | WWAAAA | OFNAAA | AAAAxx
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3902 | 9224 | 0 | 2 | 2 | 2 | 2 | 902 | 1902 | 3902 | 3902 | 4 | 5 | CUAAAA | UQNAAA | AAAAxx
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9602 | 9972 | 0 | 2 | 2 | 2 | 2 | 602 | 1602 | 4602 | 9602 | 4 | 5 | IFAAAA | OTOAAA | AAAAxx
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8002 | 9980 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 3002 | 8002 | 4 | 5 | UVAAAA | WTOAAA | AAAAxx
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(29 rows)
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-- too few params
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EXECUTE q3('bool');
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ERROR: wrong number of parameters for prepared statement "q3"
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DETAIL: Expected 6 parameters but got 1.
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-- too many params
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EXECUTE q3('bytea', 5::smallint, 10.5::float, false, 500::oid, 4::bigint, true);
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ERROR: wrong number of parameters for prepared statement "q3"
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DETAIL: Expected 6 parameters but got 7.
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-- wrong param types
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EXECUTE q3(5::smallint, 10.5::float, false, 500::oid, 4::bigint, 'bytea');
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ERROR: parameter $3 of type boolean cannot be coerced to the expected type double precision
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HINT: You will need to rewrite or cast the expression.
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-- invalid type
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PREPARE q4(nonexistenttype) AS SELECT $1;
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ERROR: type "nonexistenttype" does not exist
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-- create table as execute
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PREPARE q5(int, text) AS
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SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2;
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CREATE TEMPORARY TABLE q5_prep_results AS EXECUTE q5(200, 'DTAAAA');
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SELECT * FROM q5_prep_results;
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unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
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---------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
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2525 | 64 | 1 | 1 | 5 | 5 | 25 | 525 | 525 | 2525 | 2525 | 50 | 51 | DTAAAA | MCAAAA | AAAAxx
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7257 | 1895 | 1 | 1 | 7 | 17 | 57 | 257 | 1257 | 2257 | 7257 | 114 | 115 | DTAAAA | XUCAAA | VVVVxx
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9961 | 2058 | 1 | 1 | 1 | 1 | 61 | 961 | 1961 | 4961 | 9961 | 122 | 123 | DTAAAA | EBDAAA | OOOOxx
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3877 | 4060 | 1 | 1 | 7 | 17 | 77 | 877 | 1877 | 3877 | 3877 | 154 | 155 | DTAAAA | EAGAAA | AAAAxx
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4553 | 4113 | 1 | 1 | 3 | 13 | 53 | 553 | 553 | 4553 | 4553 | 106 | 107 | DTAAAA | FCGAAA | HHHHxx
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7933 | 4514 | 1 | 1 | 3 | 13 | 33 | 933 | 1933 | 2933 | 7933 | 66 | 67 | DTAAAA | QRGAAA | OOOOxx
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6581 | 4686 | 1 | 1 | 1 | 1 | 81 | 581 | 581 | 1581 | 6581 | 162 | 163 | DTAAAA | GYGAAA | OOOOxx
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8609 | 5918 | 1 | 1 | 9 | 9 | 9 | 609 | 609 | 3609 | 8609 | 18 | 19 | DTAAAA | QTIAAA | OOOOxx
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5229 | 6407 | 1 | 1 | 9 | 9 | 29 | 229 | 1229 | 229 | 5229 | 58 | 59 | DTAAAA | LMJAAA | VVVVxx
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1173 | 6699 | 1 | 1 | 3 | 13 | 73 | 173 | 1173 | 1173 | 1173 | 146 | 147 | DTAAAA | RXJAAA | VVVVxx
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3201 | 7309 | 1 | 1 | 1 | 1 | 1 | 201 | 1201 | 3201 | 3201 | 2 | 3 | DTAAAA | DVKAAA | HHHHxx
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1849 | 8143 | 1 | 1 | 9 | 9 | 49 | 849 | 1849 | 1849 | 1849 | 98 | 99 | DTAAAA | FBMAAA | VVVVxx
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9285 | 8469 | 1 | 1 | 5 | 5 | 85 | 285 | 1285 | 4285 | 9285 | 170 | 171 | DTAAAA | TNMAAA | HHHHxx
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497 | 9092 | 1 | 1 | 7 | 17 | 97 | 497 | 497 | 497 | 497 | 194 | 195 | DTAAAA | SLNAAA | AAAAxx
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200 | 9441 | 0 | 0 | 0 | 0 | 0 | 200 | 200 | 200 | 200 | 0 | 1 | SHAAAA | DZNAAA | HHHHxx
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5905 | 9537 | 1 | 1 | 5 | 5 | 5 | 905 | 1905 | 905 | 5905 | 10 | 11 | DTAAAA | VCOAAA | HHHHxx
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(16 rows)
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-- unknown or unspecified parameter types: should succeed
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PREPARE q6 AS
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SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2;
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PREPARE q7(unknown) AS
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SELECT * FROM road WHERE thepath = $1;
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SELECT name, statement, parameter_types FROM pg_prepared_statements
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ORDER BY name;
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name | statement | parameter_types
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------+------------------------------------------------------------------+--------------------------------------------------------
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q2 | PREPARE q2(text) AS | {text}
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: \x09SELECT datname, datistemplate, datallowconn
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: \x09FROM pg_database WHERE datname = $1;
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q3 | PREPARE q3(text, int, float, boolean, oid, smallint) AS | {text,integer,"double precision",boolean,oid,smallint}
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: \x09SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR
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: \x09ten = $3::bigint OR true = $4 OR oid = $5 OR odd = $6::int);
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q5 | PREPARE q5(int, text) AS | {integer,text}
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: \x09SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2;
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q6 | PREPARE q6 AS | {integer,name}
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: SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2;
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q7 | PREPARE q7(unknown) AS | {path}
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: SELECT * FROM road WHERE thepath = $1;
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(5 rows)
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