85 lines
2.3 KiB
SQL
85 lines
2.3 KiB
SQL
-- 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, result_types FROM pg_prepared_statements;
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PREPARE q1 AS SELECT 1 AS a;
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EXECUTE q1;
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SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements;
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-- should fail
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PREPARE q1 AS SELECT 2;
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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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PREPARE q2 AS SELECT 2 AS b;
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SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements;
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-- sql92 syntax
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DEALLOCATE PREPARE q1;
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SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements;
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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, result_types FROM pg_prepared_statements;
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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('postgres');
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PREPARE q3(text, int, float, boolean, 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 odd = $5::int)
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ORDER BY unique1;
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EXECUTE q3('AAAAxx', 5::smallint, 10.5::float, false, 4::bigint);
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-- too few params
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EXECUTE q3('bool');
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-- too many params
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EXECUTE q3('bytea', 5::smallint, 10.5::float, false, 4::bigint, true);
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-- wrong param types
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EXECUTE q3(5::smallint, 10.5::float, false, 4::bigint, 'bytea');
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-- invalid type
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PREPARE q4(nonexistenttype) AS SELECT $1;
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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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ORDER BY unique1;
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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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CREATE TEMPORARY TABLE q5_prep_nodata AS EXECUTE q5(200, 'DTAAAA')
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WITH NO DATA;
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SELECT * FROM q5_prep_nodata;
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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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-- DML statements
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PREPARE q8 AS
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UPDATE tenk1 SET stringu1 = $2 WHERE unique1 = $1;
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SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements
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ORDER BY name;
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-- test DEALLOCATE ALL;
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DEALLOCATE ALL;
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SELECT name, statement, parameter_types FROM pg_prepared_statements
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ORDER BY name;
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