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b8da37b3ad
pg_input_error_info() is now a SQL function able to return a row with more than just the error message generated for incorrect data type inputs when these are able to handle soft failures, returning more contents of ErrorData, as of: - The error message (same as before). - The error detail, if set. - The error hint, if set. - SQL error code. All the regression tests that relied on pg_input_error_message() are updated to reflect the effects of the rename. Per discussion with Tom Lane and Andrew Dunstan. Author: Nathan Bossart Discussion: https://postgr.es/m/139a68e1-bd1f-a9a7-b5fe-0be9845c6311@dunslane.net
200 lines
2.8 KiB
Plaintext
200 lines
2.8 KiB
Plaintext
--
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-- CHAR
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--
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-- Per SQL standard, CHAR means character(1), that is a varlena type
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-- with a constraint restricting it to one character (not byte)
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SELECT char 'c' = char 'c' AS true;
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true
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------
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t
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(1 row)
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--
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-- Build a table for testing
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-- (This temporarily hides the table created in test_setup.sql)
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--
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CREATE TEMP TABLE CHAR_TBL(f1 char);
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INSERT INTO CHAR_TBL (f1) VALUES ('a');
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INSERT INTO CHAR_TBL (f1) VALUES ('A');
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-- any of the following three input formats are acceptable
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INSERT INTO CHAR_TBL (f1) VALUES ('1');
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INSERT INTO CHAR_TBL (f1) VALUES (2);
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INSERT INTO CHAR_TBL (f1) VALUES ('3');
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-- zero-length char
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INSERT INTO CHAR_TBL (f1) VALUES ('');
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-- try char's of greater than 1 length
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INSERT INTO CHAR_TBL (f1) VALUES ('cd');
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ERROR: value too long for type character(1)
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INSERT INTO CHAR_TBL (f1) VALUES ('c ');
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SELECT * FROM CHAR_TBL;
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f1
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----
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a
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A
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1
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2
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3
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c
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(7 rows)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 <> 'a';
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f1
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----
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A
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1
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2
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3
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c
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(6 rows)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 = 'a';
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f1
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----
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a
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(1 row)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 < 'a';
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f1
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----
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(1 row)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 <= 'a';
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f1
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----
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a
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(2 rows)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 > 'a';
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f1
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----
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A
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1
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2
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3
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c
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(5 rows)
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SELECT c.*
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FROM CHAR_TBL c
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WHERE c.f1 >= 'a';
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f1
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----
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a
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A
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1
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2
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3
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c
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(6 rows)
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DROP TABLE CHAR_TBL;
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--
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-- Now test longer arrays of char
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--
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-- This char_tbl was already created and filled in test_setup.sql.
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-- Here we just try to insert bad values.
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--
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INSERT INTO CHAR_TBL (f1) VALUES ('abcde');
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ERROR: value too long for type character(4)
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SELECT * FROM CHAR_TBL;
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f1
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------
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a
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ab
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abcd
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abcd
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(4 rows)
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-- Also try it with non-error-throwing API
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SELECT pg_input_is_valid('abcd ', 'char(4)');
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pg_input_is_valid
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-------------------
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t
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(1 row)
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SELECT pg_input_is_valid('abcde', 'char(4)');
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pg_input_is_valid
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-------------------
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f
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(1 row)
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SELECT * FROM pg_input_error_info('abcde', 'char(4)');
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message | detail | hint | sql_error_code
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--------------------------------------+--------+------+----------------
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value too long for type character(4) | | | 22001
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(1 row)
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--
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-- Also test "char", which is an ad-hoc one-byte type. It can only
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-- really store ASCII characters, but we allow high-bit-set characters
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-- to be accessed via bytea-like escapes.
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--
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SELECT 'a'::"char";
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char
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------
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a
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(1 row)
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SELECT '\101'::"char";
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char
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------
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A
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(1 row)
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SELECT '\377'::"char";
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char
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------
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\377
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(1 row)
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SELECT 'a'::"char"::text;
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text
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------
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a
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(1 row)
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SELECT '\377'::"char"::text;
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text
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------
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\377
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(1 row)
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SELECT '\000'::"char"::text;
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text
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------
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(1 row)
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SELECT 'a'::text::"char";
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char
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------
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a
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(1 row)
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SELECT '\377'::text::"char";
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char
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------
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\377
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(1 row)
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SELECT ''::text::"char";
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char
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------
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(1 row)
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