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107 lines
2.9 KiB
107 lines
2.9 KiB
5 months ago
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# The function should return NULL if any of its arguments are NULL.
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SELECT LPAD(NULL, 5, 'x') AS result;
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result
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NULL
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SELECT LPAD(NULL, NULL, 'x') AS result;
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result
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NULL
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SELECT LPAD(NULL, NULL, NULL) AS result;
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result
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NULL
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SELECT LPAD('a', NULL, 'x') AS result;
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result
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NULL
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SELECT LPAD('a', NULL, NULL) AS result;
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result
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NULL
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SELECT LPAD('a', 5, NULL) AS result;
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result
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NULL
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SELECT LPAD(NULL, 5, NULL) AS result;
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result
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NULL
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# The function should return an empty string if len is 0.
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SELECT LPAD('a', 0, 'x') AS result;
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result
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SELECT LPAD('a', 0, '') AS result;
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result
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SELECT LPAD('', 0, 'x') AS result;
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result
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SELECT LPAD('', 0, '') AS result;
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result
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# The function should return NULL if len is negative.
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SELECT LPAD('a', -1, 'x');
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LPAD('a', -1, 'x')
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NULL
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# Min signed long long int:
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SELECT LPAD('a', -9223372036854775808, 'x');
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LPAD('a', -9223372036854775808, 'x')
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NULL
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# Min signed long long int - 1
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SELECT LPAD('a', -9223372036854775809, 'x');
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LPAD('a', -9223372036854775809, 'x')
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NULL
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Warnings:
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Warning 1292 Truncated incorrect DECIMAL value: '-9223372036854775809'
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Warning 1292 Truncated incorrect DECIMAL value: '-9223372036854775809'
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# The function should return NULL with a warning if len is larger than
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# max_allowed_packet.
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# Max signed long long int:
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SELECT LPAD('a', 9223372036854775807, 'x');
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LPAD('a', 9223372036854775807, 'x')
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NULL
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Warnings:
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Warning 1301 Result of lpad() was larger than max_allowed_packet (67108864) - truncated
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# Max signed long long int + 1:
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SELECT LPAD('a', 9223372036854775808, 'x');
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LPAD('a', 9223372036854775808, 'x')
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NULL
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Warnings:
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Warning 1301 Result of lpad() was larger than max_allowed_packet (67108864) - truncated
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# Max unsigned long long int:
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SELECT LPAD('a', 18446744073709551615, 'x');
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LPAD('a', 18446744073709551615, 'x')
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NULL
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Warnings:
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Warning 1301 Result of lpad() was larger than max_allowed_packet (67108864) - truncated
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# Max unsigned long long int + 1:
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SELECT LPAD('a', 18446744073709551616, 'x');
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LPAD('a', 18446744073709551616, 'x')
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NULL
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Warnings:
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Warning 1292 Truncated incorrect DECIMAL value: '18446744073709551616'
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Warning 1292 Truncated incorrect DECIMAL value: '18446744073709551616'
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Warning 1301 Result of lpad() was larger than max_allowed_packet (67108864) - truncated
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# The function should return an empty string if padstr is empty.
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SELECT LPAD('a', 5, '') AS result;
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result
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SELECT LPAD('a', 5, '') AS result;
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result
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# The function should do nothing if str is of length len.
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SELECT LPAD('12345', 5, 'x');
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LPAD('12345', 5, 'x')
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12345
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# The function should chop the string if len is shorter than the length
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# of str.
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SELECT LPAD('123456787890', 1, 'x');
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LPAD('123456787890', 1, 'x')
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1
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SELECT LPAD('123456787890', 5, 'x');
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LPAD('123456787890', 5, 'x')
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12345
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# The function should left pad with padstr so that the string is len
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# bytes long if str is shorter than len.
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SELECT LPAD('123', 5, 'x');
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LPAD('123', 5, 'x')
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xx123
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# The function should repeat padstr also if it has mulitplie characters.
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SELECT LPAD('a', 5, 'xy');
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LPAD('a', 5, 'xy')
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xyxya
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