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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (b BINARY <CUSTOM_COL_OPTIONS>,
b0 BINARY(0) <CUSTOM_COL_OPTIONS>,
b1 BINARY(1) <CUSTOM_COL_OPTIONS>,
b20 BINARY(20) <CUSTOM_COL_OPTIONS>,
b255 BINARY(255) <CUSTOM_COL_OPTIONS>
) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
SHOW COLUMNS IN t1;
Field Type Null Key Default Extra
b binary(1) # # # #
b0 binary(0) # # # #
b1 binary(1) # # # #
b20 binary(20) # # # #
b255 binary(255) # # # #
INSERT INTO t1 VALUES ('','','','','');
INSERT INTO t1 VALUES ('a','','b','abcdefghi klmnopqrst', 'Creating an article for the Knowledgebase is similar to asking questions. First, navigate to the category where you feel the article should be. Once there, double check that an article doesn\'t already exist which would work.');
SELECT HEX(b), HEX(b0), HEX(b1), HEX(b20), HEX(b255) FROM t1;
HEX(b) HEX(b0) HEX(b1) HEX(b20) HEX(b255)
00 00 0000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
61 62 616263646566676869206B6C6D6E6F7071727374 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
INSERT INTO t1 VALUES ('abc', 'a', 'abc', REPEAT('a',21), REPEAT('x',256));
Warnings:
Warning 1265 Data truncated for column 'b' at row 1
Warning 1265 Data truncated for column 'b0' at row 1
Warning 1265 Data truncated for column 'b1' at row 1
Warning 1265 Data truncated for column 'b20' at row 1
Warning 1265 Data truncated for column 'b255' at row 1
INSERT INTO t1 SELECT b255, b255, b255, b255, CONCAT(b255,b255) FROM t1;
Warnings:
Warning 1265 Data truncated for column 'b' at row 1
Warning 1265 Data truncated for column 'b0' at row 1
Warning 1265 Data truncated for column 'b1' at row 1
Warning 1265 Data truncated for column 'b20' at row 1
Warning 1265 Data truncated for column 'b255' at row 1
Warning 1265 Data truncated for column 'b' at row 2
Warning 1265 Data truncated for column 'b0' at row 2
Warning 1265 Data truncated for column 'b1' at row 2
Warning 1265 Data truncated for column 'b20' at row 2
Warning 1265 Data truncated for column 'b255' at row 2
Warning 1265 Data truncated for column 'b' at row 3
Warning 1265 Data truncated for column 'b0' at row 3
Warning 1265 Data truncated for column 'b1' at row 3
Warning 1265 Data truncated for column 'b20' at row 3
Warning 1265 Data truncated for column 'b255' at row 3
SELECT HEX(b), HEX(b0), HEX(b1), HEX(b20), HEX(b255) FROM t1;
HEX(b) HEX(b0) HEX(b1) HEX(b20) HEX(b255)
00 00 0000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00 00 0000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
43 43 4372656174696E6720616E2061727469636C6520 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
61 61 6161616161616161616161616161616161616161 787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878
61 62 616263646566676869206B6C6D6E6F7071727374 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
78 78 7878787878787878787878787878787878787878 787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878787878
ALTER TABLE t1 ADD COLUMN b257 BINARY(257) <CUSTOM_COL_OPTIONS>;
ERROR 42000: Column length too big for column 'b257' (max = 255); use BLOB or TEXT instead
SHOW COLUMNS IN t1;
Field Type Null Key Default Extra
b binary(1) # # # #
b0 binary(0) # # # #
b1 binary(1) # # # #
b20 binary(20) # # # #
b255 binary(255) # # # #
DROP TABLE t1;
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