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Merge mysql.com:/usr/home/bar/mysql-4.1.b23451v2
into mysql.com:/usr/home/bar/mysql-5.0.b23451
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@ -658,3 +658,73 @@ GROUP_CONCAT(a) x
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2 1,2
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1 2,3
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DROP TABLE t1;
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set names utf8;
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create table t1
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(
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x text character set utf8 not null,
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y integer not null
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);
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insert into t1 values (repeat('a', 1022), 0), (repeat(_utf8 0xc3b7, 4), 0);
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set group_concat_max_len= 1022 + 10;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1032 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7
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set group_concat_max_len= 1022 + 9;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1031 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7
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set group_concat_max_len= 1022 + 8;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1030 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7
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set group_concat_max_len= 1022 + 7;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1029 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7
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set group_concat_max_len= 1022 + 6;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1028 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7
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set group_concat_max_len= 1022 + 5;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1027 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7
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set group_concat_max_len= 1022 + 4;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1026 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7
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set group_concat_max_len= 1022 + 3;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1025 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7
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set group_concat_max_len= 1022 + 2;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1024 1023 1023 aaaaaaaaaaa, 61616161612C
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set group_concat_max_len= 1022 + 1;
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select @x:=group_concat(x) from t1 group by y;
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select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
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@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
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1023 1023 1023 aaaaaaaaaaa, 61616161612C
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drop table t1;
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set group_concat_max_len=1024;
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set names latin1;
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create table t1 (f1 int unsigned, f2 varchar(255));
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insert into t1 values (1,repeat('a',255)),(2,repeat('b',255));
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select f2,group_concat(f1) from t1 group by f2;
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def test t1 t1 f2 f2 253 255 255 Y 0 0 8
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def group_concat(f1) 252 1024 1 Y 128 0 63
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f2 group_concat(f1)
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 1
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bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2
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drop table t1;
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