If the result of a string operation on an INFORMATION_SCHEMA column differs from expectations, a workaround is to use an explicit COLLATE clause to force a suitable collation (see Section 1.8.1, “Using COLLATE in SQL Statements”). For example, to perform a case-insensitive search, use COL...
这是mysql的一个遗留问题,mysql中的utf8最多只能支持3bytes长度的字符编码,对于一些需要占据4bytes的文字,mysql的utf8就不支持了,要使用utf8mb4才行。 很多COLLATE都带有_ci字样,这是Case Insensitive的缩写,即大小写无关,也就是说"A"和"a"在排序和比较的时候是一视同仁的。selection * from table1 where fi...
the statement uses default collation for the character set. If this collation is inappropriate for the intended table use (for example, if it would change from a case-sensitive collation to a case-insensitive collation), specify a collation explicitly...
0Table and database names are stored on disk using the lettercase specified in theCREATE TABLEorCREATE DATABASEstatement. Name comparisons are case-sensitive. You shouldnotset this variable to 0 if you are running MySQL on a system that has case-insensitive file names (such as Windows or mac...
and to my surprise the result was, 1 row found. I just can't believe that mysql SQL version is case insensitive in the handling of strings. So what could the reason for this? Thank you in advance for any helpful idea, Xenofon
sock //数据库字符集 utf8 | 数据库校对规则:utf8_general_ci 不区分大小写 mysql> create database weiyigeek DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci; //ci是case insensitive的缩写,意思是大小写不敏感; //相对的是cs,即case sensitive,大小写敏感; //还有一种是utf8_bin,是将字符串中的...
utf8_genera_ci不区分大小写,ci为case insensitive的缩写,即大小写不敏感; utf8_general_cs区分大小写,cs为case sensitive的缩写,即大小写敏感,但是目前MySQL版本中已经不支持类似于***_genera_cs的排序规则,直接使用utf8_bin替代; utf8_bin将字符串中的每一个字符用二进制数据存储,区分大小写。
SHOWCOLLATION[LIKE匹配模式];由于一种字符集可能对应多种比较规则，所以展示的结果会更加多，这里就不细...
It seems that this version of Mysql is case INSENSITIVE on CREATE TABLE tablename and case SENSITIVE on DROP, SELECT etc etc. The error I'm experiencing is because I had in the same DB another "recover" table spelt in capitals, `RECOVERY`. Take a look, now I'm trying to create `...
2024-04-30T17:47:53.432000Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive 2024-04-30T17:47:53.437244Z 0 [ERROR] [MY-010901] [Server] Can't open shared library '/usr/local/mysql/lib/plugin/key...