If we wish to remove the ‘New York’ record from the table, we can run a query as shown: select first_name, last_name, replace(state, 'New York', '') as state from users; The above query should remove the string ‘New York’ from the table. The resulting set is as shown: Not...
Copy 其中,character_expression是要进行替换的字符串,start是替换的起始位置,length是要替换的字符数,replaceWith_expression是替换后的字符串。 下面是一个示例,假设我们仍然要删除名字字符串中的第一个字符,如果第一个字符是“t”: SELECTSTUFF(name,1,1,'')FROMstudentsWHERELEFT(name,1)=...
问题原因:Hologres不支持使用SELECT INTO语法。 解决方法:您可使用INSERT INTO SELECT方式插入数据,详情请参见INSERT。 报错:ALTER TABLE CHANGE OWNER is not supported in SLPM (Schema-Level Permission Mode) 问题原因:不支持在SLPM模型下使用ALTER TABLE的方式改变表Owner。
语法2: substr(string A, int start, int len),substring(string A, int start, int len) 返回值: string 说明:返回字符串A从start位置开始,长度为len的字符串 select t1.*,substr(t1.phone,1,3) as area_number from temp as t1 idnameemailphonearea_number 1 John Doe john.doe@example.com 123...
上述 {column type} 的可能替换项为: CHAR [({size} )] |CHARACTER [( {size} )] |LONGCHAR |SHORT |INT |INTEGER |LONG |对象 [NOT NULL] [TEMPORARY] [LOCALIZABLE] [HOLD]。 保留和释放临时表 ALTER TABLE {table name} HOLDALTER TABLE {table name} FREE 用户可以使用命令 HOLD 和 FREE 来...
1.SELECT：用于从数据库表中检索数据。2.INSERT：用于向数据库表中插入新的数据。3.UPDATE：用于更新...
NOT_ALLOWED_IN_FROM、NOT_ALLOWED_IN_PIPE_OPERATOR_WHERE、NOT_A_CONSTANT_STRING、NOT_UNRESOLVED_ENCODER、PARSE_MODE_UNSUPPORTED、PARSE_SYNTAX_ERROR、PROCEDURE_CREATION_PARAMETER_OUT_INOUT_WITH_DEFAULT、REF_DEFAULT_VALUE_IS_NOT_ALLOWED_IN_PARTITION、SORT_BY_WITHOUT_BUCKETING、SPECIFY_BUCKETING_IS_NOT_...
SELECT CHAR (65) || CHAR (110) || CHAR (116) "character" FROM DUMMY; 1. character Ant 1. 2. CONCAT CONCAT (str1, str2) 返回位于 str1 后的 str2 联合组成的字符串。级联操作符(||)与该函数作用相同。 SELECT CONCAT ('C', 'at') "concat" FROM DUMMY; ...
· 错误:1300 SQLSTATE: HY000 (ER_INVALID_CHARACTER_STRING) 消息:无效的%s字符串: '%s' · 错误:1301 SQLSTATE: HY000 (ER_WARN_ALLOWED_PACKET_OVERFLOWED) 消息:%s()的结果大于max_allowed_packet (%ld),已截短 · 错误:1302 SQLSTATE: HY000 (ER_CONFLICTING_DECLARATIONS) ...
The following example shows how to return only a part of a character string from a given start position. Since thelengthargument isn't provided, the length defaults to return the remaining characters in the string. SQL SELECTSUBSTRING('123abc',4)ASy; ...