说明:Convert string to dest_encoding. The original encoding is specified by src_encoding. The string must be valid in this encoding. Conversions can be defined by CREATE CONVERSION. Also there are some predefined conversions. See Table 9-7 for available conversions. 转换字符串编码,指定源编码与目...
函数：octet_length(string)说明：Number of bytes in string 计算字符串的字节数 例⼦：octet_length('jose') =4 函数：overlay(string placing string from int[for int])说明：Replace substring替换字符串中任意长度的⼦字串为新字符串 例⼦：overlay('Txxxxas' placing 'hom'from2for4) =4 函数：...
函数:replace(string text, from text, to text)说明:Replace all occurrences in string of substring from with substring to 将字符的某一子串替换成另一子串 例子:('abcdefabcdef', 'cd', 'XX') = abXXefabXXef 函数:rpad(string text, length int [, fill text])说明:Fill up the string to lengt...
说明:Replace all occurrences in string of substring from with substring to 将字符的某一子串替换成另一子串 例子:('abcdefabcdef', 'cd', 'XX') = abXXefabXXef 函数:rpad(string text, length int [, fill text]) 说明:Fill up the string to length length by appending the characters fill (a ...
Returns the string str with all occurrences of the string from_str replaced by the string to_str. REPLACE() performs a case-sensitive match when searching for from_st 复制 testdb=#SELECTREPLACE('www.mysql.com','w','Ww');replace---WwWwWw.mysql.com(1 row) 1. 2. 3. 4. 5. ...
The PostgreSQL replace function is used to replace all occurrences of matching_string in the string with the replace_with string. Example : SELECT replace('test string', 'st', '**'); Output : te** **ring PostgreSQL rpad() function ...
PostgreSQL: Replication: Standby count Number of standby servers. Zabbix agent pgsql.replication.count["{$PG.HOST}","{$PG.PORT}","{$PG.USER}","{$PG.PASSWORD}","{$PG.DATABASE}"] PostgreSQL: Replication: Lag in seconds Replication lag with master, in seconds. Zabbix agent pgsql.replicat...
In the context of full-text search, RUM operator class maps lexeme occurrences to their positions in the document, which speeds up phrase search and result ranking. RUM 基于 GIN,但它们有两个主要区别。首先,RUM 不提供延迟更新,因此除了位图扫描之外,它还支持常规索引扫描并实现排序运算符。其次,RUM ...
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Consider masking the password in logs/debugging output. Example implementation: interface DatabaseConfig { type: DATABASE_TYPE; dialect: string; client: string; name?: string; host?: string; port?: string; user?: string; password?: string; } export const database: DatabaseConfig = { ......