1.int装string select CAST (1234 AS text) selectto_char(1234,’999‘) 2.string转int selectcast('999'as NUMERIC) --5 附: PostgreSQL 类型转换函数
1.int装string select CAST (1234 AS text) selectto_char(1234,’999‘) 2.string转int selectcast('999'as NUMERIC) --5 附: PostgreSQL 类型转换函数
convert('PostgreSQL' using iso_8859_1_to_utf8) 22、9;PostgreSQL'lower(string)text把字串转化为小写lower('TOM')tomoctet_length(string)int字串中的字节数octet_length('jose')4overlay(string placing string from int for int)text替换子字串overlay('Txxxxas' placing 'hom' from 2 for 4)Thomas...
函数:convert(string bytea, src_encoding name, dest_encoding name)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 ...
convert(string using conversion_name) text 使用指定的转换名字改变编码。 convert(‘PostgreSQL’ using iso_8859_1_to_utf8) ‘PostgreSQL’ lower(string) text 把字串转化为小写 lower(‘TOM’) tom octet_length(string) int 字串中的字节数
convert(string using conversion_name)text使⽤指定的转换名字改变编码。convert('PostgreSQL' using iso_8859_1_to_utf8)'PostgreSQL'lower(string)text把字串转化为⼩写lower('TOM')tom octet_length(string)int字串中的字节数octet_length('jose')4 overlay(string placing string from int [for int])text...
Example #1: How to Use CAST Operator to Convert a String into an Integer/Number? Execute the below statement to cast a string value “5000” into an int data type: SELECTCAST('5000'ASINTEGER); The output shows that the given string has been successfully converted into an integer data type...
to_char(interval, text)text 把时间间隔转为字串 to_char(interval '15h 2m 12s', 'HH24:MI:SS')to_char(int, text)text 把整数转换成字串 to_char(125, '999')to_char(double precision, text)text 把实数/双精度数转换成字串 to_char(125.8::real, '999D9')to_char(numeric, text)text 把...
convert(string using conversion_name) text 使用指定的转换名字改变编码。 convert('PostgreSQL' using iso_8859_1_to_utf8) 'PostgreSQL' lower(string) text 把字串转化为小写 lower('TOM') tom octet_length(string) int 字串中的字节数 octet_length('jose') 4 overlay(string placing string from int ...
Given that PostgreSQL doesn't support it in text values, there's no good way to get it to remove it. You could import your data into bytea and later convert it to text using a special function (in perl or something, maybe?), but it's likely going to be easier to do that in pre...