LOWER function converts a string to lower case. INITCAP function converts only the initial alphabets of a string to upper case. Lower转换为小写 Upper转换为大写 initcap首字母大写,其他小写 SQL>select lower('SQL Function')from dual; LOWER('SQLFU --- sql function SQL>select upper('SQL Function...
TheREPLACEfunction is used to replace every occurrence of a character(s) with a specified character(s). The use of this function is similar to theTRANSLATEfunction; only one specific character or string is replaced within another string. The syntax is REPLACE('VALUE', 'VALUE', [ NULL ] 'V...
CREATE FUNCTION [dbo].[ufn_CountChar] ( @pInput VARCHAR(1000), @pSearchChar CHAR(1) ) RETURNS INT BEGIN RETURN (LEN(@pInput) - LEN(REPLACE(@pInput COLLATE SQL_Latin1_General_Cp1_CS_AS, @pSearchChar COLLATE SQL_Latin1_General_Cp1_CS_AS, ''))) END GO ...
From within a PL/SQL package, you can use the TO_CLOB (character) function to convert RAW, CHAR, VARCHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB values to CLOB or NCLOB values. See Also: Appendix C in Oracle Database Globalization Support Guide for the collation derivation rules, ...
SQL Language Reference Syntax to_nchar_char::= Description of the illustration to_nchar_char.eps Purpose TO_NCHAR(character) converts a character string,CHAR,VARCHAR2,CLOB, orNCLOBvalue to the national character set. The value returned is alwaysNVARCHAR2. This function is equivalent to theTRANSLA...
CREATEFUNCTIONhex_to_dec(in_hex TEXT)RETURNSINTIMMUTABLE STRICTLANGUAGEsqlAS$body$SELECTCAST(CAST(('x'||CAST($1AStext))ASbit(8))ASINT); $body$;createorreplaceFunctionTrimall(v_Str Varchar2)ReturnStringIs--将全角字符转换为半角字符,统一输出格式v_Retval Varchar2(4000) :=''; ...
有可能是传入了一个float数的字符串作为Integer的参数。db2 ? sql420 SQL0420N Invalid character found in a character string argument of the function "<function-name>".Explanation:The function "<function-name>" has a character string argument that contains a character that is not valid...
After the conversion by using the function, the actual queried length of the columnais3bytes. SELECTa=bfromt2;?column?---t(1row)SELECTcast(aastext)asval,lengthb(val)FROMt2;val|lengthb---+---abc|3(1row) Bytes and Characters nmeans...
Microsoft SQL Server 2008 R2 and Microsoft SQL Server 2012 vary as follows: Transact-SQLdoes not support this feature. See the+ (Add)operator[MSDN-Add]for equivalent functionality to the concatenation operator (||) operator in[ISO/IEC9075-2:2011]....
This function provides information about the default client character set. The default character set may be changed with themysql_set_character_set()function. Example This example shows the fields that are available in theMY_CHARSET_INFOstructure: ...