POSTGRESQL STRING FUNCTION CODE
POSTGRESQL STRING FUNCTION ISO

Split_part( string text, delimiter text, field integer) Remove the longest string containing only characters from characters (a space by default) from the end of string. If the string is already longer than length then it is truncated. Rpad( string text, length integer )įill up the string to length length by appending the characters fill (a space by default). Replace all occurrences in string of substring from with substring to. Replace( string text, from text, to text) Repeat string the specified number of times Embedded quotes and backslashes are properly doubled. Return the given string suitably quoted to be used as a string literal in an SQL statement string. Quotes are added only if necessary (i.e., if the string contains non-identifier characters or would be case-folded). Return the given string suitably quoted to be used as an identifier in an SQL statement string. Remove the longest string containing only characters from characters (a space by default) from the start of string.Ĭalculates the MD5 hash of string, returning the result in hexadecimal. If the string is already longer than length then it is truncated (on the right).

Lpad( string text, length integer )įill up the string to length length by prepending the characters fill (a space by default). Words are sequences of alphanumeric characters separated by non-alphanumeric characters. Supported types are: base64, hex, escape.Ĭonvert the first letter of each word to uppercase and the rest to lowercase. Parameter type is same as in encode.Įncode binary data to ASCII-only representation.

POSTGRESQL STRING FUNCTION ISO

Text_in_unicode represented in ISO 8859-1 encodingĭecode binary data from string previously encoded with encode. If src_encoding is omitted, database encoding is assumed.Ĭonvert( 'text_in_unicode', 'UNICODE', 'LATIN1') The original encoding is specified by src_encoding. Remove the longest string consisting only of characters in characters (a space by default) from the start and end of string.Ĭonvert( string text, dest_encoding name)Ĭonvert string to dest_encoding.

POSTGRESQL STRING FUNCTION CODE

Other String Functions FunctionĪSCII code of the first character of the argument Some of them are used internally to implement the SQL-standard string functions listed in Table 9-5. Remove the longest string containing only the characters (a space by default) from the start/end/both ends of the string.Īdditional string manipulation functions are available and are listed in Table 9-6. Substring( string from pattern for escape)Įxtract substring matching SQL regular expression Substring( string )Įxtract substring matching POSIX regular expression Overlay('Txxxxas' placing 'hom' from 2 for 4) Overlay( string placing string from integer ) See Table 9-7 for available conversion names.Ĭonvert('PostgreSQL' using iso_8859_1_to_utf_8) Also there are some pre-defined conversion names. Conversions can be defined by CREATE CONVERSION.

SQL String Functions and Operators FunctionĬhar_length( string) or character_length( string)Ĭhange encoding using specified conversion name.

Postgresql string function