说明:Remove the longest string consisting only of characters in characters (a space by default) from the start and end of string 去除字符串两边的所有指定的字符,可同时指定多个字符 例子:select btrim('pmars','prs'); = "ma" 函数:chr(int) 说明:Character with the given code. For UTF8 the ...
character varying(50) | | not null | | extended | | | last_name | character varying(50) | | not null | | extended | | | date_of_birth | date | | not null | | plain | | | gender | character(1) | | | | extended | | | email | character varying(100) | | not null |...
1、基本类型 1>、CHAR:子类有Character、String、Rowid、Nchar(民族语言字符集); 2>、VARCHAR2:子类有Varchar、String、NVARCHAR2(民族语言字符集); 3>、BINARY_INTEGER(带符号整数,为整数计算优化性能); 4>、NUMBER(p,s):子类有Dec、Double、precision、Integer、Int、Numberic、Real、Small int; 5>、LONG; 6>...
rpad(string text, length int [, fill text]) text 通过填充字符fill(缺省时为空白),把string填充为长度length。如果string已经比length长则将其截断。 rpad('hi', 5, 'xy') hixyx rtrim(string text [, character text]) text 从字串string的结尾删除只包含character(缺省是个空白)的最长的字 rtrim('tri...
CREATE FUNCTION instr(varchar, integer) RETURNS integer AS $$ DECLARE v_string ALIAS FOR $1; index ALIAS FOR $2; BEGIN -- some computations using v_string and index here END; $$ LANGUAGE plpgsql; CREATE FUNCTION concat_selected_fields(in_t sometablename) RETURNS text AS $$ BEGIN RETURN...
2200C invalid_use_of_escape_character 2200G most_specific_type_mismatch 22004 null_value_not_allowed 22002 null_value_no_indicator_parameter 22003 numeric_value_out_of_range 2200H sequence_generator_limit_exceeded 22026 string_data_length_mismatch 22001 string_data_right_truncation 22011 substring_err...
Character This data type consists of strings of characters such as letters or numbers, and it’s used to store text values. Character data types and string types can occur as either a fixed length, known as char, or variable lengths, known as varchar and long varchar. The length that yo...
SELECT table_catalog,table_schema,column_name,ordinal_position,is_nullable,data_type,character_maximum_length,numeric_precision,udt_name FROM information_schema.columns As c WHERE table_name = '表名' 1. 2. 3. –with用法 (1)生成1-5序列 ...
2200C invalid_use_of_escape_character 2200G most_specific_type_mismatch 22004 null_value_not_allowed 22002 null_value_no_indicator_parameter 22003 numeric_value_out_of_range 2200H sequence_generator_limit_exceeded 22026 string_data_length_mismatch 22001 string_data_right_truncation 22011 substring_err...
{"character_not_in_repertoire",ERRCODE_CHARACTER_NOT_IN_REPERTOIRE},{"datetime_field_overflow",ERRCODE_DATETIME_FIELD_OVERFLOW},{"division_by_zero",ERRCODE_DIVISION_BY_ZERO},{"error_in_assignment",ERRCODE_ERROR_IN_ASSIGNMENT},{"escape_character_conflict",ERRCODE_ESCAPE_CHARACTER_CONFLICT},{"...