binary data ("byte array") character varying varchar character varying [ (n) ] varchar [ (n) ] variable-length character string:变长字符串(长度有限制) varchar character char character [ (n) ] char [ (n) ] fixed-length character string:定长字符串 char cidr ipv4 or ipv6...
| type_function_name attrs opt_type_modifiers { $$ = makeTypeNameFromNameList(lcons(makeString($1), $2)); $$->typmods = $3; $$->location = @1; } /* Type/function identifier --- names that can be type or function names. */ type_function_name: IDENT { $$ = $1; } | unre...
在PostgreSQL中,变量是用于存储和操作数据的命名对象。它们可以存储各种数据类型,如整数、浮点数、字符串等,并且可以在SQL语句中使用。 PostgreSQL中的变量可以通过以下方式声明和使用...
PostgreSQL - Data Type Numeric Types Monetary Types Character Types Date/Time Types Boolean Type Enumerated Type Geomertic Type Network Address Type Bit String Type UUID Type XML Type JSON Type Numeric Types NameStorage SizeDescriptionRange smallint2 bytessmall-range integer-32768 to +32767 ...
String createTableFirstLine=String.format("CREATE TABLE %s (",tableFullyQualifiedName); 组装sql:主键列 这里涉及数据类型转换,如mysql中的bigint,在pg中,使用bigserial即可: 代码语言:javascript 复制 String dataType=primaryKeyColumnDefinition.getColDataType().getDataType();if(Objects.equals("bigint",data...
pg_catalog | convert | text | text, name, name | normal | no sql | stable | xxx | internal | pg_convert2 | convert string with specified encoding names (2 rows) 9.x postgres=# \df+ convert List of functions Schema | Name | Result data type | Argument data types | Type | Volat...
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_error 22027 trim_error 22024 unterminated_...
2200G 最相关类型不匹配(MOST SPECIFIC TYPE MISMATCH) 22004 不允许NULL值(NULL VALUE NOT ALLOWED) 22002 NULL值不能做指示器参数(NULL VALUE NO INDICATOR PARAMETER) 22003 数字值超出范围(NUMERIC VALUE OUT OF RANGE) 22026 字串数据长度不匹配(STRING DATA LENGTH MISMATCH) 22001 字串数据右边被截断(STRING...
TYPE t_com_temp IS TABLE OF type_t_com_temp; t_com_data t_com_temp; 1. 2. 3. 4. 5. 6. 7. 8. 6.rpad函数从右边对字符串使用指定的字符进行填充 语法格式如下rpad(string,padded_length,[pad_string]) 例如: rpad('tech', 7); 将返回'tech ' ...