函数:convert_from(string bytea, src_encoding name) 说明:Convert string to the database encoding. The original encoding is specified by src_encoding. The string must be valid in this encoding. 转换字符串编码,自己要指定源编码,目标编码默认为数据库指定编码, 例子:convert_from('text_in_utf8', '...
函数:convert_from(string bytea, src_encoding name)说明:Convert string to the database encoding. The original encoding is specified by src_encoding. The string must be valid in this encoding. 转换字符串编码,自己要指定源编码,目标编码默认为数据库指定编码, 例子:select convert_from('\316\322\312...
使用un_lz4解压缩,然后convert_from转换成文本 # select convert_from(un_lz4(lz4('aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,你好,我好,大家好!'::bytea)), 'utf8'); convert_from --- aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,你好,我好,大家好! (1 row) 1. 2. 3. 4. 5. lz4_utf8函数和un_lz4_utf8函数用于在u...
2019年7月21日postgresql字符串转时间戳,转换失败时返回nullcreate or replace function convert_datetime(date_str text) returns timestamp language plpgsql ...CSDN编程社区 ...zone - obgnahs的博客 - CSDN博客 - pg 字符串转timestamp 2020年9月14日正确sql: create or replace view ...
位图转换整数集合 SELECTrb_to_array(bitmap)FROMt1WHEREid=1; 位图转换整数 支持以下两种方式将位图转换为整数。 SELECTunnest(rb_to_array('{1,2,3}'::roaringbitmap)); SELECTrb_iterate('{1,2,3}'::roaringbitmap); 操作列表 功能函数列表 聚合函数列表...
-g | --grant_object type : Extract privilege from the given object type. See possible values with GRANT_OBJECT configuration. -i | --input file : File containing Oracle PL/SQL code to convert with no Oracle database connection initiated. -j | --jobs num : Number of parallel process to...
Convert a bitmap to an integer array SELECTrb_to_array(bitmap)FROMt1WHEREid=1; Convert a bitmap to a set of integers SELECTunnest(rb_to_array('{1,2,3}'::roaringbitmap)); Or SELECTrb_iterate('{1,2,3}'::roaringbitmap);
Convert roaringbitmap to integer array ``rb_to_array(roaringbitmap('{1,2,3}'))`` {1,2,3} rb_iterate roaringbitmap SET of integer Return set of integer from a roaringbitmap data. ``SELECT rb_iterate(rb_build('{1,2,3}'))`` 1 2 3 聚合函数列表 聚合函数名 输入 输出 描述 示例...
ST_GEOMETRYTYPE_FUNCTION Oracle function to use to extract the geometry type from a ST_Geometry column Default: ST_GEOMETRYTYPE, for example it should be set to sde.st_geometrytype for ArcSDE. ST_ASBINARY_FUNCTION Oracle function to used to convert an ST_Geometry value into WKB format. ...
# By default Ora2Pg will convert call to SYS_GUID() Oracle function # with a call to uuid_generate_v4() from uuid-ossp extension. You can # redefined it to use the gen_random_uuid() function from pgcrypto # extension by changing the function name below....