The PostgreSQL lpad function is used to fill up a string of specific length by a substring. If the substring length is equal to the remaining main string length, it will fill up properly, but if less, the substring will repeat until it is not filling up, if longer than the remaining le...
数值类型的操作符 9.3. Mathematical Functions and Operators 字符串处理 9.4. String Functions and Operators 比特相关 9.6. Bit String Functions and Operators 通配符(规则表达式) 9.7. Pattern Matching 日期类型函数 格式化函数:9.8. Data Type Formatting Functions 操作函数:9.9. Date/Time Functions and Operator...
LTRIM, RTRIM and TRIM LTRIM, RTRIM and TRIM STR TO_CHAR REVERSE REVERSE REPLICATE LPAD REPLACE REPLACE STRING_SPLIT regexp_split_to_array or regexp_split_to_table STRING_AGG CONCAT_WS For more information, see String Functions and Operators in ...
\copy ... perform SQL COPY with data stream to the client host \echo[STRING]writestringto standard output \i FILE execute commands fromfile\o [FILE] send all query results tofileor |pipe \qecho [STRING]writestringto query output stream (see \o) Informational (options: S= show system o...
mylib_sources = files( 'mylib.c', ) if host_system == 'windows' intarray_sources += rc_lib_gen.process(win32ver_rc, extra_args: [ '--NAME', '_int', '--FILEDESC', 'intarray - functions and operators for arrays of integers',]) endif mylib = shared_module('mylib', mylib...
This section discusses the JSON utility functions for getting types of JSONB values and formats JSON values into a human-readable format. jsonb_typeof() –Return the type of top-level JSON value as a text string. jsonb_pretty() –Format a JSON value into human-readable, indented format,...
PostgreSQL 的 Table 相关笔记 字段类型 数值类型 金额类型 numeric, int, 和 bigint 类型可以转为 money. 从 real 和 double precision 则需要先转为 numeric first, 例如 SELECT'12.34'::float8::numeric::money; money 可以无损转换为 numeric, 转换为其他类型则会有精度损失, 例如 ...
Aggregate functions STRING_AGG() ARRAY_AGG() EVERY() XML_AGG() CORR() COVAR_POP() COVAR_SAMP() REGR_AVGX(), REGR_AVGY() REGR_COUNT() REGR_INTERCEPT() REGR_R2() REGR_SLOPE() REGR_SXX(), REGR_SXY(), REGR_SYY() Array functions and operators ...
41.PostgreSQL – DATE/TIME Functionsand Operators (158) 42.PostgreSQL – Functions (166 43.PostgreSQL – Useful Functions(168) PostgreSQL – COUNT Function () PostgreSQL – MAX Function (169 PostgreSQL – MIN Function (171 PostgreSQL – AVG Function (172 PostgreSQL – SUM Function (...
split_part()函数支持负数下标,参考PostgreSQL: Documentation: 14: 9.4. String Functions and Operators 新增string_to_table()函数,将字符串拆分并转换为表,参考PostgreSQL: Documentation: 14: 9.4. String Functions and Operators substring()函数新增语法 SUBSTRING(text SIMILAR pattern ESCAPE escapechar) ...