在PostgreSQL中,FIND_IN_SET 是一个在MySQL中常用的函数,用于在一个逗号分隔的字符串中查找某个值的位置。然而,PostgreSQL本身并不提供内置的 FIND_IN_SET 函数。不过,我们可以通过自定义函数来实现类似的功能。 1. "pgsql find in set" 的含义及背景 在MySQL中,FIND_IN_SET(str, strlist) 函数用于查找字符...
FIND_IN_SET(): list是常量,则可以直接用IN, 否则要用find_in_set()函数。 也就是这两个sql是查询的效果是相同的: AI检测代码解析 SELECT id,name,list from tb_test WHERE FIND_IN_SET('daodao',list); SELECT * from C_PURCHASINGMASTERDATA where FIND_IN_SET(EKGRP,'C54,C02,C14,C60,C06,C61,...
1. 可以看到此时不能找出所有爱好登山的人,此时需要引入集合查询函数find_in_set(sub,str_list) select * from votes where find_in_set('登山', hobby); 1.
PGCTL="$prefix/bin/pg_ctl" set -e # Only start if we can find the postmaster. test -x $DAEMON || { echo "$DAEMON not found" if [ "$1" = "stop" ] then exit 0 else exit 5 fi } # If we want to tell child processes to adjust their OOM scores, set up the # necessary e...
0.40% 0.00% 0.01% 12 postgres /home/digoal/pgsql9.6/bin/postgres 0x538a11 d [.] AllocSetFree.lto_priv.1187 0.39% 0.00% 0.00% 1 postgres [kernel.kallsyms] 0xffffffff8111e567 k [k] find_get_page 0.39% 0.01% 0.00% 24 postgres [kernel.kallsyms] 0xffffffff8148d1f8 k [k] tcp_sendms...
CREATEORREPLACEFUNCTIONfind_values()RETURNSSETOFmytableAS$$DECLAREcursorCURSORFORSELECT*FROMmytable;row...
Open an issue if you find an bug or unsupported syntax ! 🔗 This parser has been created to implement pg-mem, an in-memory postgres db emulator. 👉 play with it here ⭐ this repo if you like this package, it helps to motivate me :) ...
缺省的时候将使用zlib压缩库。如果你不想使用它,那么你必须给configure声明--without-zlib选项。使用这个选项关闭了在pg_dump和pg_restore里面压缩归档的支持 AI检测代码解析 下载: sudo apt-get install zlib1g-dev sudo wget http:///pub/source/v9.3.4/postgresql-9.3.4.tar.gzsudo tar xvf postgresql-9.3....
The following built-in variables are supported: FOUND SQLSTATE SQLERRM GET DIAGNOSTICS integer_var := ROW_COUNT; FOUND is a special variable of type Boolean. FOUND starts out false within each procedure call. FOUND is set by the following types of statements: SELECT INTO Sets FOUND to true ...
(4) find_in_set()函数(允许在逗号分隔的字符串列表中查找指定字符串的位置) MySQL: SELECT t.dept_id FROM sys_dept t WHERE find_in_set(‘100’, ancestors) PostgreSQL: SELECT t.dept_id FROM sys_dept t WHERE ‘100’ = ANY (string_to_array(ancestors, ‘,’)) ...