From 21db5295284b04e0130d85d8ade9559498cf0ea5 Mon Sep 17 00:00:00 2001
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 <11785178+wmm1004lsp@user.noreply.gitee.com>
Date: Tue, 24 Oct 2023 03:59:49 +0000
Subject: [PATCH] =?UTF-8?q?52=20=E7=8E=8B=E5=8F=91=E6=A7=90?=
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Signed-off-by: 王发槐 <11785178+wmm1004lsp@user.noreply.gitee.com>
---
 .../2023-10-23.md"                                  | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 "52 \347\216\213\345\217\221\346\247\220/2023-10-23.md"

diff --git "a/52 \347\216\213\345\217\221\346\247\220/2023-10-23.md" "b/52 \347\216\213\345\217\221\346\247\220/2023-10-23.md"
new file mode 100644
index 0000000..06be9f3
--- /dev/null
+++ "b/52 \347\216\213\345\217\221\346\247\220/2023-10-23.md"	
@@ -0,0 +1,13 @@
+~~~sql
+笔记
+substring_index(str,'分界字符',n)  -- 返回从字符串str截取到第n个分界符的字符串，当n大于1从左到右，小于1从右到左
+curdate()  -- 返回当前日期
+curtime()  -- 返回当前时间
+now()  -- 返回当前时间日期
+year(date)  -- 获取指定date的年份
+month(date)  -- 获取指定date的月份
+day(date)  -- 获取指定date的日期
+```
+
+~~~
+
-- 
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