{"height":"190","published":"2024-09-15 23:59:11","width":"100%","version":"1.0","title":"\u3010Snowflake\u3011Snowflake \uff5e NULL\u306e\u6271\u3044 \uff5e","url":"https://dk521123.hatenablog.com/entry/2024/09/15/235911","blog_title":"\u30d7\u30ed\u30b0\u30e9\u30e0 \u306e\u8d85\u500b\u4eba\u7684\u306a\u30e1\u30e2","categories":["Snowflake"],"type":"rich","author_name":"dk521123","author_url":"https://blog.hatena.ne.jp/dk521123/","description":"\u25a0 \u306f\u3058\u3081\u306b \u5c0f\u30cd\u30bf\u3002 Snowflake \u306e NULL \u306e\u6271\u3044\u306b\u3064\u3044\u3066\u3001\u30e1\u30e2\u3063\u3066\u304a\u304f \u76ee\u6b21 \u3010\uff11\u3011IFNULL \u3010\uff12\u3011NULLIF \u3010\uff13\u3011NULLIFZERO \u3010\uff14\u3011EQUAL_NULL \u3010\uff15\u3011IS_NULL_VALUE \u3010\uff16\u3011COALESCE \u3010\uff11\u3011IFNULL -- expr1 \u304c NULL \u306e\u5834\u5408\u306f\u3001 expr2 \u3092\u8fd4\u3059 -- \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f expr1 \u3092\u8fd4\u3059 IFNULL( <expr1> , <expr2> ) https://docs.snowflake.com/ja/sql-reference/functions/ifnull \u3010\uff12\u3011NULLIF -- expr1 \u304c ex\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdk521123.hatenablog.com%2Fentry%2F2024%2F09%2F15%2F235911\" title=\"\u3010Snowflake\u3011Snowflake \uff5e NULL\u306e\u6271\u3044 \uff5e - \u30d7\u30ed\u30b0\u30e9\u30e0 \u306e\u8d85\u500b\u4eba\u7684\u306a\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","blog_url":"https://dk521123.hatenablog.com/","image_url":"https://cdn.image.st-hatena.com/image/square/adad63b72f1d6545b2ba2538c3fc2923b2fd5989/backend=imagemagick;height=80;version=1;width=80/https%3A%2F%2Fcdn.blog.st-hatena.com%2Fimages%2Fcircle%2Fofficial-circle-icon%2Fcomputers.gif","provider_name":"Hatena Blog"}