流程函數(shù)
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
IF(value,t ,f) | 如果value是真,返回t,否則返回f |
IFNULL(value1, value2) | 如果value1不為空,返回value1,否則返回value2 |
CASEWHEN 條件1 THEN result1WHEN 條件2 THEN result2….[ELSE resultn]END | 相當(dāng)于Java的if…else if… |
CASE exprWHEN 常量值1 THEN 值1WHEN 常量值1 THEN 值1….[ELSE 值n]END | 相當(dāng)于Java的switch |
SELECt ename ,CASEWHEN salary>=15000 THEN ‘高薪’WHEN salary>=10000 THEN ‘潛力股’WHEN salary>=8000 THEN ‘屌絲’ELSE ‘草根’ENDFROM t_employee; | |
SELECt oid,`status`, CASE `status`WHEN 1 THEN ‘未付款’WHEN 2 THEN ‘已付款’WHEN 3 THEN ‘已發(fā)貨’WHEN 4 THEN ‘確認(rèn)收貨’ELSE ‘無(wú)效訂單’ENDFROM t_order; |
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