SQLite查詢表是否存在

SQLite - 判斷表是否存在

SELECT count(*) FROM sqlite_master WHERE type="table" AND name = "表名";

 

查詢的結果

qlite> 
sqlite> SELECT count(*) FROM sqlite_master WHERE type="table" AND name = "t_food";
+----------+
| count(*) |
+----------+
| 1        |
+----------+
1 row in set

sqlite> 
sqlite> 
sqlite> 
sqlite> 
sqlite> 
sqlite> 
sqlite> 
sqlite> SELECT count(*) FROM sqlite_master WHERE type="table" AND name = "t_food2";
+----------+
| count(*) |
+----------+
| 0        |
+----------+
1 row in set

sqlite> 
sqlite> 

 

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