SELECT SUBSTR('1223_1',0,INSTR('1223_1','_', 1, 1)-1) "INSTRING",
INSTR('1223_1','_', 1, 1) FROM DUAL
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SELECT SUBSTR('1223_1',0,INSTR('1223_1','_', 1, 1)-1) "INSTRING",
INSTR('1223_1','_', 1, 1) FROM DUAL
相关文章: